EXHIBIT 10.15G

                             AMENDMENT NO. 1 TO THE
                        PIONEER NATURAL RESOURCES COMPANY
                      EXECUTIVE DEFERRED COMPENSATION PLAN
              (Amended and Restated Effective as of August 1, 2002)

     Pursuant to the  provisions  of Section 12.4 thereof,  the Pioneer  Natural
Resources  Company  Executive  Deferred  Compensation Plan (Amended and Restated
Effective  as of August 1,  2002) (the  "Plan") is hereby  amended by adding the
following to the end of Article III:

     3.4     Qualified  Military  Leave  Make-Up  Deferrals and  Related Make-Up
             Matching Credits for Service Members

     (a)     If a  Member  experiences  periods of  absence  from his  or her or
             employment with the  Company necessitated by  reason of  service in
             the uniformed services within the meaning of the Uniformed Services
             Employment  and  Reemployment  Rights  Act  of  1994,   as  amended
             ("USERRA") (a "Service Member")  and the Service  Member returns to
             active  employment  with the Company  while he or she has rights to
             reemployment  under  USERRA,  then  after  his  or  her  return  to
             employment with  the Company such Service  Member will be permitted
             to make a make-up  deferral to the Plan from his or her base salary
             or bonus in an amount up to (i) the amount the Service Member would
             have been  permitted to  defer under  Section 3.1(a)(1) of the Plan
             during  the  Service  Member's  periods of  absence  for  uniformed
             service minus (ii) any Member Deferrals made to  the Plan on behalf
             of the Service Member  under Section 3.1(a)(1)  during such periods
             of absence (the "Make-Up Deferral").  The Make-Up Deferral shall be
             in addition to the  deferral permitted under Section 3.1(a) for the
             Plan  Year(s)  during  which  the   Make-Up  Deferral  election  is
             effective  and  shall  not be eligible  for a Matching Credit under
             Section  3.2.  The Service  Member shall  be eligible  to have such
             Make-Up  Deferrals  made to the  Plan  on his  or her  behalf for a
             period of time (the "Make-Up Period") equal to  the lesser of (i) 3
             multiplied by his or her immediate past period of uniformed service
             or (ii) 5 years.  The Make-Up  Deferrals may  be made  beginning on
             the first day of the Plan Year following  the Service Member's date
             of  active  reemployment  with the  Company and  continuing for the
             Make-Up  Period.  Prior  to the first  day of each Plan Year during
             the Make-Up Period,  the Service Member must  irrevocably  elect to
             defer from  his or her base salary or bonus as a Make-Up Deferral a
             percentage  or  dollar  amount of his  or her  base salary or bonus
             earned  in  the next  Plan Year.  If the  Service Member  elects to
             defer a  dollar  amount of his or her  base salary for a Plan Year,
             the Make-Up  Deferrals shall be  deferred  in  substantially  equal





             installments over  the  number of payroll  periods during  the Plan
             Year following the Service Member's election. If the Service Member
             elects to defer  an amount of his or her  bonus, the amount will be
             deferred from the  Service Member's bonus  earned in the  next Plan
             Year and payable  in the  Plan Year  after the next Plan Year.  Any
             Make-Up Deferrals elected by  the Service Member shall  be credited
             to his or her General Account as of a date determined in accordance
             with  procedures  established  from  time  to  time  by  the   Plan
             Administrator; provided, however, that such Make-Up Deferrals shall
             be credited to the  Service Member's General  Account no later than
             30 days after the date upon which the  Pay deferred would have been
             received by the Service Member in cash if he or she had not elected
             to defer such amount pursuant to this Section.

     (b)     The Company shall defer on the Service Member's behalf as a make-up
             matching credit  (the "Make-Up Matching  Credit")  an amount  which
             equals 100% of the Service Member's Make-Up Deferrals made pursuant
             to subsection (a) during such  payroll period;  provided,  however,
             that  in no  event shall  the  Service  Member's  Make-Up  Matching
             Credits  exceed (i) 8% (10%  for officers  of the  Company)  of the
             Service Member's base salary during  his or her periods  of absence
             for uniformed  service minus  (ii) any Matching Credits made to the
             Plan on  behalf of the Service  Member under  Section 3.2(a) during
             the Service  Member's  periods of  absence for  uniformed  service.
             Make-Up Matching  Credits made on the Service Member's behalf shall
             be credited  to his or her  Matching Account in accordance with the
             procedures established from time by time by the Plan Administrator.

     (c)     Any amount deferred under this Section 3.4 shall relate to the Plan
             Year  in which  the  amount is  credited  to the  Service  Member's
             Account and shall not be considered to be a deferral for an earlier
             Plan Year  in which  the period  of absence  for  uniformed service
             occurred.   Except  as  otherwise  provided  in this  Section,  all
             provisions of the Plan applicable to  Member Deferrals and Matching
             Credits shall apply with full force and effect to Make-Up Deferrals
             and  Make-Up  Matching  Credits,  respectively,  including, but not
             limited  to,  provisions  governing the  time and  form of  payment
             elections.



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     IN WITNESS  WHEREOF,  this  Amendment  has been  executed  this 20th day of
December, 2006, to be effective as of January 1, 2007.

                                          PIONEER NATURAL RESOURCES COMPANY



                                           By  /s/   Mark H. Kleinman
                                              -------------------------------
                                              Mark H. Kleinman, Vice President




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