<PAGE>

                                                              EXHIBIT 10(iii)(d)


                                                      EDITION OF JANUARY 1, 2000




                     EXXONMOBIL EXECUTIVE LIFE INSURANCE AND
                     ---------------------------------------
                               DEATH BENEFIT PLAN
                               ------------------


            Articles
            --------
                1.    Participation and Coverage
                2.    Levels of Insurance Coverage
                3.    Payment of Benefit
                4.    Designation of Beneficiary
                5.    Miscellaneous

<PAGE>

                     EXXONMOBIL EXECUTIVE LIFE INSURANCE AND
                     ---------------------------------------
                               DEATH BENEFIT PLAN
                               ------------------


                                1. Participation
                                   -------------

1.1  Covered Executive
     -----------------
     Each covered executive is a participant in this Plan.
          -----------------      -----------
1.2  Retiree
     -------
     (A)  In General
          ----------
          Except as provided in paragraph (B) below, each person who becomes a
          retiree on or after the effective date, and who is a covered executive
          -------                 --------------               -----------------
          immediately prior to becoming a retiree is a participant in this Plan.
                                          -------      -----------
          In addition, each grandfathered retiree is a participant in the Plan.
                            ---------------------      -----------
     (B)  Exception
          ---------
          A retiree will cease to be a participant during the time the retiree
            -------                    -----------                     -------
          is a suspended retiree.
               -----------------
1.3  Cessation of Participant Status
     -------------------------------
     (A)  Termination of Employment
          -------------------------
          (1)  In General
               ----------
               Except as provided in paragraphs (2) through (4) below, a covered
                                                                         -------
               executive will cease to be a participant 31 days after the
               ---------                    -----------
               covered executive terminates employment without becoming a
               -----------------
               retiree.
               -------
          (2)  Exception for Long Term Disability
               ----------------------------------
               A covered executive who terminates employment with eligibility
                 -----------------
               for long-term disability benefits under the ExxonMobil Disability
               Plan, will cease to be a participant at the earlier of
                                        -----------
               (a)  one year after terminating employment, or
               (b)  the date the person is no longer eligible for long-term
                    disability benefits on account of ceasing to be disabled.
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          (3)  Exception for Coverage Provided Through Death Benefit
               -----------------------------------------------------
               If, at the time a covered executive terminates employment he or
                                 -----------------
               she has elected to receive executive life coverage in the form of
               a death benefit, the covered executive will cease to be a
                                    -----------------
               participant on the date of such termination of employment.
               -----------
          (4) Exception for Transition Severance Terminees
              --------------------------------------------
               (a)  In General
                    ----------
                    A covered executive who terminates employment without
                      -----------------
                    becoming a retiree shall continue to be a participant for a
                               -------                        -----------
                    period of one year from the date of such termination of
                    employment, but only if the person is eligible for a benefit
                    under the Exxon Transition Severance Plan, or if the
                    Corporation, acting through its management, determines that
                    the covered executive is otherwise eligible for such
                        -----------------
                    continued participation.

               (b)  Termination of Provision
                    ------------------------
                    This paragraph (4) shall not apply to any covered executive
                                                              -----------------
                    who terminates employment after August 31, 2000.

     (B)  Suspended Retirees
          ------------------
          A retiree or grandfathered retiree will cease to be a participant
            -------    ---------------------                    -----------
          during the time the person is a suspended retiree.
                                          -----------------


                                 2.   Coverage
                                      --------

2.1  When and How Coverage is Provided
     ---------------------------------
     (A)  In General
          ----------
          (1)  Executive Life Coverage
               -----------------------
               Executive life coverage is automatically provided to all
               participants other than grandfathered retirees.
               ------------            ----------------------


                                       2
<PAGE>

          (2)  Supplemental Group Life Coverage
               --------------------------------
               Supplemental group life coverage is automatically provided to all
               participants who are grandfathered retirees.
               ------------         ----------------------
     (B)  Life Insurance or Death Benefit Option
          --------------------------------------
          (1)  In General
               ----------
               Both executive life coverage and supplemental group life coverage
               is automatically provided under the Plan as life insurance unless
               a participant elects to receive coverage in the form of a death
                 -----------
               benefit.
          (2)  Election
               --------
               Participants may, at any time, elect to receive executive life or
               ------------
               supplemental group life coverage, whichever is applicable, as a
               death benefit, and may revoke any such election.  An election or
               revocation under this paragraph (2) shall be made in accordance
               with procedures established by the administrator.
                                                  -------------
          (3)  When Election is Effective
               --------------------------
               (a)  Death Benefit
                    -------------
                    An election under paragraph (2) above to receive executive
                    life or supplemental group life coverage as a death benefit
                    shall become effective on the first of the month following
                    the receipt of such election by the administrator.
                                                        -------------
               (b)  Revocation of Election
                    ----------------------
                    A participant's revocation of a death benefit election in
                      -------------
                    favor of receiving executive life or supplemental group life
                    coverage as life insurance becomes effective on the first of
                    the month following the date the administrator receives
                                                     -------------
                    notification from the insurer that the insurer has, in its
                                          -------          -------
                    discretion, approved evidence of insurability submitted by
                    the participant.
                        -----------

                                       3
<PAGE>

          (4)  Reinstatement of Coverage
               -------------------------
               If a participant's executive life or supplemental group life
                    -------------
               coverage is reinstated after a period in which the participant
                                                                  -----------
               was ineligible for coverage under section 1.3(B) above on account
               of becoming a suspended retiree, such coverage shall be
                             -----------------
               reinstated under the option (i.e., life insurance or a death
               benefit) in force at the time coverage was lost.

     (C)  Termination of Coverage
          -----------------------
          Executive life or supplemental group life coverage terminates for an
          individual on the date the individual ceases to be a participant.
                                                               -----------
2.2  Amount of Benefit
     -----------------
     (A)  Executive Life Coverage
          -----------------------
          (1)  In General
               ----------
               Except as provided in paragraph (2) below, the amount of
               executive life coverage in effect for a participant is equal to
                                                       -----------
               the applicable percentage determined under the following chart
               multiplied by the participant's annual base pay:
                                 -------------

                 If the participant's age is    The percentage is
                 ---------------------------    -----------------
                          Under 65                    400%
                            65-69                     350%
                            70-74                     300%
                         75 and over                  250%

               For this purpose, a participant attains a particular age as of
                                   -----------
               the first day of the month in which the person will turn such
               age.  In addition, a covered executive's annual base pay is the
                                    -------------------
               base pay in effect at the time coverage is determined, and a
               retiree's base pay is the base pay in effect for the person
               ---------
               immediately before the person became a retiree.
                                                      -------

                                       4
<PAGE>

          (2) Transition Severance Terminees
              ------------------------------
              The amount of executive life coverage in effect for a person who
              is a participant solely on account of section 1.3(A)(4) above
                   -----------
              relating to transition severance terminees is 200% of the
              person's annual base pay in effect immediately before the
              person's termination of employment.

     (B)  Supplemental Group Life Coverage
          --------------------------------
          Supplemental Group Life Coverage is provided
          (1) during retirement to all grandfathered retirees, and
                                       ----------------------
          (2) during employment to those persons who become grandfathered
                                                            -------------
              retirees after the effective date.
              --------           --------------
          The amount of supplemental group life coverage in effect for a
          grandfathered retiree is equal to the amount of coverage in effect for
          ---------------------
          the person under the provisions of the Supplemental Group Life
          Insurance Plan or Supplemental Group Death Benefit Plan (as such plans
          existed on December 31, 1999) as of the later of December 31, 1999 or
          the date the person retires.  The amount of supplemental group life
          coverage in effect during employment for a person who becomes a
          grandfathered retiree after the effective date is the amount of
          ---------------------           --------------
          coverage to which they are entitled under the terms of the
          Supplemental Group Life Insurance Plan or Supplemental Group Death
          Benefit Plan (as such plans existed on December 31, 1999).


                            3.   Payment of Benefit
                                 ------------------

3.1  Conditions for Payment of Benefit
     ---------------------------------
     If a participant dies while executive life or supplemental group life
          -----------
     coverage for that participant is in effect, then the amount of coverage
                       -----------
     then in effect for the


                                       5
<PAGE>

     participant becomes payable; provided, that proof of death satisfactory to
     -----------
     the insurer must be provided before any benefit becomes payable as life
         -------
     insurance.
3.2  Form of Payment
     ---------------
     A benefit payable under Section 3.1 above upon a participant's death shall
                                                      -------------
     be paid in a lump sum.
3.3  Source of Payment
     -----------------
     (A)  Life Insurance
          --------------
          Executive life and supplemental group life coverage in the form of
          life insurance shall be provided through one or more policies of
          insurance issued by an insurer selected by the Corporation, and any
                                 -------                 -----------
          executive life or supplemental group life benefit payable as insurance
          shall be paid pursuant to such policy or policies.
     (B)  Death Benefit
          -------------
          Any executive life or supplemental group life benefit payable as a
          death benefit shall be paid from the general assets of the
          Corporation.
          -----------
3.4  To Whom Paid
     ------------
     A benefit payable under Section 3.1 above upon a participant's death shall
                                                      -------------
     be paid as follows:
     (A)  If a beneficiary designation is in effect at the time of the
          participant's death, the benefit shall be paid in accordance with such
          -------------
          designation.
     (B)  If no beneficiary designation is in effect, the benefit shall be paid
          to the first of the following groups that has at least one member that
          survives the participant:
                       -----------
          (1)  The participant's spouse.
                   -------------
          (2)  The participant's children.  In this event, the benefit will be
                   -------------
               divided equally among the children who survive the participant as
                                                                  -----------
               well as the children who die before the participant leaving
                                                       -----------
               children of their own who survive the participant.  In the case
                                                     -----------
               of a participant's child who dies before the participant leaving
                    -------------                           -----------
               children of his or her own


                                       6
<PAGE>

               who survive the participant, such child's share shall be divided
                               -----------
               equally among his or her surviving children.
          (3)  The participant's parents.  In this event, the benefit will be
                   -------------
               divided equally among the parents if they both survive the
               participant.
               -----------
          (4)  The participant's brothers and sisters.  In this event, the
                   -------------
               benefit will be divided equally among the brothers and sisters
               who survive the participant as well as the brothers and sisters
                               -----------
               who die before the participant leaving children of their own who
                                  -----------
               survive the participant.  In the case of a brother or sister who
                           -----------
               dies before the participant leaving children of his or her own
                               -----------
               who survive the participant, such brother or sister's share shall
                               -----------
               be divided equally among his or her surviving children.
          (5)  The participant's executors or administrators.
                   -------------
          For purposes of this Paragraph (B), a spouse of a participant shall
                                                            -----------
          include only someone who is the legal spouse of the participant, and a
                                                              -----------
          child, parent, brother, or sister of a participant shall include only
                                                 -----------
          someone who is a legitimate blood relative of the participant or whose
                                                            -----------
          relationship with the participant is established by virtue of a legal
                                -----------
          adoption.


                        4.   Designation of Beneficiary
                             --------------------------

4.1  Designation
     -----------
     A participant may designate one or more beneficiaries to receive the
       -----------
     payment of benefits upon the death of the participant, or may at any time
                                               -----------
     change or cancel a previously made beneficiary designation.
4.2  Forms and Submission
     --------------------
     Any beneficiary designation or change or cancellation thereof shall be made
     on such forms and in such manner as is satisfactory to the insurer.  No
                                                                -------
     beneficiary


                                       7
<PAGE>

     designation or change or cancellation thereof shall become effective until
     received by the insurer or its designated agent.
                     -------
4.3  Designation Made Under Prior Plans
     ----------------------------------
     Any beneficiary designation made by a participant under the Supplemental
                                           -----------
     Group Life Insurance Plan or Supplemental Death Benefit Plan that remains
     in effect on December 31, 1999, shall continue to be valid under this Plan
     on and after the effective date until and unless properly superceded.
                      --------------


                               5.  Miscellaneous
                                   -------------

5.1  Plan Funding
     ------------
     The funding for executive life and supplemental group life coverage,
     including the funding of premiums under any life insurance policy issued in
     connection with such coverage, shall be paid for by the Corporation; no
                                                             -----------
     participant contributions will be required or permitted.
     -----------
5.2  Assignment of Insurance
     -----------------------
     (A)  Assignment
          ----------
          A participant may assign to another owner the participant's interest
            -----------                                 --------------
          in his or her executive life or supplemental group life coverage
          provided in the form of life insurance.  Such assignment shall be made
          on such forms and in such manner as is acceptable to the administrator
                                                                   -------------
          and the insurer.
                  -------
     (B)  Effect of Assignment
          --------------------
          (1)  In General
               ----------
               When an assignment of a participant's coverage is in effect as
                                       -------------
               described in paragraph (A) above, then, except as provided in
               paragraph (2) below, the participant's assignee shall have the
                                        -------------
               right to take all actions under the terms of this Plan with
               respect to such coverage that the participant would otherwise
                                                 -----------
               have the right to


                                       8
<PAGE>

               take, including, without limitation, the right to designate a
               beneficiary.
          (2)  Exception
               ---------
               An assignee shall not have the right under this Plan to elect to
               receive executive life or supplemental group life coverage as a
               death benefit under section 2.1(B)(2) above or to revoke an
               already existing election.
     (C)  Assignment Under Prior Plan
          ---------------------------
          Any assignment of coverage made by a participant under the
                                               -----------
          Supplemental Group Life Insurance Plan shall continue to be valid
          under this Plan with respect to executive life and supplemental group
          life coverage.
5.3  Amendment and Termination
     -------------------------
     The Corporation at any time, by action of any duly authorized officer, may
         -----------
     amend or terminate this Plan in whole or in part.
5.4  Responsibilities and Authority of Administrator
     -----------------------------------------------
     The administrator shall fulfill all duties and responsibilities of a "plan
         -------------
     administrator" required by the Employee Retirement Income Security Act of
     1974, as amended.  The administrator shall have the authority to control
                            -------------
     and manage the operation and administration of this Plan, including,
     without limitation:
     (A)  discretionary and final authority to determine eligibility and to
          administer this Plan in its application to each participant and
          beneficiary; and
     (B)  discretionary and final authority to interpret this Plan, in whole or
          in part, including but not limited to, exercising such authority in
          conducting a full and fair review, with such interpretation being
          conclusive for all participants and beneficiaries under this Plan.


                                       9
<PAGE>

5.5  Claim Appeal Process
     --------------------
     (A)  Submission of Appeal
          --------------------
          In the event a claim for benefits is denied, the claimant has the
          right to appeal to the administrator.  A written request to review a
                                 -------------
          denied claim must be received by the administrator within 90 days
                                               -------------
          after the claim denial.  The request may state the reasons the
          claimant believes he or she is entitled to Plan benefits, and may be
          accompanied by supporting information and documentation for the
          administrator's consideration.
          ---------------
     (B)  Decision
          --------
          The administrator shall decide appeals in accordance with the
              -------------
          administrator's fiduciary authority set out in section 5.4 above.
          ---------------
          Appeal decisions will be made within 60 days of the receipt of the
          claim by the administrator unless special circumstances warrant an
                       -------------
          extension of time.  If an extension of time is required, the
          administrator will notify the claimant of the extension.  In all
          -------------
          cases, the decision will be made no later than 120 days after the
          receipt of the claim by the administrator.  The appeal decision shall
                                      -------------
          be in writing, specify the reasons for the decision, and refer to the
          relevant Plan provision(s) on which the decision is based.

5.6  Definitions
     -----------
     The following terms shall have the following meanings ascribed to them:
     (A)  "Administrator" means the Manager, Compensation and Executive Plans,
          Human Resources Department, Exxon Mobil Corporation.
     (B)  "Corporation" means Exxon Mobil Corporation.
     (C)  "Covered Employee" has the meaning set out in the ExxonMobil Benefit
          Plans Common Provisions.
     (D)  "Covered Executive" means a covered employee who has a classification
                                      ----------------
          level of 35 or higher.
     (E)  "Effective Date" means January 1, 2000.
     (F)  "Grandfathered retiree" means a person who


                                      10
<PAGE>

          (1)  became a retiree prior to the effective date, and was covered
                        -------              --------------
               under the Supplemental Group Life Insurance Plan or Supplemental
               Death Benefit Plan immediately prior to the effective date, or
                                                           --------------
               who
          (2)  becomes a retiree after the effective date after having been
                         -------           --------------
               given the opportunity to elect and having elected continued
               coverage under the Supplemental Group Life Insurance Plan or
               Supplemental Death Benefit Plan.
     (G)  "Insurer" means the insurance company that is the issuer of the policy
          of insurance described in section 3.3(A) above.
     (H)  "Participant" means a covered executive, retiree, or grandfathered
                                -----------------  -------     -------------
          retiree, as the context requires.
          -------
     (I)  "Retiree"
          (1)  In General
               ----------
               "Retiree" has the meaning set out in the ExxonMobil Benefit Plans
               Common Provisions.
          (2)  Transition Severance Cases
               --------------------------
               (a)  Treatment as Covered Annuitant
                    ------------------------------
                    Solely for purposes of this Plan, a person who is described
                    in paragraph (b) below shall be treated as if he or she were
                    a retiree.
                      -------
               (b)  Eligibility
                    -----------
                    A person is described in this paragraph (b) if the person
                    (i)  terminates employment as a covered executive;
                                                    -----------------
                    (ii)   is at least 50 years old by the end of the month in
                           which the termination of employment occurs;
                    (iii)  has at least 10 years of benefit plan service (as
                           defined in the ExxonMobil Benefit Plans Common
                           Provisions) at the time of the termination of
                           employment; and

                                      11
<PAGE>

                    (iv) upon termination of employment receives a benefit under
                         the Exxon Transition Severance Plan.
               (c)  Termination of Provision
                    ------------------------
                    This paragraph (2) shall not apply to any person who fails
                    to meet the eligibility requirements set out in paragraph
                    (b) above on or before August 31, 2000.
     (J)  "Suspended retiree"
          (1)  In General
               ----------
               "Suspended Retiree" means a person who becomes a retiree by
                                                                -------
               virtue of being incapacitated within the meaning of the
               ExxonMobil Disability Plan and commences long-term disability
               benefits under such Plan, but whose benefits under such Plan
               thereafter cease by virtue of
               (a) the person no longer being incapacitated, or
               (b) the person's failure to report non-rehabilitative employment.
          (2)  Period
               ------
               A person remains a suspended retiree until the earlier of (1) the
                                  -----------------
               date the person attains age 55, or (2) the date the person
               commences his or her benefit or receives a lump-sum settlement
               under the ExxonMobil Pension Plan, at which time the person is
               again considered a retiree.
                                  -------


                                      12