JOINT FILING AGREEMENT

Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including any amendments thereto, the “13D”) with respect to the shares of common stock, par value $0.10 per share, of MasTec, Inc., a Florida corporation. This Joint Filing Agreement shall be filed as an Exhibit to the 13D. The undersigned acknowledge that each shall be responsible for the timely filing of any amendments to such joint filing and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others.

This Joint Filing Agreement may be executed in any number of counterparts, each of which shall be deemed an original, but all of which, taken together, shall constitute one and the same instrument.

EXECUTED as of this 18^th day of December, 2015.

/s/ Xxxxx Mas
Name:		Xxxxx Mas
XXXXX MAS HOLDINGS I, LLC

By: /s/ Xxxxx Mas

Name:		Xxxxx Mas
Title:
XXXXX MAS HOLDINGS, LLC

By: /s/ Xxxxx Mas

Name:		Xxxxx Mas
Title:
XXXX MAS IRREVOCABLE TRUST

By: /s/ Xxxxx Mas

Name:		Xxxxx Mas
Title:		Trustee
MAS EQUITY PARTNERS III, LLC

By: /s/ Xxxxx Mas

Name:		Xxxxx Mas
Title:
MAS EQUITY PARTNERS, LLC

By: /s/ Xxxxx Mas

Name:		Xxxxx Mas
Title:
MAS FAMILY FOUNDATION, INC.

By: /s/ Xxxxx Mas

Name:		Xxxxx Mas
Title:		President