First Amendment to Employment Agreement (Peter D. Johnston)



 EXHIBIT 10.6 
 FIRST AMENDMENT 
 TO 
 EMPLOYMENT AGREEMENT 
 First Amendment (“Amendment”) made as of the 1st day of November, 2007 to the Employment Agreement (“Employment
Agreement”) dated as of August 25, 2005, by and between Boston Properties, Inc., a Delaware corporation with its principal executive office in Boston, Massachusetts (the “Company”), and Peter D. Johnston
(“Employee”). 
 WHEREAS, the parties hereto desire to amend the Employment Agreement to comply with the requirement
of Section 409A of the Internal Revenue Code of 1986, as amended; and 
 WHEREAS, the parties hereto desire that this Amendment be
deemed a modification and an amendment to the Employment Agreement. 
 NOW, THEREFORE, in consideration of the mutual covenants contained
herein, the Company and Employee agree as follows: 
 1. Subparagraph 8(e) of the Employment Agreement is hereby amended by deleting
subsubparagraph (ii) thereof in its entirety and substituting therefor the following: 
 “(ii) Employee may
terminate his employment hereunder for Good Reason. “Good Reason” shall mean: (A) a substantial adverse change, not consented to by Employee, in the nature or scope of Employee’s responsibilities, authorities, powers,
functions, or duties under this Agreement; (B) a breach by the Company of any of its material obligations hereunder; or (C) a material change in the geographic location at which Employee must perform his services. To constitute Good Reason
termination, Employee must (1) provide written notice to the Company within ninety (90) days of the initial existence of the event constituting Good Reason, (2) may not terminate his employment pursuant to this subparagraph unless the
Company fails to remedy the event constituting Good Reason within thirty (30) days after such notice has been deemed given pursuant to this Agreement, and (3) Employee must terminate employment with the Company no later than thirty
(30) days after the end of the thirty-day period in which the Company fails to remedy the event constituting Good Reason.” 
 2.
Subparagraph 8(e)(iii) of the Employment Agreement is hereby amended by adding the clause “(the “Release”) no later than twenty-one (21) days after the Date of Termination,” after the word “Company” in the second
sentence thereof. 
 3. Subparagraph 8(e)(iii) of the Employment Agreement is further amended by deleting the last sentence of clause
(A) thereof and substituting therefor the following: 
  







 “The Severance Amount shall be paid in equal installments in accordance with the
Company’s then payroll practice over a twelve (12) month period beginning with the first payroll date after the execution of the Release and the lapse of the seven-day revocation period provided in the Release. Solely for purposes of
Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), each installment payment is considered a separate payment;” 
 4. Subparagraph 8(e)(iii) of the Employment Agreement is hereby amended by adding the following clause (E) at the end of clause (D): 
 “(E) Anything in this Agreement to the contrary notwithstanding, if at the time of Employee’s separation from service, Employee
is considered a ‘specified employee’ within the meaning of Section 409A(a)(2)(B)(i) of the Code, and if any payment that Employee becomes entitled to under this Agreement would be considered deferred compensation subject to interest
and additional tax imposed pursuant to Section 409A(a) of the Code as a result of the application of Section 409A(a)(2)(B)(i) of the Code, then no such payment shall be payable prior to the date that is the earlier of (1) six months
and one day after Employee’s separation from service, or (2) Employee’s death, and the initial payment shall include a catch-up payment covering amounts that would otherwise have been paid during the six-month period but for the
application of this provision.” 
 5. All other provisions of the Employment Agreement shall remain in full force and effect according
to their respective terms, and nothing contained herein shall be deemed a waiver of any right or abrogation of any obligation otherwise existing under the Employment Agreement except to the extent specifically provided for herein. 
 IN WITNESS WHEREOF, this Amendment has been executed as a sealed instrument by the Company and by Employee as of the date first above written.

 BOSTON PROPERTIES, INC. 
 By:  /s/  Douglas T. Linde                 
         Name: Douglas T. Linde 
         Title: President 
 /s/  Peter D.
Johnston                       
 PETER D. JOHNSTON 
  

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