Document:

EX-10.3

 Exhibit 10.3 

EMPLOYMENT AGREEMENT 

This Employment Agreement (the “Agreement”), by and among Quanta Services, Inc., a Delaware corporation
(“Employer”), and Nick Grindstaff (“Employee”), is hereby entered into as of this 8th day of March, 2000. 

R E C I T A L S 

A. As of the date of this Agreement, Employer is engaged primarily in the business of specialty electrical contracting for
electric utilities, telecommunications and cable television providers, and transportation, commercial and industrial customers. 

B. Employee is employed hereunder by Employer in a confidential relationship wherein Employee, in the course of
Employee’s employment with Employer, has and will continue to become familiar with and aware of non-public information of Employer, including but not limited to, Employer’s customers, specific manner of doing business, including the
processes, techniques and trade secrets utilized by Employer, and future plans with respect thereto (“Confidential Information”), all of which has been and will be established and maintained at great expense to Employer; this
information is a trade secret and constitutes the valuable goodwill of Employer. 
 A G R E E M E N T S 

In consideration of the mutual promises, terms, covenants and conditions set forth herein and the performance of each, the
parties hereto hereby agree as follows: 
 1. Employment and Duties.  

(a) Employer hereby employs Employee as Treasurer of the Employer. As such, Employee shall have responsibilities, duties and
authority reasonably accorded to and expected of a Treasurer of the Employer and will report directly to the Chief Financial Officer of Employer. Employee hereby accepts this employment upon the terms and conditions herein contained and, subject to
Paragraph 1(c) hereof, agrees to devote Employee’s time, attention and efforts to promote and further the business of Employer. 

(b) Employee shall faithfully adhere to, execute and fufill all policies established by the Board of Directors of Employer
(the “Board”). 

 (c) Employee shall not, during the term of his employment hereunder, be engaged
in any other business activity pursued for gain, profit or other pecuniary advantage if such activity interferes with Employee’s duties and responsibilities hereunder. The foregoing limitations shall not be construed as prohibiting Employee
from making personal investments in such form or manner as will neither require Employee’s services in the operation or affairs of the companies or enterprises in which such investments are made nor violate the terms of paragraph 4 hereof. 

2. Compensation. 
 For all
services rendered by Employee, Employer shall compensate Employee as follows: 
 (a) Base Salary. The base salary
payable to Employee shall be $100,000 per year, payable on a regular basis in accordance with Employer’s standard payroll procedures but not less than monthly. On at least an annual basis, the Board will review Employee’s performance and
may make increases to such base salary if, in its discretion, any such increase is warranted. Such recommended increase would, in all likelihood, require approval by the Board or a duly constituted committee thereof. 

(b) Incentive Bonus Plan. Employee shall participate in Employer’s Management Incentive Bonus Plan for the fiscal
year ending December 31, 2000. The maximum bonus for which Employee will be eligible pursuant to such plan will be 100% of Employee’s base salary. Employee will participate in future incentive bonus plans as determined by the Board or a
duly constituted committee thereof. 
 (c) Executive Perquisites, Benefits, and Other Compensation. Employee shall be
entitled to receive additional benefits and compensation from Employer in such form and to such extent as specified below: 

(i) Payment of all premiums for coverage for Employee and Employee’s dependent family members under
health, hospitalization, disability, dental, life and other insurance plans that Employer may have in effect from time to time. 

(ii) Reimbursement for all business travel and other out-of-pocket expenses reasonably incurred by Employee in
the performance of Employee’s services pursuant to this Agreement. All reimbursable expenses shall be appropriately documented in reasonable detail by Employee upon submission of any request for reimbursement, and in a format and manner
consistent with Employer’s expense reporting policy. 
 (iii) Employer shall provide Employee with other
executive perquisites as may be available to or deemed appropriate for Employee by the Board and participation in all other Employer-wide employee benefits as available from time to time. 

3. [Intentionally left blank.] 

  
 -2- 

 4. Non-Competition. 

(a) Employee hereby agrees that Employee will not, during the period of Employee’s employment with Employer, and for a
period of one (1) year following the date Employee ceases to be employed by Employer or any direct or indirect subsidiary of Employer, for any reason whatsoever, directly or indirectly, for himself or on behalf of or in conjunction with any
other person, persons, company, partnership, corporation or business of whatever nature: 
 (i) engage, as an
officer, director, shareholder, owner, partner, joint venturer or in a managerial capacity, whether as an employee, independent contractor, consultant or advisor or as a sales representative, in any specialty electrical contracting business for
electric utilities, telecommunications and cable television providers, and transportation, commercial and industrial customers, within the United States or within 100 miles of any other geographic area in which Employer or any of Employer’s
direct or indirect subsidiaries conducts business, including any territory serviced by Employer or any of its subsidiaries (the “Territory”); 

(ii) call upon any person who is, at that time, within the Territory, an employee of Employer (including the
subsidiaries thereof) for the purpose or with the intent of enticing such employee away from or out of the employ of Employer (including the direct or indirect subsidiaries thereof); 

(iii) call upon any person or entity which is, at that time, or which has been, within one (1) year prior
to that time, a customer of Employer (including the direct or indirect subsidiaries thereof) within the Territory for the purpose of soliciting or selling products or services in direct competition with Employer or any subsidiary of Employer within
the Territory; or 
 (iv) call upon any prospective acquisition candidate, on Employee’s own behalf or
on behalf of any competitor, which candidate was, to Employee’s actual knowledge after due inquiry, either called upon by Employer including the direct or indirect subsidiaries thereof) or for which Employer made an acquisition analysis, for
the purpose of acquiring such entity. 
 Notwithstanding the above, the foregoing covenant shall not be deemed to prohibit
Employee from acquiring as an investment not more than two percent (2%)of the capital stock of a competing business, whose stock is traded on a national securities exchange or over-the-counter. 

(b) Because of the difficulty of measuring economic losses to Employer as a result of a breach of the foregoing covenant, and
because of the immediate and irreparable damage that could be caused to Employer for which it would have no other adequate remedy, Employee agrees that the foregoing covenant may be enforced by Employer in the event of breach by him, by injunctions
and restraining orders. 

  
 -3- 

 (c) It is agreed by the parties that the foregoing covenants in this Paragraph 4
impose a reasonable restraint on Employee in light of the activities and business of Employer (including Employer’s direct and indirect subsidiaries) on the date of the execution of this Agreement and the current plans of Employer (including
Employer’s direct and indirect subsidiaries); but it is also the intent of Employer and Employee that such covenants be construed and enforced in accordance with the changing activities, business and locations of Employer (including
Employer’s direct and indirect subsidiaries) throughout the term of this Agreement, whether before or after the date of termination of the employment of Employee. For example, if, during the term of this Agreement, Employer (including
Employer’s direct and indirect subsidiaries) engages in new and different activities, enters a new business or establishes new locations for its current activities or business in addition to or other than the activities or business enumerated
under the Recitals above or the locations currently established therefor, then Employee will be precluded from soliciting the customers or employees of such new activities or business or from such new location and from directly competing with such
new business within 100 miles of its then-established operating location(s) through the term of this Agreement. 
 It is
further agreed by the parties hereto that, in the event that Employee shall cease to be employed hereunder, and shall enter into a business or pursue other activities not in competition with Employer (including Employer’s direct and indirect
subsidiaries), or similar activities, or business in locations the operation of which, under such circumstances, does not violate clause (i) of this Paragraph 4, and in any event such new business, activities or location are not in violation of
this Paragraph 4 or of employee’s obligations under this Paragraph 4, if any, Employee shall not be chargeable with a violation of this Paragraph 4 if Employer (including Employer’s direct and indirect subsidiaries) shall thereafter enter
the same, similar or a competitive (i) business, (ii) course of activities or (iii)location, as applicable. 
 (d)
The covenants in this Paragraph 4 are severable and separate, and the unenforceability of any specific covenant shall not affect the provisions of any other covenant. Moreover, in the event any court of competent jurisdiction shall determine that
the scope, time or territorial restrictions set forth are unreasonable, then it is the intention of the parties that such restrictions been forced to the fullest extent which the court deems reasonable, and the Agreement shall be reformed in
accordance therewith. 
 (e) All of the covenants in this Paragraph 4 shall be construed as an agreement independent of any
other provision in this Agreement, and the existence of any claim or cause of action of Employee against Employer, whether predicated on this Agreement or otherwise, shall not constitute a defense to the enforcement by Employer of such covenants.

 (f) Notwithstanding any other provision of this Agreement, if Employee’s employment is terminated by Employer for
other than good cause, then no non-competition provision shall be enforceable for any period of time during which or for which the Employee is not receiving or has not received severance compensation. 

  
 -4- 

 5. Place of Performance. 

Nothing contained herein shall be deemed to require Employee to relocate from Employee’s present residence to another
geographic location in order to carry out Employee’s duties and responsibilities under this Agreement. 
 6. Term; Termination;
Rights on Termination. 
 The term of this Agreement shall begin on the date hereof and continue for three (3) years
(the “Term”), and, unless terminated sooner as herein provided, shall continue thereafter on a year-to-year basis on the same terms and conditions contained herein in effect as of the time of renewal. This Agreement and Employee’s
employment may be terminated in any one of the followings ways: 
 (a) Death. The death of Employee shall immediately
terminate this Agreement with no severance compensation due to Employee’s estate. 
 (b) Disability. If, as a
result of incapacity due to physical or mental illness or injury, Employee shall have been absent from Employee’s full-time duties hereunder for four (4) consecutive months, then thirty (30) days after receiving written notice (which
notice may occur before or after the end of such four (4) month period, but which shall not be effective earlier than the last day of such four (4) month period), Employer may terminate Employee’s employment hereunder provided
Employee is unable to resume Employee’s full-time duties at the conclusion of such notice period. Also, Employee may terminate Employee’s employment hereunder if his or her health should become impaired to an extent that makes the
continued performance of Employee’s duties hereunder hazardous to Employee’s physical or mental health or life, provided that Employee shall have furnished Employer with a written statement from a qualified doctor to such effect and
provided, further, that, at Employer’s request made within thirty(30) days of the date of such written statement, Employee shall submit to an examination by a doctor selected by Employer who is reasonably acceptable to Employee or
Employee’s doctor and such doctor shall have concurred in the conclusion of Employee’s doctor. In the event this Agreement is terminated as a result of Employee’s disability, Employee shall receive from Employer, in a lump-sum payment
due within ten (10) days of the effective date of termination, the base salary at the rate then in effect for whatever time period is remaining under the Term of this Agreement or for one (1) year, whichever amount is greater. 

(c) Good Cause. Employer may terminate the Agreement ten (10) days after delivery of written notice to Employee for
good cause, which shall be: (1) Employee’s willful, material and irreparable breach of this Agreement; (2) Employee’s gross negligence in the performance or intentional nonperformance or inattention continuing for ten
(10) days after receipt of written notice of need to cure of any of Employee’s material duties and responsibilities hereunder; (3) Employee’s willful dishonesty, fraud or material misconduct with respect to the business or
affairs of Employer; (4) Employee’s conviction of a felony crime; or (5) chronic alcohol abuse or illegal drug abuse by Employee. In the event of a termination for good cause, as enumerated above, Employee shall have no right to any
severance compensation. 

  
 -5- 

 (d) Without Good Cause. At any time after the commencement of employment,
either Employee or Employer may, without good cause, terminate this Agreement and Employee’s employment, effective thirty (30) days after written notice is provided to the other party. Should Employee be terminated by Employer without good
cause during the Term, Employee shall receive from Employer, in a lump-sum payment due on the effective date of termination, the base salary at the rate then in effect for whatever time period is remaining under the Term of this Agreement or for one
(1) year, whichever amount is greater. If Employee resigns or otherwise terminates Employee’s employment without cause pursuant to this Paragraph 6(d), Employee shall receive no severance compensation. 

(e) Change in Control of Employer. In the event of a “Change in Control of Employer” (as defined below) during
the Term, refer to Paragraph 13 below. 
 Upon termination of this Agreement for any reason provided above, Employee shall
be entitled to receive all compensation earned and all benefits and reimbursements due through the effective date of termination. Additional compensation subsequent to termination, if any, will be due and payable to Employee only to the extent and
in the manner expressly provided above or in Paragraph 13 hereof. All other rights and obligations of Employer and Employee under this Agreement shall cease as of the effective date of termination, except that Employer’s obligations under
Paragraph 10 hereof and Employee’s obligations under Paragraphs 4, 7, 8, 9, 11 and 17 hereof shall survive such termination in accordance with their terms. 

If termination of Employee’s employment arises out of Employer’s failure to pay Employee on a timely basis the
amounts to which he is entitled under this Agreement or as a result of any other breach of this Agreement by Employer, as determined by a court of competent jurisdiction or pursuant to the provisions of Paragraph 17 below, Employer shall pay all
amounts and damages to which Employee may be entitled as a result of such breach, including interest thereon and all reasonable legal fees and expenses and other costs incurred by Employee to enforce Employee’s rights hereunder. 

7. Return of Company Property. 

All records, designs, patents, business plans, financial statements, manuals, memoranda, lists and other property delivered to
or compiled by Employee by or on behalf of Employer, or its representatives, vendors or customers which pertain to the business of Employer shall be and remain the property of Employer, and be subject at all times to its discretion and control.
Likewise, all correspondence, reports, records, charts, advertising materials, and other similar data pertaining to the business, activities or future plans of Employer which is collected by Employee shall be delivered promptly to Employer without
request by it upon termination of Employee’s employment. 

  
 -6- 

 8. Inventions. 

Employee shall disclose promptly to Employer any and all significant conceptions and ideas for inventions, improvements and
valuable discoveries, whether patentable or not, which are conceived or made by Employee, solely or jointly with another, during the period of employment or within one (1) year hereafter, and which are directly related to the business or
activities of Employer and which Employee conceives as a result of Employee’s employment by Employer. Employee hereby assigns and agrees to assign all of Employee’s interests therein to Employer or its nominee. Whenever requested to do so
by Employer, Employee shall execute any and all applications, assignments or other instruments that Employer shall deem necessary to apply for and obtain Letters Patent of the United States or any foreign country or to otherwise protect
Employer’s interest therein 
 9. Trade Secrets. 

Employee agrees that he will not, during or after the Term of this Agreement with Employer, disclose the specific terms of
Employer’s or its subsidiaries’ relationships or agreements with its significant vendors or customers or any other significant and material trade secret of Employer or its subsidiaries, whether in existence or proposed, to any person,
firm, partnership, corporation or business for any reason or purpose whatsoever other than in the course of performing Employee’s duties hereunder. 

10. Indemnification. 

In the event Employee is made a party to any threatened, pending or completed action, suit or proceeding, whether civil,
criminal, administrative or investigative (other than an action by Employer against Employee), by reason of the fact that Employee is or was performing services under this Agreement, then Employer shall indemnify Employee against all expenses
(including attorneys’ fees), judgments, fines and amounts paid in settlement, as actually and reasonably incurred by Employee in connection therewith. In the event that both Employee and Employer are made a party to the same third-party action,
complaint, suit or proceeding, Employer agrees to engage competent legal representation, and Employee agrees to use the same representation, provided that if counsel selected by Employer shall have a conflict of interest that prevents such counsel
from representing Employee, Employee may engage separate counsel and Employer shall pay all attorneys’ fees of such separate counsel. Further, while Employee is expected at all times to use Employee’s best efforts to faithfully discharge
his duties under this Agreement, Employee cannot be held liable to Employer for errors or omissions made in good faith where Employee has not exhibited gross, willful or wanton negligence or misconduct or performed criminal and fraudulent acts which
materially damage the business of Employer. 
 11. No Prior Agreements. 

Employee hereby represents and warrants to Employer that the execution of this Agreement by Employee and his employment by
Employer and the performance of Employee’s duties hereunder will not violate or be a breach of any agreement with a former employer, client or any other person or entity. Further, Employee agrees to indemnify Employer for any claim, including
but not limited to attorneys’ fees and expenses of investigation, by any such third party that such third party may now have or may hereafter come to have against Employer based upon or arising out of any noncompetition agreement, invention or
secrecy agreement between Employee and such third party which was in existence as of the date of this Agreement. 

  
 -7- 

 12. Assignment; Binding Effect. 

Employee understands that he has been selected for employment by Employer on the basis of Employee’s personal
qualifications, experience and skills. Employee, therefore, shall not assign all or any portion of Employee’s performance under this Agreement. Subject to the preceding two (2) sentences and the express provisions of Paragraph 13 below,
this Agreement shall be binding upon, inure to the benefit of and be enforceable by the parties hereto and the irrespective heirs, legal representatives, successors and assigns. 

13. Change in Control. 

(a) Employee understands and acknowledges that Employer may be merged or consolidated with or into another entity and that such
entity shall automatically succeed to the rights and obligations of Employer hereunder or that Employer may undergo another type of Change in Control. In the event such a merger or consolidation or other Change in Control is initiated prior to the
end of the Term, then the provisions of this Paragraph 13 shall be applicable. 
 (b) In the event of a pending Change in
Control wherein Employer and Employee have not received written notice at least five (5) business days prior to the anticipated closing date of the transaction giving rise to the Change in Control from the successor to all or a substantial
portion of Employer’s business and/or assets that such successor is willing as of the closing to assume and agree to perform Employer’s obligations under this Agreement in the same manner and to the same extent that Employer is hereby
required to perform, then such Change in Control shall be deemed to be a termination of this Agreement by Employer without good cause during the Term and the applicable portions of Paragraph 6(d) will apply; however, under such circumstances, the
amount of the lump-sum severance payment due to Employee shall be triple the amount calculated under the terms of Paragraph 6(d) and the noncompetition provisions of Paragraph 4 shall not apply. 

(c) For purposes of applying Paragraph 6 hereof under the circumstances described in (b) above, the effective date of
termination will be the closing date of the transaction giving rise to the Change in Control and all compensation, reimbursements and lump-sum payments due Employee must be paid in full by Employer at or prior to such closing. Further, Employee will
be given sufficient time and opportunity to elect whether to exercise all or any of Employee’s vested options to purchase Employer Common Stock, including any options with accelerated vesting under the provisions of Employer’s 1997 Stock
Option Plan, such that Employee may convert the options to shares of Employer Common Stock at or prior to the closing of the transaction giving rise to the Change in Control, if Employee so desires. 

  
 -8- 

 (d) In the event that a successor in a pending Change in Control gives notice
pursuant to Paragraph 13(b) that it will assume Employer’s obligations under this Agreement and at the time of or within twelve (12) months following such Change in Control either (i) Employee is offered a Lesser Position (as
hereinafter defined) in replacement of the position held by him immediately prior to the Change in Control or (ii) Employee is terminated other than pursuant to Paragraph 6(c) of this Agreement, then effective as of the date such Lesser
Position is offered to Employee or the effective date of such termination, respectively, then such event shall be deemed to be a termination of this Agreement by Employer without good cause during the Term and the applicable portions of Paragraph
6(d) will apply; however, undersuch circumstances, the amount of the lump-sum severance payment due to the Employee shall be triple the amount calculated under the terms of Paragraph 6(d) and the noncompetition provisions of Paragraph 4 shall not
apply. 
 (e) A “Change in Control” shall be deemed to have occurred if: 

(i) any person or entity, other than Employer or an employee benefit plan of Employer, acquires directly or
indirectly the Beneficial Ownership (as defined in Section 13(d) of the Securities Exchange Act of 1934, as amended) of any voting security of Employer and immediately after such acquisition such person or entity is, directly or indirectly, the
Beneficial Owner of voting securities representing 50% or more of the total voting power of all of the then-outstanding voting securities of Employer; 

(ii) the following individuals no longer constitute a majority of the members of the Board: (A) the
individuals who, as of the closing date of Employer’s initial public offering, constitute the Board (the “Original Directors”); (B) the individuals who thereafter are elected to the Board and whose election, or nomination for
election, to the Board was approved by a vote of at least two-thirds (2/3) of the Original Directors then still in office (such directors becoming “Additional Original Directors” immediately following their election); and (C) the
individuals who are elected to the Board and whose election, or nomination for election, to the Board was approved by a vote of at least two-thirds (2/3) of the Original Directors and Additional Original Directors then still in office (such
directors also becoming “Additional Original Directors” immediately following their election). 

(iii) the stockholders of Employer shall approve a merger, consolidation, recapitalization or reorganization of
Employer, a reverse stock split of outstanding voting securities, or consummation of any such transaction if stockholder approval is not obtained, other than any such transaction which would result in at least 75% of the total voting power
represented by the voting securities of the surviving entity outstanding immediately after such transaction being Beneficially Owned by at least 75% of the holders of outstanding voting securities of Employer immediately prior to the transaction,
with the voting power of each such continuing holder relative to other such continuing holders not substantially altered in the transaction; or 

(iv) the stockholders of Employer shall approve a plan of complete liquidation of Employer or an agreement for
the sale or disposition by Employer of all or a substantial portion of Employer’s assets (i.e., 50% or more of the total assets of Employer). 

  
 -9- 

 (f) “Lesser Position” shall mean a new position or a change in
the Employee’s Position, which, compared with Employee’s Position with Employer immediately prior to the Change in Control, (i) offers a lower level of compensation (including base salary, fringe benefits and target bonuses under any
corporate-performance based bonus or incentive programs), or (ii) materially reduces Employee’s duties or level of responsibility, or (iii) requires Employee to relocate his principal residence. 

(g) Employee shall be reimbursed by Employer or its successor for all excise taxes that Employee incurs under Section 4999
of the Internal Revenue Code of 1986, as amended, as a result of any Change in Control. In addition, Employee shall be reimbursed by Employer or its successor for all federal, state and local income taxes and additional excise taxes attributable to
the payment pursuant to the preceding sentence and the payment pursuant to this sentence. Such amount will be due and payable by Employer or its successor within ten (10) days after Employee delivers a written request for reimbursement
accompanied by a copy of Employee’s tax return(s) showing the excise tax actually incurred by Employee. Such amount shall not be subject to offset or reduction for any amount owed or claimed to be owed to Employer or its successor by Employee.
If not paid within ten (10) days from date of demand, the amount due under this subsection shall bear interest at the maximum non-usurious rate allowed by law from the date of demand to the date of payment. 

14. Complete Agreement. 

This Agreement supersedes any other agreements or understandings, written or oral, between Employer and Employee, and Employee
has no oral representations, understandings or agreements with Employer or any of its officers, directors or representatives covering the same subject matter as this Agreement. This written Agreement is the final, complete and exclusive statement
and expression of the agreement between Employer and Employee and of all the terms of this Agreement, and it cannot be varied, contradicted or supplemented by evidence of any prior or contemporaneous oral or written agreements. This written
Agreement may not be later modified except by a written instrument signed by a duly authorized officer of Employer and Employee, and no term of this Agreement may be waived except by a written instrument signed by the party waiving the benefit of
such term 
 15. Notice. 

Whenever any notice is required hereunder, it shall be given in writing addressed as follows: 

 

			
	        To Employer:	  	Quanta Services, Inc.
		  	1360 Post Oak Boulevard, Suite 2100
		  	Houston, Texas 77056
		  	Attention: General Counsel
		
	        To Employee:	  	319 El Toro
		  	Webster, Texas 77598

  
 -10- 

 Notice shall be deemed given and effective three (3) days after the deposit in the U.S. mail
of a writing addressed as above and sent first class mail, certified, return receipt requested, or when actually received. Either party may change the address for notice by notifying the other party of such change in accordance with this paragraph

 16. Severability, Headings. 

If any portion of this Agreement is held invalid or inoperative, the other portions of this Agreement shall be deemed valid and
operative and, so far as is reasonable and possible, effect shall be given to the intent manifested by the portion held invalid or inoperative. The paragraph headings herein are for reference purposes only and are not intended in any way to
describe, interpret, define or limit the extent or intent of the Agreement or of any part hereof. 
 17. Arbitration. 

Any unresolved dispute or controversy arising under or in connection with this Agreement shall be settled exclusively by
arbitration, conducted before a panel of three (3) arbitrators in Houston, Texas, in accordance with the National Rules of the American Arbitration Association for the Resolution of Employment Disputes in effect on the date of the event giving
rise to the claim or the controversy. The arbitrators shall not have the authority to add to, detract from or modify any provision hereof nor to award punitive damages to any injured party. The arbitrators shall have the authority to order back-pay,
severance compensation, vesting of options (or cash compensation in lieu of vesting of options), reimbursement of costs, including those incurred to enforce this Agreement, and interest thereon in the event the arbitrators determine that Employee
was terminated without disability or good cause, as defined in Paragraphs 6(b) and 6(c) hereof, respectively, or that Employer has otherwise materially breached this Agreement. A decision by a majority of the arbitration panel shall be final and
binding. Judgment may be entered on the arbitrators’ award in any court having jurisdiction. The direct expense of any arbitration proceeding shall be borne by Employer. 

18. Governing Law. 

This Agreement shall in all respects be construed according to the laws of the State of Texas. 

19. Counterparts. 

This Agreement may be executed simultaneously in two (2) or more counterparts, each of which shall be deemed an original
and all of which together shall constitute but one and the same instrument. 
 REMAINDER OF PAGE INTENTIONALLY LEFT BLANK 

  
 -11- 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the day
and year first above written. 
  

			
	QUANTA SERVICES, INC.
		
	By:	 	 /s/ John R. Colson

	Name:	 	John R.Colson
	Title:	 	Chef Executive Officer
	
	 /s/ Nick Grindstaff

	Nick Grindstaff

 AMENDMENT NO. 1 

TO 
 EMPLOYMENT
AGREEMENT 
 THIS AMENDMENT NO. 1 to Employment Agreement dated effective March 8, 2000 (the
“Agreement”), by and between Quanta Services, Inc., a Delaware corporation (“Employer”), and Nick Grindstaff (“Employee”), is hereby entered into this 6th day of November, 2008. 

WHEREAS, Section 409A of the Internal Revenue Code of 1986, as amended, and the regulations promulgated thereunder
(collectively, “Section 409A”) require that payments of nonqualified deferred compensation to “specified employees” be delayed for six months from “separation from service” (as those terms are defined under
Section 409A); 
 WHEREAS, Employee is currently identified as a “specified employee” in accordance
with Section 409A; 
 WHEREAS, the Agreement provides for the payment of certain severance benefits upon
termination of service, which may be considered nonqualified deferred compensation subject to Section 409A; and 

WHEREAS, Employer and Employee desire to amend the terms of the Agreement to comply with Section 409A. 

NOW, THEREFORE, Employer and Employee agree as follows: 

1. A new paragraph (f) is added to Section 6 of the Agreement to read as follows: 

“(f) Compliance with Section 409A of the Code. Notwithstanding any other provision to the
contrary, if the Compensation Committee of the Board of Directors of the Employer (the “Committee”) determines in its discretion that severance payments due under this Agreement constitute “nonqualified deferred
compensation” subject to Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), and that the Employee is a “specified employee” as defined in Section 409A(a)(2)(B)(i) of the Code and the
regulations and other guidance issued thereunder, then such severance payments shall commence on the first payroll date of the seventh month following the month in which the Employee’s termination occurs (with the first such payment being a
lump sum equal to the aggregate severance payments the Employee would have received during the prior six-month period if no such delay had been imposed). For purposes of this Agreement, whether the Employee is a “specified employee” will
be determined in accordance with the written procedures adopted by the Committee which are incorporated by reference herein.” 

  
 - 1 - 

 2. Any provisions of the Agreement not specifically amended herein shall remain
in full force and effect. 
 IN WITNESS WHEREOF, the parties hereto set their hand the day and year first above
written. 
  

					
	EMPLOYER:
	
	Quanta Services, Inc.
		
	By:	 	 /s/ Darren B. Miller

		 	Name:	 	Darren B. Miller
		 	Title:	 	VP – IT and Administration
	
	EMPLOYEE:
	
	 /s/ Nick Grindstaff

	Nick Grindstaff

  
 - 2 -EX-10.4

 Exhibit 10.4 

AMENDMENT NO. 1 
 TO THE

 QUANTA SERVICES, INC. 

NON-EMPLOYEE DIRECTOR DEFERRED COMPENSATION PLAN 

THIS AMENDMENT NO. 1 to the Quanta Services, Inc. Non-Employee Director Deferred Compensation Plan (effective as of
April 30, 2013) is adopted by Quanta Services, Inc. (“Quanta”) as of the 20th day of December 2013, effective as set forth herein. 

RECITALS 

WHEREAS, Quanta has adopted and maintains the Plan, which is a non-qualified deferred compensation plan intended to comply
with applicable requirements of Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), pursuant to which non-employee directors are permitted to defer all or a portion of their eligible director fees under the
Plan; 
 WHEREAS, Quanta desires to amend the Plan to eliminate the requirement that deferred amounts will be paid earlier
than the scheduled payment date in the event of a separation from service prior to such scheduled payment date effective with respect to amounts deferred under the Plan by a Participant pursuant to a deferral agreement entered into on or after
December 13, 2013; and 
 WHEREAS, Quanta has reserved the right to amend the Plan pursuant to Article 8 thereof. 

NOW, THEREFORE, pursuant to Article 8 of the Plan, Quanta hereby amends the Plan, effective as of the date hereof, in the
following respects: 
 1. Section 6.2(a) of the Plan is hereby amended in its entirety to read as follows: 

Effective December 13, 2013, except as otherwise provided in Article 8 hereof, a Participant’s Account (other than
the Pre-2014 Amount (as defined below)) shall be distributed to the Participant (or, in the case of a Participant’s death, his or her Beneficiary) in its entirety no later than sixty (60) days after the earlier to occur of the following:
(i) a Change in Control, and (ii) the date designated in a Deferral Agreement, which date shall be 3, 5, 7 or 10 years from the Award Date or, if elected by the Participant in the Deferral Agreement, the earlier of such date and the
Participant’s Separation from Service, unless a subsequent deferral election is made pursuant to Section 6.2(b). Solely with respect to the Pre-2014 Amount, except as otherwise provided in Article 8 hereof, a Participant’s Account
shall be distributed to the Participant (or, in the case of a Participant’s death, his or her Beneficiary) in its entirety no later than sixty (60) days after the earliest to occur of the following: (i) a Participant’s Separation
from Service; (ii) a Change in Control; and (iii) the date designated in a Deferral Agreement, which date shall be 3, 5, 7 or 10 years from the Award Date, unless a subsequent deferral election is made pursuant to Section 6.2(b). The
“Pre-2014 Amount” means those amounts deferred under the Plan by a Participant pursuant to a Deferral Agreement entered into prior to December 13, 2013 and any earnings thereon. 

 IN WITNESS WHEREOF, Quanta has adopted this Amendment No. 1 to the Plan as
of the day and year first written above. 
  

			
	QUANTA SERVICES, INC.
		
	By:	 	 /s/ Derrick A. Jensen

	Name:	 	Derrick A. Jensen
	Title:	 	Chief Financial Officer

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00230-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00230-of-00352.parquet"}]]