401k Plan data: THE MASTEC, INC. 401(K) RETIREMENT PLAN plan

THE MASTEC, INC. 401(K) RETIREMENT PLAN 401k Plan overview

Plan Name	THE MASTEC, INC. 401(K) RETIREMENT PLAN
Plan identification number	002

THE MASTEC, INC. 401(K) RETIREMENT PLAN Benefits

401k Plan Type

Defined Contribution Pension

Plan Features/Benefits

Profit-sharing
ERISA section 404(c) Plan - This plan, or any part of it is intended to meet the conditions of 29 CFR 2550.404c-1.
Total participant-directed account plan - Participants have the opportunity to direct the investment of all the assets allocated to their individual accounts, regardless of whether 29 CFR 2550.404c-1 is intended to be met.
Partial participant-directed account plan - Participants have the opportunity to direct the investment of a portion of the assets allocated to their individual accounts, regardless of whether 29 CFR 2550.404c-1 is intended to be met.
Code section 401(k) feature - A cash or deferred arrangement described in Code section 401(k) that is part of a qualified defined contribution plan that provides for an election by employees to defer part of their compensation or receive these amounts in cash.
Code section 401(m) arrangement - Employee contributions are allocated to separate accounts under the plan or employer contributions are based, in whole or in part, on employee deferrals or contribtions to the plan. Not applicable if plan is 401(k) plan with only QNECs and/or QMACs. Also not applicable if Code section 403(b)(1), 403(b)(7) or 408 arrangements/accounts/annuities.
Total or partial participant-directed account plan - plan uses default investment account for participants who fail to direct assets in their account.
Master plan - A pension plan that is made available by a sponsor for adoption by employers; that is the subject of a favorable opinion letter; and for which a single funding medium (for example, a trust or custodial account) is established for the joint use of all adopting employers.
Plan sponsor(s) is (are) a member(s) of a controlled group (Code sections 414(b), (c), or (m)).
Plan requiring that all or part of employer contributions be invested and held, at least for a limited period, in employer securities.

401k Sponsoring company profile

MASTEC, INC. has sponsored the creation of one or more 401k plans.

Company Name: MASTEC, INC.

Employer identification number (EIN): 650829355

NAIC Classification: 238900

Additional information about MASTEC, INC.

Jurisdiction of Incorporation: Florida Department of State Division of Corporations

Incorporation Date: 1998-04-08

Company Identification Number: P98000032690

Legal Registered Office Address: 1201 HAYS ST

TALLAHASSEE

32301

More information about MASTEC, INC.

Form 5500 Filing Information

Submission information for form 5500 for 401k plan THE MASTEC, INC. 401(K) RETIREMENT PLAN

Plan id# Filing Submission Date Name of Administrator Date Administrator Signed Name of Company Sponsor Date Sponsor Signed
002 2022-01-01
002 2021-01-01
002 2020-01-01
002 2019-01-01
002 2018-01-01
002 2017-01-01 SANDY ORR
002 2016-01-01 SANDY ORR
002 2015-01-01 SANDY ORR SANDY ORR 2016-08-03
002 2014-01-01 SANDY ORR
002 2013-01-01 SANDY ORR
002 2012-01-01 MARIMER RIVERA
002 2011-01-01 THERESA WELCH
002 2010-01-01 THERESA WELCH
002 2009-01-01 BOB CAMPBELL
002 2009-01-01
002 2009-01-01 THERESA WELCH
002 2009-01-01 THERESA WELCH

Plan Statistics for THE MASTEC, INC. 401(K) RETIREMENT PLAN

401k plan membership statisitcs for THE MASTEC, INC. 401(K) RETIREMENT PLAN

Measure Date Value
2022: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2022 401k membership
Total participants, beginning-of-year 2022-01-01 22,530
Total number of active participants reported on line 7a of the Form 5500 2022-01-01 23,873
Number of retired or separated participants receiving benefits 2022-01-01 85
Number of other retired or separated participants entitled to future benefits 2022-01-01 3,743
Total of all active and inactive participants 2022-01-01 27,701
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2022-01-01 36
Total participants 2022-01-01 27,737
Number of participants with account balances 2022-01-01 13,201
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2022-01-01 0
2021: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2021 401k membership
Total participants, beginning-of-year 2021-01-01 19,108
Total number of active participants reported on line 7a of the Form 5500 2021-01-01 19,241
Number of retired or separated participants receiving benefits 2021-01-01 73
Number of other retired or separated participants entitled to future benefits 2021-01-01 3,194
Total of all active and inactive participants 2021-01-01 22,508
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2021-01-01 22
Total participants 2021-01-01 22,530
Number of participants with account balances 2021-01-01 10,522
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2021-01-01 1
2020: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2020 401k membership
Total participants, beginning-of-year 2020-01-01 19,064
Total number of active participants reported on line 7a of the Form 5500 2020-01-01 16,298
Number of retired or separated participants receiving benefits 2020-01-01 230
Number of other retired or separated participants entitled to future benefits 2020-01-01 2,567
Total of all active and inactive participants 2020-01-01 19,095
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2020-01-01 13
Total participants 2020-01-01 19,108
Number of participants with account balances 2020-01-01 9,140
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2020-01-01 6
2019: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2019 401k membership
Total participants, beginning-of-year 2019-01-01 16,583
Total number of active participants reported on line 7a of the Form 5500 2019-01-01 16,684
Number of retired or separated participants receiving benefits 2019-01-01 49
Number of other retired or separated participants entitled to future benefits 2019-01-01 2,323
Total of all active and inactive participants 2019-01-01 19,056
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2019-01-01 8
Total participants 2019-01-01 19,064
Number of participants with account balances 2019-01-01 8,080
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2019-01-01 4
2018: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2018 401k membership
Total participants, beginning-of-year 2018-01-01 16,248
Total number of active participants reported on line 7a of the Form 5500 2018-01-01 14,572
Number of retired or separated participants receiving benefits 2018-01-01 46
Number of other retired or separated participants entitled to future benefits 2018-01-01 1,958
Total of all active and inactive participants 2018-01-01 16,576
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2018-01-01 7
Total participants 2018-01-01 16,583
Number of participants with account balances 2018-01-01 6,897
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2018-01-01 5
2017: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2017 401k membership
Total participants, beginning-of-year 2017-01-01 16,553
Total number of active participants reported on line 7a of the Form 5500 2017-01-01 14,279
Number of retired or separated participants receiving benefits 2017-01-01 48
Number of other retired or separated participants entitled to future benefits 2017-01-01 1,914
Total of all active and inactive participants 2017-01-01 16,241
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2017-01-01 7
Total participants 2017-01-01 16,248
Number of participants with account balances 2017-01-01 6,463
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2017-01-01 18
2016: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2016 401k membership
Total participants, beginning-of-year 2016-01-01 16,271
Total number of active participants reported on line 7a of the Form 5500 2016-01-01 14,914
Number of retired or separated participants receiving benefits 2016-01-01 24
Number of other retired or separated participants entitled to future benefits 2016-01-01 1,615
Total of all active and inactive participants 2016-01-01 16,553
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2016-01-01 3
Total participants 2016-01-01 16,556
Number of participants with account balances 2016-01-01 6,060
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2016-01-01 0
2015: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2015 401k membership
Total participants, beginning-of-year 2015-01-01 15,416
Total number of active participants reported on line 7a of the Form 5500 2015-01-01 14,922
Number of retired or separated participants receiving benefits 2015-01-01 0
Number of other retired or separated participants entitled to future benefits 2015-01-01 1,347
Total of all active and inactive participants 2015-01-01 16,269
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2015-01-01 2
Total participants 2015-01-01 16,271
Number of participants with account balances 2015-01-01 5,369
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2015-01-01 1,005
2014: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2014 401k membership
Total participants, beginning-of-year 2014-01-01 11,969
Total number of active participants reported on line 7a of the Form 5500 2014-01-01 14,494
Number of retired or separated participants receiving benefits 2014-01-01 0
Number of other retired or separated participants entitled to future benefits 2014-01-01 922
Total of all active and inactive participants 2014-01-01 15,416
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2014-01-01 0
Total participants 2014-01-01 15,416
Number of participants with account balances 2014-01-01 4,347
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2014-01-01 578
2013: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2013 401k membership
Total participants, beginning-of-year 2013-01-01 10,463
Total number of active participants reported on line 7a of the Form 5500 2013-01-01 11,271
Number of retired or separated participants receiving benefits 2013-01-01 0
Number of other retired or separated participants entitled to future benefits 2013-01-01 698
Total of all active and inactive participants 2013-01-01 11,969
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2013-01-01 0
Total participants 2013-01-01 11,969
Number of participants with account balances 2013-01-01 3,579
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2013-01-01 104
2012: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2012 401k membership
Total participants, beginning-of-year 2012-01-01 9,855
Total number of active participants reported on line 7a of the Form 5500 2012-01-01 9,941
Number of retired or separated participants receiving benefits 2012-01-01 0
Number of other retired or separated participants entitled to future benefits 2012-01-01 522
Total of all active and inactive participants 2012-01-01 10,463
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2012-01-01 0
Total participants 2012-01-01 10,463
Number of participants with account balances 2012-01-01 2,683
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2012-01-01 97
2011: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2011 401k membership
Total participants, beginning-of-year 2011-01-01 6,394
Total number of active participants reported on line 7a of the Form 5500 2011-01-01 9,276
Number of retired or separated participants receiving benefits 2011-01-01 0
Number of other retired or separated participants entitled to future benefits 2011-01-01 441
Total of all active and inactive participants 2011-01-01 9,717
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2011-01-01 0
Total participants 2011-01-01 9,717
Number of participants with account balances 2011-01-01 2,119
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2011-01-01 67
2010: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2010 401k membership
Total participants, beginning-of-year 2010-01-01 5,956
Total number of active participants reported on line 7a of the Form 5500 2010-01-01 5,732
Number of retired or separated participants receiving benefits 2010-01-01 0
Number of other retired or separated participants entitled to future benefits 2010-01-01 321
Total of all active and inactive participants 2010-01-01 6,053
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2010-01-01 0
Total participants 2010-01-01 6,053
Number of participants with account balances 2010-01-01 1,278
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2010-01-01 32
2009: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2009 401k membership
Total participants, beginning-of-year 2009-01-01 6,092
Total number of active participants reported on line 7a of the Form 5500 2009-01-01 5,612
Number of retired or separated participants receiving benefits 2009-01-01 0
Number of other retired or separated participants entitled to future benefits 2009-01-01 200
Total of all active and inactive participants 2009-01-01 5,812
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2009-01-01 0
Total participants 2009-01-01 5,812
Number of participants with account balances 2009-01-01 1,097
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2009-01-01 45

Measure	Date	Value
2022: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2022 401k membership
Total participants, beginning-of-year	2022-01-01	22,530
Total number of active participants reported on line 7a of the Form 5500	2022-01-01	23,873
Number of retired or separated participants receiving benefits	2022-01-01	85
Number of other retired or separated participants entitled to future benefits	2022-01-01	3,743
Total of all active and inactive participants	2022-01-01	27,701
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2022-01-01	36
Total participants	2022-01-01	27,737
Number of participants with account balances	2022-01-01	13,201
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2022-01-01	0
2021: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2021 401k membership
Total participants, beginning-of-year	2021-01-01	19,108
Total number of active participants reported on line 7a of the Form 5500	2021-01-01	19,241
Number of retired or separated participants receiving benefits	2021-01-01	73
Number of other retired or separated participants entitled to future benefits	2021-01-01	3,194
Total of all active and inactive participants	2021-01-01	22,508
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2021-01-01	22
Total participants	2021-01-01	22,530
Number of participants with account balances	2021-01-01	10,522
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2021-01-01	1
2020: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2020 401k membership
Total participants, beginning-of-year	2020-01-01	19,064
Total number of active participants reported on line 7a of the Form 5500	2020-01-01	16,298
Number of retired or separated participants receiving benefits	2020-01-01	230
Number of other retired or separated participants entitled to future benefits	2020-01-01	2,567
Total of all active and inactive participants	2020-01-01	19,095
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2020-01-01	13
Total participants	2020-01-01	19,108
Number of participants with account balances	2020-01-01	9,140
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2020-01-01	6
2019: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2019 401k membership
Total participants, beginning-of-year	2019-01-01	16,583
Total number of active participants reported on line 7a of the Form 5500	2019-01-01	16,684
Number of retired or separated participants receiving benefits	2019-01-01	49
Number of other retired or separated participants entitled to future benefits	2019-01-01	2,323
Total of all active and inactive participants	2019-01-01	19,056
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2019-01-01	8
Total participants	2019-01-01	19,064
Number of participants with account balances	2019-01-01	8,080
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2019-01-01	4
2018: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2018 401k membership
Total participants, beginning-of-year	2018-01-01	16,248
Total number of active participants reported on line 7a of the Form 5500	2018-01-01	14,572
Number of retired or separated participants receiving benefits	2018-01-01	46
Number of other retired or separated participants entitled to future benefits	2018-01-01	1,958
Total of all active and inactive participants	2018-01-01	16,576
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2018-01-01	7
Total participants	2018-01-01	16,583
Number of participants with account balances	2018-01-01	6,897
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2018-01-01	5
2017: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2017 401k membership
Total participants, beginning-of-year	2017-01-01	16,553
Total number of active participants reported on line 7a of the Form 5500	2017-01-01	14,279
Number of retired or separated participants receiving benefits	2017-01-01	48
Number of other retired or separated participants entitled to future benefits	2017-01-01	1,914
Total of all active and inactive participants	2017-01-01	16,241
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2017-01-01	7
Total participants	2017-01-01	16,248
Number of participants with account balances	2017-01-01	6,463
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2017-01-01	18
2016: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2016 401k membership
Total participants, beginning-of-year	2016-01-01	16,271
Total number of active participants reported on line 7a of the Form 5500	2016-01-01	14,914
Number of retired or separated participants receiving benefits	2016-01-01	24
Number of other retired or separated participants entitled to future benefits	2016-01-01	1,615
Total of all active and inactive participants	2016-01-01	16,553
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2016-01-01	3
Total participants	2016-01-01	16,556
Number of participants with account balances	2016-01-01	6,060
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2016-01-01	0
2015: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2015 401k membership
Total participants, beginning-of-year	2015-01-01	15,416
Total number of active participants reported on line 7a of the Form 5500	2015-01-01	14,922
Number of retired or separated participants receiving benefits	2015-01-01	0
Number of other retired or separated participants entitled to future benefits	2015-01-01	1,347
Total of all active and inactive participants	2015-01-01	16,269
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2015-01-01	2
Total participants	2015-01-01	16,271
Number of participants with account balances	2015-01-01	5,369
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2015-01-01	1,005
2014: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2014 401k membership
Total participants, beginning-of-year	2014-01-01	11,969
Total number of active participants reported on line 7a of the Form 5500	2014-01-01	14,494
Number of retired or separated participants receiving benefits	2014-01-01	0
Number of other retired or separated participants entitled to future benefits	2014-01-01	922
Total of all active and inactive participants	2014-01-01	15,416
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2014-01-01	0
Total participants	2014-01-01	15,416
Number of participants with account balances	2014-01-01	4,347
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2014-01-01	578
2013: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2013 401k membership
Total participants, beginning-of-year	2013-01-01	10,463
Total number of active participants reported on line 7a of the Form 5500	2013-01-01	11,271
Number of retired or separated participants receiving benefits	2013-01-01	0
Number of other retired or separated participants entitled to future benefits	2013-01-01	698
Total of all active and inactive participants	2013-01-01	11,969
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2013-01-01	0
Total participants	2013-01-01	11,969
Number of participants with account balances	2013-01-01	3,579
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2013-01-01	104
2012: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2012 401k membership
Total participants, beginning-of-year	2012-01-01	9,855
Total number of active participants reported on line 7a of the Form 5500	2012-01-01	9,941
Number of retired or separated participants receiving benefits	2012-01-01	0
Number of other retired or separated participants entitled to future benefits	2012-01-01	522
Total of all active and inactive participants	2012-01-01	10,463
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2012-01-01	0
Total participants	2012-01-01	10,463
Number of participants with account balances	2012-01-01	2,683
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2012-01-01	97
2011: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2011 401k membership
Total participants, beginning-of-year	2011-01-01	6,394
Total number of active participants reported on line 7a of the Form 5500	2011-01-01	9,276
Number of retired or separated participants receiving benefits	2011-01-01	0
Number of other retired or separated participants entitled to future benefits	2011-01-01	441
Total of all active and inactive participants	2011-01-01	9,717
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2011-01-01	0
Total participants	2011-01-01	9,717
Number of participants with account balances	2011-01-01	2,119
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2011-01-01	67
2010: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2010 401k membership
Total participants, beginning-of-year	2010-01-01	5,956
Total number of active participants reported on line 7a of the Form 5500	2010-01-01	5,732
Number of retired or separated participants receiving benefits	2010-01-01	0
Number of other retired or separated participants entitled to future benefits	2010-01-01	321
Total of all active and inactive participants	2010-01-01	6,053
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2010-01-01	0
Total participants	2010-01-01	6,053
Number of participants with account balances	2010-01-01	1,278
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2010-01-01	32
2009: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2009 401k membership
Total participants, beginning-of-year	2009-01-01	6,092
Total number of active participants reported on line 7a of the Form 5500	2009-01-01	5,612
Number of retired or separated participants receiving benefits	2009-01-01	0
Number of other retired or separated participants entitled to future benefits	2009-01-01	200
Total of all active and inactive participants	2009-01-01	5,812
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2009-01-01	0
Total participants	2009-01-01	5,812
Number of participants with account balances	2009-01-01	1,097
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2009-01-01	45

Financial Data on THE MASTEC, INC. 401(K) RETIREMENT PLAN

Measure	Date	Value
2022 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2022 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2022-12-31	$-3,522,465
Total unrealized appreciation/depreciation of assets	2022-12-31	$-3,522,465
Total transfer of assets to this plan	2022-12-31	$0
Total transfer of assets from this plan	2022-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$0
Expenses. Interest paid	2022-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2022-12-31	$0
Total income from all sources (including contributions)	2022-12-31	$92,404,243
Total loss/gain on sale of assets	2022-12-31	$-1,249,885
Total of all expenses incurred	2022-12-31	$45,975,092
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2022-12-31	$45,713,833
Expenses. Certain deemed distributions of participant loans	2022-12-31	$22,915
Value of total corrective distributions	2022-12-31	$4,333
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2022-12-31	$144,329,809
Value of total assets at end of year	2022-12-31	$457,246,623
Value of total assets at beginning of year	2022-12-31	$410,817,472
Total of administrative expenses incurred including professional, contract, advisory and management fees	2022-12-31	$234,011
Total interest from all sources	2022-12-31	$476,531
Total dividends received (eg from common stock, registered investment company shares)	2022-12-31	$13,558,006
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2022-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2022-12-31	$13,558,006
Assets. Real estate other than employer real property at end of year	2022-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2022-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2022-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2022-12-31	$0
Was this plan covered by a fidelity bond	2022-12-31	Yes
Value of fidelity bond cover	2022-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2022-12-31	Yes
Were there any nonexempt tranactions with any party-in-interest	2022-12-31	No
Contributions received from participants	2022-12-31	$58,972,607
Participant contributions at end of year	2022-12-31	$12,033,237
Participant contributions at beginning of year	2022-12-31	$9,583,631
Participant contributions at end of year	2022-12-31	$695,687
Participant contributions at beginning of year	2022-12-31	$411,763
Assets. Other investments not covered elsewhere at end of year	2022-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2022-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2022-12-31	$55,114,952
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2022-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2022-12-31	$140,207
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2022-12-31	$219,385
Assets. Loans (other than to participants) at end of year	2022-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2022-12-31	$0
Other income not declared elsewhere	2022-12-31	$459,665
Administrative expenses (other) incurred	2022-12-31	$234,011
Total non interest bearing cash at end of year	2022-12-31	$0
Total non interest bearing cash at beginning of year	2022-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Income. Non cash contributions	2022-12-31	$0
Value of net income/loss	2022-12-31	$46,429,151
Value of net assets at end of year (total assets less liabilities)	2022-12-31	$457,246,623
Value of net assets at beginning of year (total assets less liabilities)	2022-12-31	$410,817,472
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2022-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2022-12-31	No
Were any leases to which the plan was party in default or uncollectible	2022-12-31	No
Assets. partnership/joint venture interests at end of year	2022-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2022-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2022-12-31	$323,270,041
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2022-12-31	$287,835,717
Interest on participant loans	2022-12-31	$472,512
Interest earned on other investments	2022-12-31	$0
Income. Interest from US Government securities	2022-12-31	$0
Income. Interest from corporate debt instruments	2022-12-31	$0
Value of interest in common/collective trusts at end of year	2022-12-31	$29,541,164
Value of interest in common/collective trusts at beginning of year	2022-12-31	$25,127,937
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2022-12-31	$0
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2022-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2022-12-31	$0
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2022-12-31	$4,019
Asset value of US Government securities at end of year	2022-12-31	$0
Asset value of US Government securities at beginning of year	2022-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2022-12-31	$-61,916,763
Net investment gain/loss from pooled separate accounts	2022-12-31	$0
Net investment gain or loss from common/collective trusts	2022-12-31	$269,345
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2022-12-31	No
Was there a failure to transmit to the plan any participant contributions	2022-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2022-12-31	No
Assets. Invements in employer securities at end of year	2022-12-31	$83,603,882
Assets. Invements in employer securities at beginning of year	2022-12-31	$81,131,068
Contributions received in cash from employer	2022-12-31	$30,242,250
Employer contributions (assets) at end of year	2022-12-31	$7,962,405
Employer contributions (assets) at beginning of year	2022-12-31	$6,507,971
Income. Dividends from preferred stock	2022-12-31	$0
Income. Dividends from common stock	2022-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2022-12-31	$45,713,833
Asset. Corporate debt instrument preferred debt at end of year	2022-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2022-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2022-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2022-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2022-12-31	Yes
Assets. Corporate common stocks other than exployer securities at end of year	2022-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2022-12-31	$0
Did the plan have assets held for investment	2022-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2022-12-31	No
Aggregate proceeds on sale of assets	2022-12-31	$15,054,528
Aggregate carrying amount (costs) on sale of assets	2022-12-31	$16,304,413
Opinion of an independent qualified public accountant for this plan	2022-12-31	Unqualified
Accountancy firm name	2022-12-31	BDO USA, LLP
Accountancy firm EIN	2022-12-31	135381590
2021 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2021 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2021-12-31	$17,868,102
Total unrealized appreciation/depreciation of assets	2021-12-31	$17,868,102
Total transfer of assets to this plan	2021-12-31	$0
Total transfer of assets from this plan	2021-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$0
Expenses. Interest paid	2021-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2021-12-31	$0
Total income from all sources (including contributions)	2021-12-31	$136,355,830
Total loss/gain on sale of assets	2021-12-31	$3,228,535
Total of all expenses incurred	2021-12-31	$39,738,573
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2021-12-31	$39,418,693
Expenses. Certain deemed distributions of participant loans	2021-12-31	$22,872
Value of total corrective distributions	2021-12-31	$11,197
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2021-12-31	$82,313,911
Value of total assets at end of year	2021-12-31	$410,817,472
Value of total assets at beginning of year	2021-12-31	$314,200,215
Total of administrative expenses incurred including professional, contract, advisory and management fees	2021-12-31	$285,811
Total interest from all sources	2021-12-31	$425,311
Total dividends received (eg from common stock, registered investment company shares)	2021-12-31	$13,124,562
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2021-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2021-12-31	$13,124,562
Assets. Real estate other than employer real property at end of year	2021-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2021-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2021-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2021-12-31	$0
Was this plan covered by a fidelity bond	2021-12-31	Yes
Value of fidelity bond cover	2021-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2021-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2021-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2021-12-31	No
Contributions received from participants	2021-12-31	$43,715,931
Participant contributions at end of year	2021-12-31	$9,583,631
Participant contributions at beginning of year	2021-12-31	$9,111,073
Participant contributions at end of year	2021-12-31	$411,763
Participant contributions at beginning of year	2021-12-31	$277,197
Assets. Other investments not covered elsewhere at end of year	2021-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2021-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2021-12-31	$15,448,181
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2021-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2021-12-31	$219,385
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2021-12-31	$0
Assets. Loans (other than to participants) at end of year	2021-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2021-12-31	$0
Other income not declared elsewhere	2021-12-31	$341,052
Administrative expenses (other) incurred	2021-12-31	$285,811
Total non interest bearing cash at end of year	2021-12-31	$0
Total non interest bearing cash at beginning of year	2021-12-31	$119,599
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Income. Non cash contributions	2021-12-31	$0
Value of net income/loss	2021-12-31	$96,617,257
Value of net assets at end of year (total assets less liabilities)	2021-12-31	$410,817,472
Value of net assets at beginning of year (total assets less liabilities)	2021-12-31	$314,200,215
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2021-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2021-12-31	No
Were any leases to which the plan was party in default or uncollectible	2021-12-31	No
Assets. partnership/joint venture interests at end of year	2021-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2021-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2021-12-31	$287,835,717
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2021-12-31	$218,668,464
Interest on participant loans	2021-12-31	$425,232
Interest earned on other investments	2021-12-31	$0
Income. Interest from US Government securities	2021-12-31	$0
Income. Interest from corporate debt instruments	2021-12-31	$0
Value of interest in common/collective trusts at end of year	2021-12-31	$25,127,937
Value of interest in common/collective trusts at beginning of year	2021-12-31	$21,364,893
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2021-12-31	$0
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2021-12-31	$215,811
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2021-12-31	$215,811
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2021-12-31	$79
Asset value of US Government securities at end of year	2021-12-31	$0
Asset value of US Government securities at beginning of year	2021-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2021-12-31	$18,906,844
Net investment gain/loss from pooled separate accounts	2021-12-31	$0
Net investment gain or loss from common/collective trusts	2021-12-31	$147,513
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2021-12-31	No
Was there a failure to transmit to the plan any participant contributions	2021-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2021-12-31	No
Assets. Invements in employer securities at end of year	2021-12-31	$81,131,068
Assets. Invements in employer securities at beginning of year	2021-12-31	$59,182,364
Contributions received in cash from employer	2021-12-31	$23,149,799
Employer contributions (assets) at end of year	2021-12-31	$6,507,971
Employer contributions (assets) at beginning of year	2021-12-31	$5,260,814
Income. Dividends from preferred stock	2021-12-31	$0
Income. Dividends from common stock	2021-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2021-12-31	$39,418,693
Asset. Corporate debt instrument preferred debt at end of year	2021-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2021-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2021-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2021-12-31	$0
Assets. Corporate common stocks other than exployer securities at end of year	2021-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2021-12-31	$0
Did the plan have assets held for investment	2021-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2021-12-31	No
Aggregate proceeds on sale of assets	2021-12-31	$19,404,693
Aggregate carrying amount (costs) on sale of assets	2021-12-31	$16,176,158
Opinion of an independent qualified public accountant for this plan	2021-12-31	Unqualified
Accountancy firm name	2021-12-31	BDO USA, LLP
Accountancy firm EIN	2021-12-31	135381590
2020 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2020 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2020-12-31	$8,499,084
Total unrealized appreciation/depreciation of assets	2020-12-31	$8,499,084
Total transfer of assets to this plan	2020-12-31	$0
Total transfer of assets from this plan	2020-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$0
Expenses. Interest paid	2020-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2020-12-31	$0
Total income from all sources (including contributions)	2020-12-31	$89,233,673
Total loss/gain on sale of assets	2020-12-31	$-2,822,207
Total of all expenses incurred	2020-12-31	$38,815,823
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2020-12-31	$38,592,451
Expenses. Certain deemed distributions of participant loans	2020-12-31	$5,247
Value of total corrective distributions	2020-12-31	$18,895
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2020-12-31	$58,984,814
Value of total assets at end of year	2020-12-31	$314,200,215
Value of total assets at beginning of year	2020-12-31	$263,782,365
Total of administrative expenses incurred including professional, contract, advisory and management fees	2020-12-31	$199,230
Total interest from all sources	2020-12-31	$449,624
Total dividends received (eg from common stock, registered investment company shares)	2020-12-31	$7,530,572
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2020-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2020-12-31	$7,530,572
Assets. Real estate other than employer real property at end of year	2020-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2020-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2020-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2020-12-31	$0
Was this plan covered by a fidelity bond	2020-12-31	Yes
Value of fidelity bond cover	2020-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2020-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2020-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2020-12-31	No
Contributions received from participants	2020-12-31	$35,370,026
Participant contributions at end of year	2020-12-31	$9,111,073
Participant contributions at beginning of year	2020-12-31	$8,028,328
Participant contributions at end of year	2020-12-31	$277,197
Participant contributions at beginning of year	2020-12-31	$578,571
Assets. Other investments not covered elsewhere at end of year	2020-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2020-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2020-12-31	$4,312,026
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2020-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2020-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2020-12-31	$0
Assets. Loans (other than to participants) at end of year	2020-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2020-12-31	$0
Other income not declared elsewhere	2020-12-31	$463,320
Administrative expenses (other) incurred	2020-12-31	$199,230
Total non interest bearing cash at end of year	2020-12-31	$119,599
Total non interest bearing cash at beginning of year	2020-12-31	$37,477
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Income. Non cash contributions	2020-12-31	$0
Value of net income/loss	2020-12-31	$50,417,850
Value of net assets at end of year (total assets less liabilities)	2020-12-31	$314,200,215
Value of net assets at beginning of year (total assets less liabilities)	2020-12-31	$263,782,365
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2020-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2020-12-31	No
Were any leases to which the plan was party in default or uncollectible	2020-12-31	No
Assets. partnership/joint venture interests at end of year	2020-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2020-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2020-12-31	$218,668,464
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2020-12-31	$180,161,978
Interest on participant loans	2020-12-31	$449,197
Interest earned on other investments	2020-12-31	$0
Income. Interest from US Government securities	2020-12-31	$0
Income. Interest from corporate debt instruments	2020-12-31	$0
Value of interest in common/collective trusts at end of year	2020-12-31	$21,364,893
Value of interest in common/collective trusts at beginning of year	2020-12-31	$18,448,423
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2020-12-31	$215,811
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2020-12-31	$173,307
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2020-12-31	$173,307
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2020-12-31	$427
Asset value of US Government securities at end of year	2020-12-31	$0
Asset value of US Government securities at beginning of year	2020-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2020-12-31	$15,858,732
Net investment gain/loss from pooled separate accounts	2020-12-31	$0
Net investment gain or loss from common/collective trusts	2020-12-31	$269,734
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2020-12-31	No
Was there a failure to transmit to the plan any participant contributions	2020-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2020-12-31	No
Assets. Invements in employer securities at end of year	2020-12-31	$59,182,364
Assets. Invements in employer securities at beginning of year	2020-12-31	$51,902,284
Contributions received in cash from employer	2020-12-31	$19,302,762
Employer contributions (assets) at end of year	2020-12-31	$5,260,814
Employer contributions (assets) at beginning of year	2020-12-31	$4,451,997
Income. Dividends from preferred stock	2020-12-31	$0
Income. Dividends from common stock	2020-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2020-12-31	$38,592,451
Asset. Corporate debt instrument preferred debt at end of year	2020-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2020-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2020-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2020-12-31	$0
Assets. Corporate common stocks other than exployer securities at end of year	2020-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2020-12-31	$0
Did the plan have assets held for investment	2020-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2020-12-31	No
Aggregate proceeds on sale of assets	2020-12-31	$15,233,266
Aggregate carrying amount (costs) on sale of assets	2020-12-31	$18,055,473
Opinion of an independent qualified public accountant for this plan	2020-12-31	Unqualified
Accountancy firm name	2020-12-31	BDO USA, LLP
Accountancy firm EIN	2020-12-31	135381590
2019 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2019 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2019-12-31	$17,167,843
Total unrealized appreciation/depreciation of assets	2019-12-31	$17,167,843
Total transfer of assets to this plan	2019-12-31	$0
Total transfer of assets from this plan	2019-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$0
Expenses. Interest paid	2019-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2019-12-31	$0
Total income from all sources (including contributions)	2019-12-31	$100,837,081
Total loss/gain on sale of assets	2019-12-31	$1,767,186
Total of all expenses incurred	2019-12-31	$24,211,295
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2019-12-31	$23,996,003
Expenses. Certain deemed distributions of participant loans	2019-12-31	$225
Value of total corrective distributions	2019-12-31	$2,483
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2019-12-31	$50,268,400
Value of total assets at end of year	2019-12-31	$263,782,365
Value of total assets at beginning of year	2019-12-31	$187,156,579
Total of administrative expenses incurred including professional, contract, advisory and management fees	2019-12-31	$212,584
Total interest from all sources	2019-12-31	$372,979
Total dividends received (eg from common stock, registered investment company shares)	2019-12-31	$5,179,854
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2019-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2019-12-31	$5,179,854
Assets. Real estate other than employer real property at end of year	2019-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2019-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2019-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2019-12-31	$0
Was this plan covered by a fidelity bond	2019-12-31	Yes
Value of fidelity bond cover	2019-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2019-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2019-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2019-12-31	No
Contributions received from participants	2019-12-31	$29,155,405
Participant contributions at end of year	2019-12-31	$8,028,328
Participant contributions at beginning of year	2019-12-31	$6,573,646
Participant contributions at end of year	2019-12-31	$578,571
Participant contributions at beginning of year	2019-12-31	$614,678
Assets. Other investments not covered elsewhere at end of year	2019-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2019-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2019-12-31	$4,604,046
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2019-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2019-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2019-12-31	$0
Assets. Loans (other than to participants) at end of year	2019-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2019-12-31	$0
Other income not declared elsewhere	2019-12-31	$289,860
Administrative expenses (other) incurred	2019-12-31	$212,584
Total non interest bearing cash at end of year	2019-12-31	$37,477
Total non interest bearing cash at beginning of year	2019-12-31	$4,165
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Income. Non cash contributions	2019-12-31	$0
Value of net income/loss	2019-12-31	$76,625,786
Value of net assets at end of year (total assets less liabilities)	2019-12-31	$263,782,365
Value of net assets at beginning of year (total assets less liabilities)	2019-12-31	$187,156,579
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2019-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2019-12-31	No
Were any leases to which the plan was party in default or uncollectible	2019-12-31	No
Assets. partnership/joint venture interests at end of year	2019-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2019-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2019-12-31	$180,161,978
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2019-12-31	$129,291,263
Interest on participant loans	2019-12-31	$371,226
Interest earned on other investments	2019-12-31	$0
Income. Interest from US Government securities	2019-12-31	$0
Income. Interest from corporate debt instruments	2019-12-31	$0
Value of interest in common/collective trusts at end of year	2019-12-31	$18,448,423
Value of interest in common/collective trusts at beginning of year	2019-12-31	$15,704,097
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2019-12-31	$173,307
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2019-12-31	$37,887
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2019-12-31	$37,887
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2019-12-31	$1,753
Asset value of US Government securities at end of year	2019-12-31	$0
Asset value of US Government securities at beginning of year	2019-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2019-12-31	$25,471,647
Net investment gain/loss from pooled separate accounts	2019-12-31	$0
Net investment gain or loss from common/collective trusts	2019-12-31	$319,312
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2019-12-31	No
Was there a failure to transmit to the plan any participant contributions	2019-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2019-12-31	No
Assets. Invements in employer securities at end of year	2019-12-31	$51,902,284
Assets. Invements in employer securities at beginning of year	2019-12-31	$31,289,587
Contributions received in cash from employer	2019-12-31	$16,508,949
Employer contributions (assets) at end of year	2019-12-31	$4,451,997
Employer contributions (assets) at beginning of year	2019-12-31	$3,641,256
Income. Dividends from preferred stock	2019-12-31	$0
Income. Dividends from common stock	2019-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2019-12-31	$23,996,003
Asset. Corporate debt instrument preferred debt at end of year	2019-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2019-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2019-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2019-12-31	$0
Assets. Corporate common stocks other than exployer securities at end of year	2019-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2019-12-31	$0
Did the plan have assets held for investment	2019-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2019-12-31	No
Aggregate proceeds on sale of assets	2019-12-31	$10,006,881
Aggregate carrying amount (costs) on sale of assets	2019-12-31	$8,239,695
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2019-12-31	No
Opinion of an independent qualified public accountant for this plan	2019-12-31	Unqualified
Accountancy firm name	2019-12-31	BDO USA, LLP
Accountancy firm EIN	2019-12-31	135381590
2018 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2018 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2018-12-31	$-6,289,339
Total unrealized appreciation/depreciation of assets	2018-12-31	$-6,289,339
Total transfer of assets to this plan	2018-12-31	$0
Total transfer of assets from this plan	2018-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$0
Expenses. Interest paid	2018-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2018-12-31	$0
Total income from all sources (including contributions)	2018-12-31	$29,172,674
Total loss/gain on sale of assets	2018-12-31	$-198,750
Total of all expenses incurred	2018-12-31	$25,756,426
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2018-12-31	$23,911,294
Expenses. Certain deemed distributions of participant loans	2018-12-31	$1,581,879
Value of total corrective distributions	2018-12-31	$9,990
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2018-12-31	$40,409,991
Value of total assets at end of year	2018-12-31	$187,156,579
Value of total assets at beginning of year	2018-12-31	$183,740,331
Total of administrative expenses incurred including professional, contract, advisory and management fees	2018-12-31	$253,263
Total interest from all sources	2018-12-31	$276,639
Total dividends received (eg from common stock, registered investment company shares)	2018-12-31	$5,722,227
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2018-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2018-12-31	$5,722,227
Assets. Real estate other than employer real property at end of year	2018-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2018-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2018-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2018-12-31	$0
Was this plan covered by a fidelity bond	2018-12-31	Yes
Value of fidelity bond cover	2018-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2018-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2018-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2018-12-31	No
Contributions received from participants	2018-12-31	$23,792,784
Participant contributions at end of year	2018-12-31	$6,573,646
Participant contributions at beginning of year	2018-12-31	$5,891,118
Participant contributions at end of year	2018-12-31	$614,678
Participant contributions at beginning of year	2018-12-31	$516,251
Assets. Other investments not covered elsewhere at end of year	2018-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2018-12-31	$3,877
Income. Received or receivable in cash from other sources (including rollovers)	2018-12-31	$3,244,628
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2018-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2018-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2018-12-31	$0
Assets. Loans (other than to participants) at end of year	2018-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2018-12-31	$0
Other income not declared elsewhere	2018-12-31	$344,143
Administrative expenses (other) incurred	2018-12-31	$253,263
Total non interest bearing cash at end of year	2018-12-31	$4,165
Total non interest bearing cash at beginning of year	2018-12-31	$6,480
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Income. Non cash contributions	2018-12-31	$0
Value of net income/loss	2018-12-31	$3,416,248
Value of net assets at end of year (total assets less liabilities)	2018-12-31	$187,156,579
Value of net assets at beginning of year (total assets less liabilities)	2018-12-31	$183,740,331
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2018-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2018-12-31	No
Were any leases to which the plan was party in default or uncollectible	2018-12-31	No
Assets. partnership/joint venture interests at end of year	2018-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2018-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2018-12-31	$129,291,263
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2018-12-31	$123,485,109
Interest on participant loans	2018-12-31	$275,435
Interest earned on other investments	2018-12-31	$0
Income. Interest from US Government securities	2018-12-31	$0
Income. Interest from corporate debt instruments	2018-12-31	$0
Value of interest in common/collective trusts at end of year	2018-12-31	$15,704,097
Value of interest in common/collective trusts at beginning of year	2018-12-31	$13,747,260
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2018-12-31	$37,887
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2018-12-31	$377,784
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2018-12-31	$377,784
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2018-12-31	$1,204
Asset value of US Government securities at end of year	2018-12-31	$0
Asset value of US Government securities at beginning of year	2018-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2018-12-31	$-11,309,820
Net investment gain/loss from pooled separate accounts	2018-12-31	$0
Net investment gain or loss from common/collective trusts	2018-12-31	$217,583
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2018-12-31	No
Was there a failure to transmit to the plan any participant contributions	2018-12-31	No
Has the plan failed to provide any benefit when due under the plan	2018-12-31	No
Assets. Invements in employer securities at end of year	2018-12-31	$31,289,587
Assets. Invements in employer securities at beginning of year	2018-12-31	$36,592,179
Contributions received in cash from employer	2018-12-31	$13,372,579
Employer contributions (assets) at end of year	2018-12-31	$3,641,256
Employer contributions (assets) at beginning of year	2018-12-31	$3,120,273
Income. Dividends from preferred stock	2018-12-31	$0
Income. Dividends from common stock	2018-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2018-12-31	$23,911,294
Asset. Corporate debt instrument preferred debt at end of year	2018-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2018-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2018-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2018-12-31	$0
Assets. Corporate common stocks other than exployer securities at end of year	2018-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2018-12-31	$0
Did the plan have assets held for investment	2018-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2018-12-31	No
Aggregate proceeds on sale of assets	2018-12-31	$7,359,052
Aggregate carrying amount (costs) on sale of assets	2018-12-31	$7,557,802
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2018-12-31	No
Opinion of an independent qualified public accountant for this plan	2018-12-31	Unqualified
Accountancy firm name	2018-12-31	BDO USA, LLP
Accountancy firm EIN	2018-12-31	135381590
2017 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2017 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2017-12-31	$7,441,495
Total unrealized appreciation/depreciation of assets	2017-12-31	$7,441,495
Total transfer of assets to this plan	2017-12-31	$0
Total transfer of assets from this plan	2017-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$0
Expenses. Interest paid	2017-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2017-12-31	$0
Total income from all sources (including contributions)	2017-12-31	$59,406,534
Total loss/gain on sale of assets	2017-12-31	$687,831
Total of all expenses incurred	2017-12-31	$19,267,481
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2017-12-31	$17,794,362
Expenses. Certain deemed distributions of participant loans	2017-12-31	$1,224,603
Value of total corrective distributions	2017-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2017-12-31	$34,376,673
Value of total assets at end of year	2017-12-31	$183,740,331
Value of total assets at beginning of year	2017-12-31	$143,601,278
Total of administrative expenses incurred including professional, contract, advisory and management fees	2017-12-31	$248,516
Total interest from all sources	2017-12-31	$208,071
Total dividends received (eg from common stock, registered investment company shares)	2017-12-31	$3,536,959
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2017-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2017-12-31	$3,536,959
Assets. Real estate other than employer real property at end of year	2017-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2017-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2017-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2017-12-31	$0
Was this plan covered by a fidelity bond	2017-12-31	Yes
Value of fidelity bond cover	2017-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2017-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2017-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2017-12-31	No
Contributions received from participants	2017-12-31	$20,851,612
Participant contributions at end of year	2017-12-31	$5,891,118
Participant contributions at beginning of year	2017-12-31	$4,546,671
Participant contributions at end of year	2017-12-31	$516,251
Participant contributions at beginning of year	2017-12-31	$464,452
Assets. Other investments not covered elsewhere at end of year	2017-12-31	$3,877
Assets. Other investments not covered elsewhere at beginning of year	2017-12-31	$1,945
Income. Received or receivable in cash from other sources (including rollovers)	2017-12-31	$1,574,408
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2017-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2017-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2017-12-31	$0
Assets. Loans (other than to participants) at end of year	2017-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2017-12-31	$0
Other income not declared elsewhere	2017-12-31	$334,263
Administrative expenses (other) incurred	2017-12-31	$248,516
Total non interest bearing cash at end of year	2017-12-31	$6,480
Total non interest bearing cash at beginning of year	2017-12-31	$48,326
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Income. Non cash contributions	2017-12-31	$0
Value of net income/loss	2017-12-31	$40,139,053
Value of net assets at end of year (total assets less liabilities)	2017-12-31	$183,740,331
Value of net assets at beginning of year (total assets less liabilities)	2017-12-31	$143,601,278
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2017-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2017-12-31	No
Were any leases to which the plan was party in default or uncollectible	2017-12-31	No
Assets. partnership/joint venture interests at end of year	2017-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2017-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2017-12-31	$123,485,109
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2017-12-31	$94,995,088
Interest on participant loans	2017-12-31	$207,429
Interest earned on other investments	2017-12-31	$0
Income. Interest from US Government securities	2017-12-31	$0
Income. Interest from corporate debt instruments	2017-12-31	$0
Value of interest in common/collective trusts at end of year	2017-12-31	$13,747,260
Value of interest in common/collective trusts at beginning of year	2017-12-31	$12,685,690
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2017-12-31	$377,784
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2017-12-31	$87,157
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2017-12-31	$87,157
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2017-12-31	$642
Asset value of US Government securities at end of year	2017-12-31	$0
Asset value of US Government securities at beginning of year	2017-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2017-12-31	$12,656,413
Net investment gain/loss from pooled separate accounts	2017-12-31	$0
Net investment gain or loss from common/collective trusts	2017-12-31	$164,829
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2017-12-31	No
Was there a failure to transmit to the plan any participant contributions	2017-12-31	No
Has the plan failed to provide any benefit when due under the plan	2017-12-31	No
Assets. Invements in employer securities at end of year	2017-12-31	$36,592,179
Assets. Invements in employer securities at beginning of year	2017-12-31	$27,834,921
Contributions received in cash from employer	2017-12-31	$11,950,653
Employer contributions (assets) at end of year	2017-12-31	$3,120,273
Employer contributions (assets) at beginning of year	2017-12-31	$2,937,028
Income. Dividends from preferred stock	2017-12-31	$0
Income. Dividends from common stock	2017-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2017-12-31	$17,794,362
Asset. Corporate debt instrument preferred debt at end of year	2017-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2017-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2017-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2017-12-31	$0
Assets. Corporate common stocks other than exployer securities at end of year	2017-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2017-12-31	$0
Did the plan have assets held for investment	2017-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2017-12-31	No
Aggregate proceeds on sale of assets	2017-12-31	$10,758,145
Aggregate carrying amount (costs) on sale of assets	2017-12-31	$10,070,314
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2017-12-31	No
Opinion of an independent qualified public accountant for this plan	2017-12-31	Unqualified
Accountancy firm name	2017-12-31	BDO USA. LLP
Accountancy firm EIN	2017-12-31	135381590
2016 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2016 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2016-12-31	$14,000,121
Total unrealized appreciation/depreciation of assets	2016-12-31	$14,000,121
Total transfer of assets to this plan	2016-12-31	$0
Total transfer of assets from this plan	2016-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$0
Expenses. Interest paid	2016-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2016-12-31	$0
Total income from all sources (including contributions)	2016-12-31	$54,372,632
Total loss/gain on sale of assets	2016-12-31	$1,426,660
Total of all expenses incurred	2016-12-31	$15,361,943
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2016-12-31	$14,569,376
Expenses. Certain deemed distributions of participant loans	2016-12-31	$527,727
Value of total corrective distributions	2016-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2016-12-31	$32,568,103
Value of total assets at end of year	2016-12-31	$143,601,278
Value of total assets at beginning of year	2016-12-31	$104,590,589
Total of administrative expenses incurred including professional, contract, advisory and management fees	2016-12-31	$264,840
Total interest from all sources	2016-12-31	$151,234
Total dividends received (eg from common stock, registered investment company shares)	2016-12-31	$1,967,792
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2016-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2016-12-31	$1,967,792
Assets. Real estate other than employer real property at end of year	2016-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2016-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2016-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2016-12-31	$0
Was this plan covered by a fidelity bond	2016-12-31	Yes
Value of fidelity bond cover	2016-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2016-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2016-12-31	No
Contributions received from participants	2016-12-31	$19,088,345
Participant contributions at end of year	2016-12-31	$4,546,671
Participant contributions at beginning of year	2016-12-31	$3,588,713
Participant contributions at end of year	2016-12-31	$464,452
Participant contributions at beginning of year	2016-12-31	$410,904
Assets. Other investments not covered elsewhere at end of year	2016-12-31	$1,945
Assets. Other investments not covered elsewhere at beginning of year	2016-12-31	$422
Income. Received or receivable in cash from other sources (including rollovers)	2016-12-31	$2,302,378
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2016-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2016-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2016-12-31	$0
Assets. Loans (other than to participants) at end of year	2016-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2016-12-31	$0
Other income not declared elsewhere	2016-12-31	$380,556
Administrative expenses (other) incurred	2016-12-31	$264,840
Total non interest bearing cash at end of year	2016-12-31	$48,326
Total non interest bearing cash at beginning of year	2016-12-31	$5,246
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Income. Non cash contributions	2016-12-31	$0
Value of net income/loss	2016-12-31	$39,010,689
Value of net assets at end of year (total assets less liabilities)	2016-12-31	$143,601,278
Value of net assets at beginning of year (total assets less liabilities)	2016-12-31	$104,590,589
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2016-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2016-12-31	No
Were any leases to which the plan was party in default or uncollectible	2016-12-31	No
Assets. partnership/joint venture interests at end of year	2016-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2016-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2016-12-31	$94,995,088
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2016-12-31	$76,672,937
Interest on participant loans	2016-12-31	$151,234
Interest earned on other investments	2016-12-31	$0
Income. Interest from US Government securities	2016-12-31	$0
Income. Interest from corporate debt instruments	2016-12-31	$0
Value of interest in common/collective trusts at end of year	2016-12-31	$12,685,690
Value of interest in common/collective trusts at beginning of year	2016-12-31	$10,714,782
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2016-12-31	$87,157
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2016-12-31	$51,049
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2016-12-31	$51,049
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2016-12-31	$0
Asset value of US Government securities at end of year	2016-12-31	$0
Asset value of US Government securities at beginning of year	2016-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2016-12-31	$3,751,646
Net investment gain/loss from pooled separate accounts	2016-12-31	$0
Net investment gain or loss from common/collective trusts	2016-12-31	$126,520
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2016-12-31	No
Was there a failure to transmit to the plan any participant contributions	2016-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2016-12-31	No
Assets. Invements in employer securities at end of year	2016-12-31	$27,834,921
Assets. Invements in employer securities at beginning of year	2016-12-31	$10,361,154
Contributions received in cash from employer	2016-12-31	$11,177,380
Employer contributions (assets) at end of year	2016-12-31	$2,937,028
Employer contributions (assets) at beginning of year	2016-12-31	$2,785,382
Income. Dividends from preferred stock	2016-12-31	$0
Income. Dividends from common stock	2016-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2016-12-31	$14,569,376
Asset. Corporate debt instrument preferred debt at end of year	2016-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2016-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2016-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2016-12-31	$0
Assets. Corporate common stocks other than exployer securities at end of year	2016-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2016-12-31	$0
Did the plan have assets held for investment	2016-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2016-12-31	No
Aggregate proceeds on sale of assets	2016-12-31	$6,378,788
Aggregate carrying amount (costs) on sale of assets	2016-12-31	$4,952,128
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2016-12-31	No
Opinion of an independent qualified public accountant for this plan	2016-12-31	Unqualified
Accountancy firm name	2016-12-31	BDO USA, LLP
Accountancy firm EIN	2016-12-31	135381590
2015 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2015 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2015-12-31	$-2,343,651
Total unrealized appreciation/depreciation of assets	2015-12-31	$-2,343,651
Total transfer of assets to this plan	2015-12-31	$0
Total transfer of assets from this plan	2015-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$0
Expenses. Interest paid	2015-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2015-12-31	$0
Total income from all sources (including contributions)	2015-12-31	$29,578,013
Total loss/gain on sale of assets	2015-12-31	$-363,972
Total of all expenses incurred	2015-12-31	$12,509,649
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2015-12-31	$11,625,230
Expenses. Certain deemed distributions of participant loans	2015-12-31	$611,301
Value of total corrective distributions	2015-12-31	$2,707
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2015-12-31	$32,343,051
Value of total assets at end of year	2015-12-31	$104,590,589
Value of total assets at beginning of year	2015-12-31	$87,522,225
Total of administrative expenses incurred including professional, contract, advisory and management fees	2015-12-31	$270,411
Total interest from all sources	2015-12-31	$127,569
Total dividends received (eg from common stock, registered investment company shares)	2015-12-31	$2,637,170
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2015-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2015-12-31	$2,637,170
Assets. Real estate other than employer real property at end of year	2015-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2015-12-31	$0
Was this plan covered by a fidelity bond	2015-12-31	Yes
Value of fidelity bond cover	2015-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2015-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2015-12-31	No
Contributions received from participants	2015-12-31	$17,497,291
Participant contributions at end of year	2015-12-31	$3,588,713
Participant contributions at beginning of year	2015-12-31	$2,877,133
Participant contributions at end of year	2015-12-31	$410,904
Participant contributions at beginning of year	2015-12-31	$74,890
Assets. Other investments not covered elsewhere at end of year	2015-12-31	$422
Income. Received or receivable in cash from other sources (including rollovers)	2015-12-31	$4,580,046
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2015-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2015-12-31	$0
Assets. Loans (other than to participants) at end of year	2015-12-31	$0
Other income not declared elsewhere	2015-12-31	$349,235
Administrative expenses (other) incurred	2015-12-31	$270,411
Total non interest bearing cash at end of year	2015-12-31	$5,246
Total non interest bearing cash at beginning of year	2015-12-31	$7,260
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Income. Non cash contributions	2015-12-31	$0
Value of net income/loss	2015-12-31	$17,068,364
Value of net assets at end of year (total assets less liabilities)	2015-12-31	$104,590,589
Value of net assets at beginning of year (total assets less liabilities)	2015-12-31	$87,522,225
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2015-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2015-12-31	No
Were any leases to which the plan was party in default or uncollectible	2015-12-31	No
Assets. partnership/joint venture interests at end of year	2015-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2015-12-31	$76,672,937
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2015-12-31	$63,793,810
Interest on participant loans	2015-12-31	$127,560
Interest earned on other investments	2015-12-31	$0
Income. Interest from US Government securities	2015-12-31	$0
Income. Interest from corporate debt instruments	2015-12-31	$0
Value of interest in common/collective trusts at end of year	2015-12-31	$10,714,782
Value of interest in common/collective trusts at beginning of year	2015-12-31	$9,189,891
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2015-12-31	$51,049
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2015-12-31	$-33,835
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2015-12-31	$-33,835
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2015-12-31	$9
Asset value of US Government securities at end of year	2015-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2015-12-31	$-3,278,440
Net investment gain/loss from pooled separate accounts	2015-12-31	$0
Net investment gain or loss from common/collective trusts	2015-12-31	$107,051
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2015-12-31	No
Was there a failure to transmit to the plan any participant contributions	2015-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2015-12-31	No
Assets. Invements in employer securities at end of year	2015-12-31	$10,361,154
Assets. Invements in employer securities at beginning of year	2015-12-31	$9,679,613
Contributions received in cash from employer	2015-12-31	$10,265,714
Employer contributions (assets) at end of year	2015-12-31	$2,785,382
Employer contributions (assets) at beginning of year	2015-12-31	$1,933,463
Income. Dividends from preferred stock	2015-12-31	$0
Income. Dividends from common stock	2015-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2015-12-31	$11,625,230
Asset. Corporate debt instrument preferred debt at end of year	2015-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2015-12-31	$0
Assets. Corporate common stocks other than exployer securities at end of year	2015-12-31	$0
Did the plan have assets held for investment	2015-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2015-12-31	No
Aggregate proceeds on sale of assets	2015-12-31	$2,656,084
Aggregate carrying amount (costs) on sale of assets	2015-12-31	$3,020,056
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2015-12-31	No
Opinion of an independent qualified public accountant for this plan	2015-12-31	Unqualified
Accountancy firm name	2015-12-31	BDO USA, LLP
Accountancy firm EIN	2015-12-31	135381590
2014 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2014 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2014-12-31	$-4,073,609
Total unrealized appreciation/depreciation of assets	2014-12-31	$-4,073,609
Total transfer of assets to this plan	2014-12-31	$0
Total transfer of assets from this plan	2014-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Expenses. Interest paid	2014-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2014-12-31	$0
Total income from all sources (including contributions)	2014-12-31	$22,968,493
Total loss/gain on sale of assets	2014-12-31	$-203,440
Total of all expenses incurred	2014-12-31	$11,615,573
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2014-12-31	$10,914,133
Expenses. Certain deemed distributions of participant loans	2014-12-31	$470,328
Value of total corrective distributions	2014-12-31	$823
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2014-12-31	$23,088,503
Value of total assets at end of year	2014-12-31	$87,522,225
Value of total assets at beginning of year	2014-12-31	$76,169,305
Total of administrative expenses incurred including professional, contract, advisory and management fees	2014-12-31	$230,289
Total interest from all sources	2014-12-31	$106,103
Total dividends received (eg from common stock, registered investment company shares)	2014-12-31	$3,082,413
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2014-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2014-12-31	$3,082,413
Assets. Real estate other than employer real property at end of year	2014-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2014-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2014-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2014-12-31	$0
Was this plan covered by a fidelity bond	2014-12-31	Yes
Value of fidelity bond cover	2014-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2014-12-31	Yes
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2014-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2014-12-31	No
Contributions received from participants	2014-12-31	$13,792,112
Participant contributions at end of year	2014-12-31	$2,877,133
Participant contributions at beginning of year	2014-12-31	$2,239,899
Participant contributions at end of year	2014-12-31	$74,890
Participant contributions at beginning of year	2014-12-31	$50,784
Income. Received or receivable in cash from other sources (including rollovers)	2014-12-31	$1,329,462
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2014-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2014-12-31	$0
Assets. Loans (other than to participants) at end of year	2014-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2014-12-31	$0
Other income not declared elsewhere	2014-12-31	$213,356
Administrative expenses (other) incurred	2014-12-31	$230,289
Total non interest bearing cash at end of year	2014-12-31	$7,260
Total non interest bearing cash at beginning of year	2014-12-31	$3,088
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Income. Non cash contributions	2014-12-31	$0
Value of net income/loss	2014-12-31	$11,352,920
Value of net assets at end of year (total assets less liabilities)	2014-12-31	$87,522,225
Value of net assets at beginning of year (total assets less liabilities)	2014-12-31	$76,169,305
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2014-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2014-12-31	No
Were any leases to which the plan was party in default or uncollectible	2014-12-31	No
Assets. partnership/joint venture interests at end of year	2014-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2014-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2014-12-31	$63,793,810
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2014-12-31	$51,159,430
Interest on participant loans	2014-12-31	$106,103
Interest earned on other investments	2014-12-31	$0
Income. Interest from US Government securities	2014-12-31	$0
Value of interest in common/collective trusts at end of year	2014-12-31	$9,189,891
Value of interest in common/collective trusts at beginning of year	2014-12-31	$9,063,591
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2014-12-31	$-33,835
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2014-12-31	$-5,469
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2014-12-31	$-5,469
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2014-12-31	$0
Asset value of US Government securities at end of year	2014-12-31	$0
Asset value of US Government securities at beginning of year	2014-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2014-12-31	$655,694
Net investment gain/loss from pooled separate accounts	2014-12-31	$0
Net investment gain or loss from common/collective trusts	2014-12-31	$99,473
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2014-12-31	No
Was there a failure to transmit to the plan any participant contributions	2014-12-31	No
Has the plan failed to provide any benefit when due under the plan	2014-12-31	No
Assets. Invements in employer securities at end of year	2014-12-31	$9,679,613
Assets. Invements in employer securities at beginning of year	2014-12-31	$11,900,684
Contributions received in cash from employer	2014-12-31	$7,966,929
Employer contributions (assets) at end of year	2014-12-31	$1,933,463
Employer contributions (assets) at beginning of year	2014-12-31	$1,757,298
Income. Dividends from preferred stock	2014-12-31	$0
Income. Dividends from common stock	2014-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2014-12-31	$10,914,133
Asset. Corporate debt instrument preferred debt at end of year	2014-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2014-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2014-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2014-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2014-12-31	Yes
Assets. Corporate common stocks other than exployer securities at end of year	2014-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2014-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2014-12-31	$0
Did the plan have assets held for investment	2014-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2014-12-31	No
Aggregate proceeds on sale of assets	2014-12-31	$3,469,803
Aggregate carrying amount (costs) on sale of assets	2014-12-31	$3,673,243
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2014-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2014-12-31	Disclaimer
Accountancy firm name	2014-12-31	BDO USA, LLP
Accountancy firm EIN	2014-12-31	135381590
2013 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2013 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2013-12-31	$1,710,948
Total unrealized appreciation/depreciation of assets	2013-12-31	$1,710,948
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$108,564
Total income from all sources (including contributions)	2013-12-31	$30,513,023
Total loss/gain on sale of assets	2013-12-31	$1,052,487
Total of all expenses incurred	2013-12-31	$9,901,782
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2013-12-31	$9,507,769
Expenses. Certain deemed distributions of participant loans	2013-12-31	$316,874
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2013-12-31	$17,822,517
Value of total assets at end of year	2013-12-31	$76,169,305
Value of total assets at beginning of year	2013-12-31	$55,666,628
Total of administrative expenses incurred including professional, contract, advisory and management fees	2013-12-31	$77,139
Total interest from all sources	2013-12-31	$146,669
Total dividends received (eg from common stock, registered investment company shares)	2013-12-31	$1,724,686
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2013-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2013-12-31	$1,724,686
Was this plan covered by a fidelity bond	2013-12-31	Yes
Value of fidelity bond cover	2013-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2013-12-31	Yes
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2013-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2013-12-31	No
Contributions received from participants	2013-12-31	$10,203,254
Participant contributions at end of year	2013-12-31	$2,239,899
Participant contributions at beginning of year	2013-12-31	$1,813,796
Participant contributions at end of year	2013-12-31	$50,784
Participant contributions at beginning of year	2013-12-31	$161,478
Assets. Other investments not covered elsewhere at end of year	2013-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2013-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2013-12-31	$1,709,734
Other income not declared elsewhere	2013-12-31	$197,183
Administrative expenses (other) incurred	2013-12-31	$77,139
Total non interest bearing cash at end of year	2013-12-31	$3,088
Total non interest bearing cash at beginning of year	2013-12-31	$114
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2013-12-31	No
Value of net income/loss	2013-12-31	$20,611,241
Value of net assets at end of year (total assets less liabilities)	2013-12-31	$76,169,305
Value of net assets at beginning of year (total assets less liabilities)	2013-12-31	$55,558,064
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2013-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2013-12-31	No
Were any leases to which the plan was party in default or uncollectible	2013-12-31	No
Value of interest in registered invesment companies (eg mutual funds) at end of year	2013-12-31	$51,159,430
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2013-12-31	$27,070,062
Value of interest in pooled separate accounts at end of year	2013-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2013-12-31	$8,274,352
Interest on participant loans	2013-12-31	$79,483
Interest earned on other investments	2013-12-31	$67,186
Value of interest in common/collective trusts at end of year	2013-12-31	$9,063,591
Value of interest in common/collective trusts at beginning of year	2013-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2013-12-31	$-5,469
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2013-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2013-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2013-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2013-12-31	$8,410,081
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2013-12-31	$7,317,214
Net investment gain/loss from pooled separate accounts	2013-12-31	$487,544
Net investment gain or loss from common/collective trusts	2013-12-31	$53,775
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2013-12-31	No
Was there a failure to transmit to the plan any participant contributions	2013-12-31	No
Has the plan failed to provide any benefit when due under the plan	2013-12-31	No
Assets. Invements in employer securities at end of year	2013-12-31	$11,900,684
Assets. Invements in employer securities at beginning of year	2013-12-31	$7,375,366
Contributions received in cash from employer	2013-12-31	$5,909,529
Employer contributions (assets) at end of year	2013-12-31	$1,757,298
Employer contributions (assets) at beginning of year	2013-12-31	$2,561,379
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2013-12-31	$9,507,769
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2013-12-31	Yes
Liabilities. Value of benefit claims payable at end of year	2013-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2013-12-31	$108,564
Did the plan have assets held for investment	2013-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2013-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2013-12-31	No
Aggregate proceeds on sale of assets	2013-12-31	$13,362,313
Aggregate carrying amount (costs) on sale of assets	2013-12-31	$12,309,826
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2013-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2013-12-31	Disclaimer
Accountancy firm name	2013-12-31	BDO USA, LLP
Accountancy firm EIN	2013-12-31	135381590
2012 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2012 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2012-12-31	$1,898,403
Total unrealized appreciation/depreciation of assets	2012-12-31	$1,898,403
Total transfer of assets to this plan	2012-12-31	$1,614,322
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2012-12-31	$108,564
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2012-12-31	$106,883
Total income from all sources (including contributions)	2012-12-31	$17,833,054
Total loss/gain on sale of assets	2012-12-31	$409,928
Total of all expenses incurred	2012-12-31	$5,676,109
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2012-12-31	$5,284,146
Expenses. Certain deemed distributions of participant loans	2012-12-31	$136,468
Value of total corrective distributions	2012-12-31	$105,870
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2012-12-31	$10,897,528
Value of total assets at end of year	2012-12-31	$55,666,628
Value of total assets at beginning of year	2012-12-31	$41,893,680
Total of administrative expenses incurred including professional, contract, advisory and management fees	2012-12-31	$149,625
Total interest from all sources	2012-12-31	$248,587
Total dividends received (eg from common stock, registered investment company shares)	2012-12-31	$263,193
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2012-12-31	No
Was this plan covered by a fidelity bond	2012-12-31	Yes
Value of fidelity bond cover	2012-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2012-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2012-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2012-12-31	No
Contributions received from participants	2012-12-31	$7,341,914
Participant contributions at end of year	2012-12-31	$1,813,796
Participant contributions at beginning of year	2012-12-31	$1,689,006
Participant contributions at end of year	2012-12-31	$161,478
Participant contributions at beginning of year	2012-12-31	$73,094
Income. Received or receivable in cash from other sources (including rollovers)	2012-12-31	$960,985
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2012-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2012-12-31	$3,382
Other income not declared elsewhere	2012-12-31	$62,344
Administrative expenses (other) incurred	2012-12-31	$149,625
Total non interest bearing cash at end of year	2012-12-31	$115
Total non interest bearing cash at beginning of year	2012-12-31	$81
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2012-12-31	No
Value of net income/loss	2012-12-31	$12,156,945
Value of net assets at end of year (total assets less liabilities)	2012-12-31	$55,558,064
Value of net assets at beginning of year (total assets less liabilities)	2012-12-31	$41,786,797
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2012-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2012-12-31	No
Were any leases to which the plan was party in default or uncollectible	2012-12-31	No
Value of interest in registered invesment companies (eg mutual funds) at end of year	2012-12-31	$27,070,061
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2012-12-31	$19,459,276
Value of interest in pooled separate accounts at end of year	2012-12-31	$8,274,352
Value of interest in pooled separate accounts at beginning of year	2012-12-31	$6,367,094
Interest on participant loans	2012-12-31	$71,973
Interest earned on other investments	2012-12-31	$176,614
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2012-12-31	$8,410,081
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2012-12-31	$7,855,950
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2012-12-31	$3,271,082
Net investment gain/loss from pooled separate accounts	2012-12-31	$781,989
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2012-12-31	No
Was there a failure to transmit to the plan any participant contributions	2012-12-31	No
Has the plan failed to provide any benefit when due under the plan	2012-12-31	No
Assets. Invements in employer securities at end of year	2012-12-31	$7,375,366
Assets. Invements in employer securities at beginning of year	2012-12-31	$4,844,705
Contributions received in cash from employer	2012-12-31	$2,594,629
Employer contributions (assets) at end of year	2012-12-31	$2,561,379
Employer contributions (assets) at beginning of year	2012-12-31	$1,604,474
Income. Dividends from preferred stock	2012-12-31	$263,193
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2012-12-31	$5,284,146
Liabilities. Value of benefit claims payable at end of year	2012-12-31	$108,564
Liabilities. Value of benefit claims payable at beginning of year	2012-12-31	$103,501
Did the plan have assets held for investment	2012-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2012-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2012-12-31	No
Aggregate proceeds on sale of assets	2012-12-31	$1,371,196
Aggregate carrying amount (costs) on sale of assets	2012-12-31	$961,268
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2012-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2012-12-31	Disclaimer
Accountancy firm name	2012-12-31	BDO USA, LLP
Accountancy firm EIN	2012-12-31	135381590
2011 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2011 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2011-12-31	$478,758
Total unrealized appreciation/depreciation of assets	2011-12-31	$478,758
Total transfer of assets to this plan	2011-12-31	$12,950,990
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2011-12-31	$106,883
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2011-12-31	$178,878
Total income from all sources (including contributions)	2011-12-31	$8,344,318
Total loss/gain on sale of assets	2011-12-31	$436,376
Total of all expenses incurred	2011-12-31	$5,771,991
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2011-12-31	$5,446,747
Expenses. Certain deemed distributions of participant loans	2011-12-31	$33,236
Value of total corrective distributions	2011-12-31	$107,614
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2011-12-31	$7,824,496
Value of total assets at end of year	2011-12-31	$41,893,680
Value of total assets at beginning of year	2011-12-31	$26,442,358
Total of administrative expenses incurred including professional, contract, advisory and management fees	2011-12-31	$184,394
Total interest from all sources	2011-12-31	$256,786
Total dividends received (eg from common stock, registered investment company shares)	2011-12-31	$142,316
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2011-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2011-12-31	$142,316
Was this plan covered by a fidelity bond	2011-12-31	Yes
Value of fidelity bond cover	2011-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2011-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2011-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2011-12-31	No
Contributions received from participants	2011-12-31	$5,025,433
Participant contributions at end of year	2011-12-31	$1,689,006
Participant contributions at beginning of year	2011-12-31	$1,033,641
Participant contributions at end of year	2011-12-31	$73,094
Participant contributions at beginning of year	2011-12-31	$39,788
Income. Received or receivable in cash from other sources (including rollovers)	2011-12-31	$815,756
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2011-12-31	$3,382
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2011-12-31	$64,300
Other income not declared elsewhere	2011-12-31	$73,049
Administrative expenses (other) incurred	2011-12-31	$184,394
Total non interest bearing cash at end of year	2011-12-31	$81
Total non interest bearing cash at beginning of year	2011-12-31	$23
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2011-12-31	No
Value of net income/loss	2011-12-31	$2,572,327
Value of net assets at end of year (total assets less liabilities)	2011-12-31	$41,786,797
Value of net assets at beginning of year (total assets less liabilities)	2011-12-31	$26,263,480
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2011-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2011-12-31	No
Were any leases to which the plan was party in default or uncollectible	2011-12-31	No
Value of interest in registered invesment companies (eg mutual funds) at end of year	2011-12-31	$19,459,276
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2011-12-31	$8,851,581
Value of interest in pooled separate accounts at end of year	2011-12-31	$6,367,094
Value of interest in pooled separate accounts at beginning of year	2011-12-31	$5,928,338
Interest on participant loans	2011-12-31	$64,414
Interest earned on other investments	2011-12-31	$192,372
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2011-12-31	$7,855,950
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2011-12-31	$6,097,098
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2011-12-31	$-919,913
Net investment gain/loss from pooled separate accounts	2011-12-31	$52,450
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2011-12-31	Yes
Was there a failure to transmit to the plan any participant contributions	2011-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2011-12-31	No
Assets. Invements in employer securities at end of year	2011-12-31	$4,844,705
Assets. Invements in employer securities at beginning of year	2011-12-31	$4,347,821
Contributions received in cash from employer	2011-12-31	$1,983,307
Employer contributions (assets) at end of year	2011-12-31	$1,604,474
Employer contributions (assets) at beginning of year	2011-12-31	$144,068
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2011-12-31	$5,446,747
Liabilities. Value of benefit claims payable at end of year	2011-12-31	$103,501
Liabilities. Value of benefit claims payable at beginning of year	2011-12-31	$114,578
Did the plan have assets held for investment	2011-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2011-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2011-12-31	No
Aggregate proceeds on sale of assets	2011-12-31	$1,090,996
Aggregate carrying amount (costs) on sale of assets	2011-12-31	$654,620
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2011-12-31	No
Opinion of an independent qualified public accountant for this plan	2011-12-31	Unqualified
Accountancy firm name	2011-12-31	BDO USA, LLP
Accountancy firm EIN	2011-12-31	135381590
2010 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2010 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2010-12-31	$509,074
Total unrealized appreciation/depreciation of assets	2010-12-31	$509,074
Total transfer of assets to this plan	2010-12-31	$434,270
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2010-12-31	$178,878
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2010-12-31	$228,619
Total income from all sources (including contributions)	2010-12-31	$5,686,831
Total loss/gain on sale of assets	2010-12-31	$154,937
Total of all expenses incurred	2010-12-31	$3,404,891
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2010-12-31	$3,132,248
Expenses. Certain deemed distributions of participant loans	2010-12-31	$8,171
Value of total corrective distributions	2010-12-31	$114,578
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2010-12-31	$3,069,166
Value of total assets at end of year	2010-12-31	$26,442,358
Value of total assets at beginning of year	2010-12-31	$23,775,889
Total of administrative expenses incurred including professional, contract, advisory and management fees	2010-12-31	$149,894
Total interest from all sources	2010-12-31	$225,027
Total dividends received (eg from common stock, registered investment company shares)	2010-12-31	$67,944
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2010-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2010-12-31	$67,944
Was this plan covered by a fidelity bond	2010-12-31	Yes
Value of fidelity bond cover	2010-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2010-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2010-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2010-12-31	No
Contributions received from participants	2010-12-31	$2,335,062
Participant contributions at end of year	2010-12-31	$1,033,641
Participant contributions at beginning of year	2010-12-31	$928,969
Participant contributions at end of year	2010-12-31	$39,788
Participant contributions at beginning of year	2010-12-31	$102,745
Income. Received or receivable in cash from other sources (including rollovers)	2010-12-31	$266,129
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2010-12-31	$64,300
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2010-12-31	$228,619
Other income not declared elsewhere	2010-12-31	$54,306
Administrative expenses (other) incurred	2010-12-31	$149,894
Total non interest bearing cash at end of year	2010-12-31	$23
Total non interest bearing cash at beginning of year	2010-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2010-12-31	No
Value of net income/loss	2010-12-31	$2,281,940
Value of net assets at end of year (total assets less liabilities)	2010-12-31	$26,263,480
Value of net assets at beginning of year (total assets less liabilities)	2010-12-31	$23,547,270
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2010-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2010-12-31	No
Were any leases to which the plan was party in default or uncollectible	2010-12-31	No
Value of interest in registered invesment companies (eg mutual funds) at end of year	2010-12-31	$8,851,581
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2010-12-31	$7,612,375
Value of interest in pooled separate accounts at end of year	2010-12-31	$5,928,338
Value of interest in pooled separate accounts at beginning of year	2010-12-31	$4,937,556
Interest on participant loans	2010-12-31	$46,820
Interest earned on other investments	2010-12-31	$178,207
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2010-12-31	$6,097,098
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2010-12-31	$6,332,578
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2010-12-31	$1,055,708
Net investment gain/loss from pooled separate accounts	2010-12-31	$550,669
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2010-12-31	Yes
Was there a failure to transmit to the plan any participant contributions	2010-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2010-12-31	No
Assets. Invements in employer securities at end of year	2010-12-31	$4,347,821
Assets. Invements in employer securities at beginning of year	2010-12-31	$3,765,958
Contributions received in cash from employer	2010-12-31	$467,975
Employer contributions (assets) at end of year	2010-12-31	$144,068
Employer contributions (assets) at beginning of year	2010-12-31	$95,708
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2010-12-31	$3,132,248
Liabilities. Value of benefit claims payable at end of year	2010-12-31	$114,578
Liabilities. Value of benefit claims payable at beginning of year	2010-12-31	$0
Did the plan have assets held for investment	2010-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2010-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2010-12-31	No
Aggregate proceeds on sale of assets	2010-12-31	$791,362
Aggregate carrying amount (costs) on sale of assets	2010-12-31	$636,425
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2010-12-31	No
Opinion of an independent qualified public accountant for this plan	2010-12-31	Unqualified
Accountancy firm name	2010-12-31	BDO USA, LLP
Accountancy firm EIN	2010-12-31	135381590
2009 : THE MASTEC, INC. 401(K) RETIREMENT PLAN 2009 401k financial data
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2009-12-31	$0

Form 5500 Responses for THE MASTEC, INC. 401(K) RETIREMENT PLAN

2022: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2022 form 5500 responses
2022-01-01	Type of plan entity	Single employer plan
2022-01-01	Submission has been amended	No
2022-01-01	This submission is the final filing	No
2022-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2022-01-01	Plan is a collectively bargained plan	No
2022-01-01	Plan funding arrangement – Trust	Yes
2022-01-01	Plan benefit arrangement - Trust	Yes
2021: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2021 form 5500 responses
2021-01-01	Type of plan entity	Single employer plan
2021-01-01	Submission has been amended	No
2021-01-01	This submission is the final filing	No
2021-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2021-01-01	Plan is a collectively bargained plan	No
2021-01-01	Plan funding arrangement – Trust	Yes
2021-01-01	Plan benefit arrangement - Trust	Yes
2020: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2020 form 5500 responses
2020-01-01	Type of plan entity	Single employer plan
2020-01-01	Submission has been amended	No
2020-01-01	This submission is the final filing	No
2020-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2020-01-01	Plan is a collectively bargained plan	No
2020-01-01	Plan funding arrangement – Trust	Yes
2020-01-01	Plan benefit arrangement - Trust	Yes
2019: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2019 form 5500 responses
2019-01-01	Type of plan entity	Single employer plan
2019-01-01	Submission has been amended	No
2019-01-01	This submission is the final filing	No
2019-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2019-01-01	Plan is a collectively bargained plan	No
2019-01-01	Plan funding arrangement – Trust	Yes
2019-01-01	Plan benefit arrangement - Trust	Yes
2018: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2018 form 5500 responses
2018-01-01	Type of plan entity	Single employer plan
2018-01-01	Submission has been amended	No
2018-01-01	This submission is the final filing	No
2018-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2018-01-01	Plan is a collectively bargained plan	No
2018-01-01	Plan funding arrangement – Trust	Yes
2018-01-01	Plan benefit arrangement - Trust	Yes
2017: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2017 form 5500 responses
2017-01-01	Type of plan entity	Single employer plan
2017-01-01	Submission has been amended	No
2017-01-01	This submission is the final filing	No
2017-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2017-01-01	Plan is a collectively bargained plan	No
2017-01-01	Plan funding arrangement – Trust	Yes
2017-01-01	Plan benefit arrangement - Trust	Yes
2016: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2016 form 5500 responses
2016-01-01	Type of plan entity	Single employer plan
2016-01-01	Submission has been amended	No
2016-01-01	This submission is the final filing	No
2016-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2016-01-01	Plan is a collectively bargained plan	No
2016-01-01	Plan funding arrangement – Trust	Yes
2016-01-01	Plan benefit arrangement - Trust	Yes
2015: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2015 form 5500 responses
2015-01-01	Type of plan entity	Single employer plan
2015-01-01	Submission has been amended	No
2015-01-01	This submission is the final filing	No
2015-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2015-01-01	Plan is a collectively bargained plan	No
2015-01-01	Plan funding arrangement – Trust	Yes
2015-01-01	Plan benefit arrangement - Trust	Yes
2014: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2014 form 5500 responses
2014-01-01	Type of plan entity	Single employer plan
2014-01-01	Submission has been amended	No
2014-01-01	This submission is the final filing	No
2014-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2014-01-01	Plan is a collectively bargained plan	No
2014-01-01	Plan funding arrangement – Trust	Yes
2014-01-01	Plan benefit arrangement - Trust	Yes
2013: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2013 form 5500 responses
2013-01-01	Type of plan entity	Single employer plan
2013-01-01	Submission has been amended	No
2013-01-01	This submission is the final filing	No
2013-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2013-01-01	Plan is a collectively bargained plan	No
2013-01-01	Plan funding arrangement – Insurance	Yes
2013-01-01	Plan funding arrangement – Trust	Yes
2013-01-01	Plan benefit arrangement – Insurance	Yes
2013-01-01	Plan benefit arrangement - Trust	Yes
2012: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2012 form 5500 responses
2012-01-01	Type of plan entity	Single employer plan
2012-01-01	Submission has been amended	No
2012-01-01	This submission is the final filing	No
2012-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2012-01-01	Plan is a collectively bargained plan	No
2012-01-01	Plan funding arrangement – Insurance	Yes
2012-01-01	Plan funding arrangement – Trust	Yes
2012-01-01	Plan benefit arrangement – Insurance	Yes
2012-01-01	Plan benefit arrangement - Trust	Yes
2011: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2011 form 5500 responses
2011-01-01	Type of plan entity	Single employer plan
2011-01-01	Submission has been amended	No
2011-01-01	This submission is the final filing	No
2011-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2011-01-01	Plan is a collectively bargained plan	No
2011-01-01	Plan funding arrangement – Insurance	Yes
2011-01-01	Plan funding arrangement – Trust	Yes
2011-01-01	Plan benefit arrangement – Insurance	Yes
2011-01-01	Plan benefit arrangement - Trust	Yes
2010: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2010 form 5500 responses
2010-01-01	Type of plan entity	Single employer plan
2010-01-01	Submission has been amended	No
2010-01-01	This submission is the final filing	No
2010-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2010-01-01	Plan is a collectively bargained plan	No
2010-01-01	Plan funding arrangement – Insurance	Yes
2010-01-01	Plan funding arrangement – Trust	Yes
2010-01-01	Plan benefit arrangement – Insurance	Yes
2010-01-01	Plan benefit arrangement - Trust	Yes
2009: THE MASTEC, INC. 401(K) RETIREMENT PLAN 2009 form 5500 responses
2009-01-01	Type of plan entity	Single employer plan
2009-01-01	Submission has been amended	No
2009-01-01	This submission is the final filing	No
2009-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2009-01-01	Plan is a collectively bargained plan	No
2009-01-01	Plan funding arrangement – Insurance	Yes
2009-01-01	Plan funding arrangement – Trust	Yes
2009-01-01	Plan benefit arrangement – Insurance	Yes
2009-01-01	Plan benefit arrangement - Trust	Yes

Insurance Providers Used on plan

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

040352

Policy instance

Insurance contract or identification number	040352
Number of Individuals Covered	0
Insurance policy start date	2013-01-01
Insurance policy end date	2013-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

040352

Policy instance

Insurance contract or identification number	040352
Number of Individuals Covered	10463
Insurance policy start date	2012-01-01
Insurance policy end date	2012-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

040352

Policy instance

Insurance contract or identification number	040352
Number of Individuals Covered	9717
Insurance policy start date	2011-01-01
Insurance policy end date	2011-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

040352

Policy instance

Insurance contract or identification number	040352
Number of Individuals Covered	6053
Insurance policy start date	2010-01-01
Insurance policy end date	2010-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

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Company Name:	MASTEC, INC.
Employer identification number (EIN):	650829355
NAIC Classification:	238900

Jurisdiction of Incorporation:	Florida Department of State Division of Corporations
Incorporation Date:	1998-04-08
Company Identification Number:	P98000032690
Legal Registered Office Address:	1201 HAYS ST TALLAHASSEE 32301