Document:

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                                THIRD AMENDMENT
                                      OF
                 FMC CORPORATION EMPLOYEES' RETIREMENT PROGRAM
                        PART II UNION HOURLY EMPLOYEES'
                                RETIREMENT PLAN
                                ---------------
              (As Amended and Restated Effective January 1, 1999)

     WHEREAS, FMC Corporation (the "Company") maintains the FMC Corporation
Employees' Retirement Program Part II Union Hourly Employees' Retirement Plan
(the "Plan"); and

     WHEREAS, the Company's existing businesses are being separated into two
independent businesses, to be known at FMC Corporation and FMC Technologies,
Inc. ("FTI"), in accordance with the terms of the Separation and Distribution
Agreement, by and between the Company and FTI; and

     WHEREAS, in connection with such separation, certain Company employees are
transferring employment to FTI (the "FTI Employees"); and

     WHEREAS, pursuant to the terms of the Employee Benefits Agreement by and
between the Company and FTI (the "Benefits Agreement") FTI has agreed to
establish a defined benefit pension plan that mirrors the terms of this Plan for
the benefit of the FTI Employees (the "FTI Plan") and has agreed to establish a
tax-exempt trust to accept a transfer of Plan assets attributable to the FTI
Employees; and

     WHEREAS, it is desirable that the FTI Employees who are Plan participants
cease to accrue any benefit under this Plan after their transfer to FTI; and

     WHEREAS, the Company has negotiated certain benefit increases with respect
to employees of covered by the collective bargaining agreements between the
Company and (i) the International Union, United Automobile, Aerospace and
Agricultural Implement Workers of
<PAGE>

America Local No. 714 and (ii) the International Association of Machinists and
Aerospace Workers, AFL-CIO, District 76, Local Lodge 1180; and

     WHEREAS, amendment of the Plan is now considered desirable to reflect these
changes.

     NOW, THEREFORE, by virtue and in exercise of the powers reserved to the
Company under Section 11.1 of the Plan, and pursuant to authority delegated to
the undersigned officer of the Company by resolution of its Board of Directors,
the Plan is hereby amended, effective as of May 1, 2001, in the following
respects:

     1.  FTI shall cease being a Participating Employer under the Plan as of
May 1, 2001.

     2.  Effective on the date such FTI Employee's benefits under the Plan are
deemed transferred to and assumed by the FTI Plan pursuant to the Benefits
Agreement (the "FTI Effective Date"), each such FTI Employee shall cease being
an Eligible Employee under the Plan and such FTI Participant's participation in
the Plan shall cease.

     3.  Effective as of each respective FTI Employee's FTI Effective Date, such
FTI Employee shall cease accruing any Earnings, Years of Credited Service, Hours
of Service, Years of Vesting Service and any further benefits under the Plan,
unless and until the FTI Employee once again earns and Hour of Service as an
Employee of the Company or an Affiliate, other than FTI.

     4.  Each respective FTI Employee's FTI Effective Date shall be as a
Severance From Service Date for such FTI Employee.

     5.  Effective May 1, 2001 by revising Exhibit A, Merged Plans, to delete
the references to (a) Jetway Systems Division Pension Plan for Hourly Employees
(May 27, 1994); (b) FMC Corporation Retirement Plan for Hourly Employees -
Packaging Machinery Division,

                                       2
<PAGE>

Green Bay, WI (December 31, 1998); (c) Smith Meter, Inc. Erie Plant Industrial
Pension Plan (December 31, 1998); and (d) FMC Corporation Retirement Plan - Food
Processing Machinery Division, Hoopeston (December 31, 1998).

     6.  Effective May 1, 2001 by deleting Supplement 2 - Jetway Systems
Division Pension Plan for Hourly Employees; Supplement 3 - FMC Corporation
Retirement Plan for Hourly Employees - Packaging Machinery Division, Green Bay,
WI; Supplement 11 - Smith Meter, Inc. Erie Plant Industrial Pension Plan; and
Supplement 12 - FMC Corporation Retirement Plan - Food Processing Machinery
Division, Hoopeston to the Plan.

     7.  Effective May 1, 2001 by substituting the following for Supplement 7
Commercial Segment, San Jose California:

                                 "SUPPLEMENT 7

                   COMMERCIAL SEGMENT, SAN JOSE, CALIFORNIA
                   ----------------------------------------

          7-1  Eligible Employees
               ------------------

                    The terms of this Supplement apply only to individuals
          participating in the FMC Corporation Retirement Plan for San Jose
          Commercial Segment Hourly Employees ("Prior Plan") on the Freeze Date
          who were a part of the Woodlands Equipment Division and who had not
          yet received a full distribution of their benefit under such Prior
          Plan as of the Effective Date ("Participant").

          7-2  Freeze Date
               -----------

                    Effective December 19, 1980 ("Freeze Date"), the
          Participants had their benefit in the Prior Plan frozen. No new
          Participants entered the Prior Plan after the Freeze Date, and no
          benefits accrued for Participants under the Prior Plan after the
          Freeze Date.

          7-3  Actuarial Equivalent
               --------------------

                    Actuarial Equivalent, other than for purposes of Section
                    --------------------
          12.8 of the Plan, shall be determined based on the 1951 Group Annuity
          Mortality Table and 3.5% interest compounded annually.

                                       3
<PAGE>

          7-4  Normal Retirement Date
               ----------------------

                    Normal Retirement Date means the first day of the month
                    ----------------------
          coinciding with or next following the Participant's 65th birthday.

          7-5  Normal Retirement Benefit
               -------------------------

                    A Participant's monthly Normal Retirement Benefit shall be
          the Participant's monthly normal retirement benefit accrued under the
          Prior Plan as of the Freeze Date.

          7-6  Early Retirement Date
               ---------------------

                    Early Retirement Date means the later of the Participant's
          55th birthday and the date the Participant acquires 10 Years of
          Vesting Service.

          7-7  Early Retirement Reduction Factor
               ---------------------------------

                    If a Participant's Early Retirement Benefit commences prior
          to age 65, the Participant's Early Retirement Benefit shall be reduced
          to the Actuarial Equivalent of the Participant's basic benefit in
          accordance with Tables A or B attached hereto.

          7-8  Termination Benefits Reduction Factor
               -------------------------------------

                    If a Participant's Termination Benefit commences prior to
          age 65, the Participant's Termination Benefit shall be reduced to the
          Actuarial Equivalent of the Participant's basic benefit in accordance
          with Tables A or B attached hereto."

     8.  Effective January 1, 2001, by substituting the following for Section
11-5 of Supplement 11 - Smith Meter, Inc. Erie Plant Industrial Pension Plan:

     "A Participant's monthly Normal Retirement Benefit shall be determined by
     multiplying the fixed rate provided below in effect on the date the
     Participant's Years of Credited Service terminate, multiplied by the
     Participant's Years of Credited Service:

          Termination Date                                       Benefit Rate
          ----------------                                       ------------
     On or after January 1, 1999 and prior to January 1, 2001    $25.00
     On or after January 1, 2001 and prior to January 1, 2002    $26.00
     On or after January 1, 2002 and prior to January 1, 2003    $27.00
     On or after January 1, 2003 and prior to January 1, 2004    $28.00
     On or after January 1, 2004 and prior to January 1, 2005    $29.00
     On or after January 1, 2005                                 $29.00

                                       4
<PAGE>

     Each Participant whose Years of Credited Service terminates after January
     1, 2001, but prior to January 1, 2004 shall have their Normal Retirement
     Benefit recalculated effective January 1, 2004 using a monthly benefit rate
     of $29.00, provided that any such recalculation shall not increase the
     amount of Normal Retirement Benefit already paid to such Participant and
     shall be applied solely to any Normal Retirement Benefit payable after
     January 1, 2004. A Participant's monthly Normal Retirement Benefit shall be
     increased by $20.00 per month after the Participant attains age 65, and by
     an additional $20.00 per month after the Participant's spouse attains age
     65."

     9.  Effective January 1, 2001, by substituting the following for Section
11-9 of Supplement 11 - Smith Meter, Inc. Erie Plant Industrial Pension Plan:

     "The Participant's Disability Retirement Benefit shall be determined by
     multiplying fixed rate provided below in effect on the date of his Total
     and Permanent Disability commences, multiplied by the Participant's Years
     of Credited Service as of such date:

          Termination Date                                       Benefit Rate
          ----------------                                       ------------
     On or after January 1, 1999 and prior to January 1, 2001    $50.00
     On or after January 1, 2001 and prior to January 1, 2002    $52.00
     On or after January 1, 2002 and prior to January 1, 2003    $54.00
     On or after January 1, 2003 and prior to January 1, 2004    $56.00
     On or after January 1, 2004 and prior to January 1, 2005    $58.00
     On or after January 1, 2005                                 $58.00

     All disability retirement benefits shall be reduced by the amount of (a)
     worker's compensation benefits; and (b) any present or future payments on
     account of injury, disease or disability under the Federal Social Security
     Act, as amended, or any other Federal or State law under which the Company
     contributes through taxes or otherwise to benefits for injury, disease or
     disability of Employees whether occupational or non-occupational; provided
     however, that the provisions of this Section 11-9 shall not operate to
     reduce the disability retirement benefits to less than the retirement
     benefits to which the Participant would have been entitled had the
     Participant reached the Participant's 62nd birthday at time of disability
     retirement."

     10.  Effective January 20, 2001 by substituting the following for Section
15-5 of Supplement 15- Agricultural Chemical Division, Middleport, New York:

     "A Participant's monthly Normal Retirement Benefit shall be determined by
     multiplying the fixed rate provided below in effect on the date the
     Participant's Years of Credited Service terminate, multiplied by the
     Participant's Years of Credited Service:

                                       5
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          Termination Date                     Benefit Rate
          ----------------                     ------------
     On or after January 20, 1998              $23.00
     but before January 20, 1999
     On or after January 20, 1999              $23.00
     but before January 20, 2000
     On or after January 20, 2000              $28.00
     but before February 1, 2001
     On or after February 1, 2001              $29.00
     but before January 31, 2002
     On or after February 1, 2002              $30.00
     but before January 31, 2003
     On or after February 1, 2003              $31.00
     but before January 31, 2004

     Notwithstanding the foregoing, and subject to the applicable terms of the
     Plan a Participant who has attained age 62 and who has 10 or more Years of
     Credited Service shall have their Normal Retirement Benefit based on the
     following monthly benefit rates:

          (a)  if such Participant elects to commence Normal Retirement Benefits
               or Early Retirement Benefits in calendar years 1998 or 1999  at a
               rate equal to $28.00, or

          (b)  if such Participant elects to commence Normal Retirement Benefits
               or Early Retirement Benefits in calendar years 2001 or 2002 at a
               rate equal to $31.00."

     IN WITNESS WHEREOF, the Company has caused this Third Amendment to be
executed by a duly authorized representative this 30th day of April, 2001.

                                    FMC CORPORATION

                                    By: Stephen F. Gates
                                        --------------------
                                    Member, Employee Welfare Benefits Plan
                                    Committee

                                       6<PAGE>

                                                                  Exhibit 10.4.g

                              FOURTH AMENDMENT OF
                 FMC CORPORATION EMPLOYEES' RETIREMENT PROGRAM
        PART I SALARIED AND NONUNION HOURLY EMPLOYEES' RETIREMENT PLAN
        --------------------------------------------------------------
              (As Amended and Restated Effective January 1, 1999)

     WHEREAS, FMC Corporation (the "Company") maintains the FMC Corporation
Employees' Retirement Program Part I Salaried and Nonunion Hourly Employees'
Retirement Plan (the "Plan"); and

     WHEREAS, the Plan has been amended from time to time, and further amendment
of the Plan is now considered desirable;

     NOW, THEREFORE, by virtue and in exercise of the powers reserved to the
Company under Section 11.1 Plan Amendment or Termination of the Plan, and
                           -----------------------------
pursuant to authority delegated to the undersigned officer of the Company by
resolution of its Board of Directors, the Plan is hereby amended, effective
January 1, 1999, in the following respects:

     1.   By inserting the following at the end of the definition of "Foreign
Subsidiary" in Article I of the Plan:

          "Highly Compensated Employee means an Employee who:
           ---------------------------

          (a)  at any time during the Determination Year or the Look-Back Year
               owns (or is considered under Code Section 318 to own) more than
               five percent of the Company or an Affiliate; or

          (b)  had more than $80,000, as adjusted, in compensation (as defined
               in Code Section 415(c)(3)) from the Company and the Affiliates
               during the Look-Back Year.

     The 'Determination Year' is the Plan Year for which the determination of
     who is a Highly Compensated Employee is being made, and the 'Look-Back
     Year' is the 12 month period immediately preceding the determination year.

          A former Employee of the Company or an Affiliate is a Highly
     Compensated Employee for a given Determination Year if he or she separated
     from service (or was deemed to have separated) before the Determination
     Year, performs no services for a Participating Employer during the
     Determination Year, and was a Highly Compensated Employee for the Plan Year
     during which he or
<PAGE>

     she separated from service (or was deemed to have separated) or for any
     Determination Year ending on or after his or her 55th birthday.

          The Secretary of the Treasury or its delegate will adjust the $80,000
     limit from time to time, to reflect increases in the cost of living.
     Employees who are nonresident aliens and receive no earned income (within
     the meaning of Code Section 911(d)(2)) from the Company and its Affiliates
     that constitutes income from sources within the United States (within the
     meaning of Code Section 861(a)(3)) are not treated as Employees for
     purposes of this definition."

     2.   By inserting the following at the end of the definition of "Hour of
Service" in Article I of the Plan:

          "Notwithstanding the foregoing, for purposes of Section 2.1.(b)(ii),
     "Hour of Service" means each hour for which an Employee is directly or
     ----------------
     indirectly paid or entitled to payment by the Company or an Affiliate:

          (a)  for the performance of duties;

          (b)  on account of a period of time during which no duties were
     performed, provided that Hours of Service will not be credited for payments
     made or due under a plan maintained solely for the purpose of complying
     with applicable workers' compensation, unemployment compensation, or
     disability insurance laws, or for payments that reimburse an Employee's for
     medically related expenses; and

          (c)  for which back pay, irrespective of mitigation of damages, is
     awarded or agreed to by the Company, provided that, the same Hours of
     Service have not already been credited under (a) or (b) above.

          No more than 501 Hours of Service will be credited for any single
     continuous period of time during which the Employee performed no duties.
     The determination of Hours of Service for reasons other than the
     performance of duties shall be determined in accordance with the provisions
     of Labor Department Regulations Section 2530.200b-2(b), which are
     incorporated herein by reference, and Hours of Service shall be credited to
     computation periods in accordance with the provisions of Labor Department
     Regulations Section 2530.200b-2(c), which are incorporated herein by
     reference."

     3.   By inserting the following at the end of Section 3.1.1:

          "Notwithstanding anything to the contrary contained in the Plan, a
     Participant's right to his or her Normal Retirement Benefit is
     nonforfeitable upon the attainment of his or her Normal Retirement Date."

                                       2
<PAGE>

     4.    By inserting the following at the end of Section 3.3.2:

           "In the case of a Participant who commences distribution of his
     accrued benefit beyond the April 1 of the calendar year following the year
     in which he attains age 70 1/2, the Participant's accrued benefit shall be
     actuarially increased to take into account the period after age 70 1/2 in
     which the Participant was not receiving any benefits under the Plan."

     5.    By deleting the substituting "65/th/" for "62/nd/" in the last line
     of Section 3.2.3.

     6.    By substituting the following for the last sentence of Section
     3.5.1(iv)(3):

           "The mortality basis for determining Actuarial Equivalence for
     terminations prior to January 1, 1995 shall be the 1971 Group Annuity
     Mortality Table (weighted 95% male and 5% female.) The mortality basis for
     determining Actuarial Equivalence for terminations on or after January 1,
     1995 shall be the 1983 Group Annuity Mortality Table (weighted 50% male and
     50% female)."

     7.    By substituting the following for Section 3.5.1(iv)(4):

           "In the case of a Participant whose retirement benefit commences
     after Social Security Retirement Age, the dollar limitation shall be the
     Actuarial Equivalent of Subsection (a) above payable at Social Security
     Retirement Age. The interest rate for determining Actuarial Equivalence
     shall be the greater of the interest rate assumption under the Plan for
     determining early retirement benefits or 5% per year. The mortality basis
     for determining Actuarial Equivalence for terminations prior to January 1,
     1995 shall be the 1971 Group Annuity Mortality Table (weighted 95% male and
     5% female.)" The mortality basis for determining Actuarial Equivalence for
     terminations on or after January 1, 1995 shall be the 1983 Group Annuity
     Mortality Table (weighted 50% male and 50% female)."

     8.    By deleting the words "highly compensated employee or former employee
(determined in accordance with section 414(g) of the Code and regulations
thereunder)" in Section 11.4 and substituting therefor the words "Highly
Compensated Employee."

     9.    By inserting the following at the end of Section 11.4:

     "11.5 Provision To Prevent Discrimination
           -----------------------------------

           11.5.1  Purpose. To prevent discrimination in favor of Highly
                   -------
     Compensated Participants, the provisions of this Section 11.5 shall be
     applicable notwithstanding anything elsewhere contained in the Plan to the
     contrary.

                                       3
<PAGE>

          11.5.2  Definitions.  In this Section 11.5, the following terms shall
                  -----------
     have the meaning stated below:

          "Benefit" shall include among other benefits under the Plan, loans in
           -------
     excess of the amounts set forth in Section 72(p)(2)(A) of the Code, any
     periodic income, any withdrawal values payable to a living or former
     Employee, and any death benefits under the Plan not provided for by
     insurance on the Employee's or former Employee's life.

          "Current Liabilities" shall have the meaning set forth in Section
           -------------------
     412(1)(7) of the Code.

          "Social Security Supplement" shall have the meaning set forth in
           --------------------------
     Internal Revenue Service Regulation (S) 1.411(a)-7(c)(4)(ii).

          11.5.3    Limitations.
                    -----------

                    (a)  In the event of termination of the Plan, the Benefit of
          any Highly Compensated Employee (and any former Highly Compensated
          Employee) is limited to a Benefit that is nondiscriminatory under
          Section 401(a)(4) of the Code.

                    (b)  The annual payments under the Plan to or on behalf of
          any Employee described in Section 11.5.4 are restricted to an amount
          in each taxable year of the Employee equal to the payments that would
          be made to or on behalf of the Employee under:

                         (i)  a straight life annuity that is the Actuarial
                    Equivalent of the accrued benefit and other Benefits to
                    which the Employee is entitled under the Plan (other than a
                    Social Security Supplement), and

                         (ii) the amount of the payments that the Employee is
                    entitled to receive under a Social Security Supplement.

                    (c)  The restrictions in paragraph (b) above do not apply,
                    if any of the following requirements is satisfied:

                         (i)  after payment to or on behalf of an Employee
                    described in Section 11.5.4 of all Benefits payable to or on
                    behalf of the Employee, the value of Plan assets equals or
                    exceeds 110% of the value of Current Liabilities,

                         (ii) the value of Benefits payable to or on behalf of
                    an Employee described in Section 11.5.4 is less than 1% of
                    the value of the Current Liabilities before distribution, or

                                       4
<PAGE>

                         (iii)  the value of the Benefits payable to or on
                    behalf of an Employee described in Section 11.5.4 does not
                    exceed the amount described in Section 411(a)(11)(A) of the
                    Code.

          11.5.4    Employees Whose Benefits are Restricted.  The Employees
                    ---------------------------------------
     whose Benefits are restricted on distribution include all Highly
     Compensated Employees and former Highly Compensated Employees.

          A Highly Compensated Employee or former Highly Compensated Employee is
     not subject to restriction under this Article if he is not one of the 25
     (or larger number chosen by the Company) excludable Employees and former
     Employees of the Company with the largest amount of Earnings in the current
     or in any prior Plan Year.

          11.5.5    Reasonable Method.  Any reasonable and consistent method
                    -----------------
     selected by the Committee may be used to determine the value of Current
     Liabilities and Plan Assets."

     10.  By inserting the following at the end of Section 13.2:

                    "In determining Top Heavy status, nonproportional subsidies
          are considered, and proportional subsidies are ignored."

     11.  By changing the number "5" to the number "3" in Section 13.4.2.

     IN WITNESS WHEREOF, the Company has caused this amendment to be executed by
a duly authorized representative this 1st day of May, 2001.

                                    FMC CORPORATION

                                    By: /s/ Stephen F. Gates
                                        ----------------------------------
                                    Member, Employee Welfare Benefits Plan
                                    Committee

                                       5

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