Document:

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                                  EXHIBIT 10-37

                                 FIRST AMENDMENT
                                       OF
                         USG CORPORATION RETIREMENT PLAN

            (As Amended and Restated Effective as of January 1, 1999)

          WHEREAS, USG Corporation Retirement Plan (the "plan") is maintained by
USG Corporation (the "company"), which plan was amended and restated on December
29, 1999, effective as of January 1, 1999; and

          WHEREAS, it now is deemed desirable and in the best interests of the
employers under the plan and their employees to further amend the plan;

          NOW, THEREFORE, pursuant to the amending power reserved to the company
under subsection 14.1 of the plan, the plan is further amended as follows:

          1. By adding the following at the end of subsection 7.8 of the Plan,
effective January 1, 1999:

     "The actuarial increase described in the preceding sentence shall apply to
     periods during which a participant is in suspendible service under Section
     203(a)(3)(B) of ERISA."

          2. By adding the following at the end of subsection 8.6 of the plan,
effective January 1, 1999:

     "The accrued benefit of a 'Section 401(a)(17) employee' (as defined in
     Treasury Regulation 1.401(a)(17)-1(e)(2)(i)) shall be determined in
     accordance with Treasury Regulation 1.401(a)(17)-1(e)."
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          3. By adding the following new subsection 8.15 to the Plan, effective
January 1, 1999:

     "8.15 Contribution Limitations

          For each plan year, the annual addition (as defined below) to a
     participant's accounts under all defined contribution plans maintained by
     the company shall not exceed the lesser of $30,000 (or such greater amount
     as may be determined by the Commissioner of Internal Revenue for the
     calendar year which begins with or within that plan year) or 25 percent of
     the participant's Section 415 compensation (as defined below) during that
     plan year. The term 'annual addition' for any plan year means the sum of
     the company contributions, participant contributions and remainders
     credited to a participant's accounts for that year. Any participant
     contributions which cannot be allocated to a participant because of the
     foregoing limitations (and any gains attributable thereto) shall be
     returned to him. If, as a result of the allocation of forfeitures or a
     reasonable error in estimating a participant's compensation, company
     contributions cannot be allocated to a participant because of the foregoing
     limitations, such amounts shall be applied to reduce company contributions
     in succeeding plan years, in order of time. A participant's 'Section 415
     compensation' means his total cash compensation for services rendered to
     the company as an employee, determined in accordance with Section 415(c)(3)
     of the Internal Revenue Code and the regulations thereunder, including any
     elective deferral (as defined in Section 402(g)(3) of the Internal Revenue
     Code) and any amount contributed or deferred by the company at the
     participant's election which is excludable from income under Section 125 or
     457 of the Internal Revenue Code."

          4. By adding the following news subsection 8.16 to the Plan, effective
January 1, 1999:

     "8.16 Benefit Limitations

          Notwithstanding any other provisions of the plan, a participant's
     monthly retirement income or monthly deferred vested benefit as of the end
     of any plan year may not exceed an amount which is equivalent to a monthly
     retirement income or deferred vested benefit payable for life only (not
     taking into account that portion of any joint and survivor annuity which
     constitutes a qualified joint and survivor annuity under the Internal
     Revenue Code), equal to $7,500 (or such greater amount as may be determined
     by the Commissioner of Internal Revenue for calendar years which begin with
     or within that plan year). If payment of a participant's monthly retirement

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     income or deferred vested benefit begins before he attains the Social
     Security Retirement Age, such limitation shall be reduced so that it is
     equivalent to a monthly benefit of $7,500 commencing at the Social Security
     Retirement Age. If payment of a participant's monthly retirement income
     begins after he attains the Social Security Retirement Age, such limitation
     shall be increased so that it is equivalent to a monthly benefit of $7,500
     commencing at the Social Security Retirement Age. For purposes of adjusting
     amounts under this subsection 8.16, the interest rate assumption and
     mortality shall be determined in accordance with Paragraph A-8 of Exhibit
     A. In the case of a participant with less than 10 years of participation in
     the plan, the foregoing limitation shall be multiplied by a fraction, the
     numerator of which shall be the participant's number of full and fractional
     years of participation in the plan (but not less than 1) and the
     denominator of which shall be 10. In no event shall a participant's monthly
     retirement income as of the end of any plan year exceed 100% of his average
     compensation for his high three years. A participant's 'average
     compensation for his high three years' means his average monthly
     compensation during the period of three consecutive calendar years of his
     service with the employers (or during his actual number of years of service
     if less than three such years) in which his aggregate compensation from the
     employers was the greatest. For purposes of this subsection 8.16, a
     participant's 'compensation' means his total cash compensation for services
     rendered to the employers as an employee, determined in accordance with
     Section 415(c)(3) of the Internal Revenue Code and the regulations
     thereunder. The provisions of this subsection 8.16 shall not reduce the
     monthly retirement income or deferred vested benefit of any participant
     below such participant's accrued benefit as of December 31, 1986
     (determined under the terms of the plan as in effect on May 5, 1986 as
     though the participant had terminated employment on December 31, 1986). The
     accrued benefit of any participant that exceeds the benefit limitations
     under Section 415 of the Internal Revenue Code as amended by the Tax Reform
     Act of 1986 (including the 'current accrued benefit,' as described in Q&A
     12 of IRS Notice 87-21) shall be reduced, as of the first day of the first
     limitation year beginning after December 31, 1986, to the level permitted
     under the Tax Reform Act of 1986.

          5. By adding the following at the end of subsection 18.7 of the Plan,
effective January 1, 1999:

     "The aggregate actual contributions for retiree medical benefits, when
     added to the actual contributions for life insurance under the plan, are
     limited to 25 percent of the total actual contributions made to the plan

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<PAGE>
     (other than contributions to fund past service credits) after the later of
     the adoption or effective date of the Post-Retirement Medical Fund."

          6. By adding the following Paragraph at the end of the Supplement A of
the Plan, effective January 1, 1999:

          "A-8. Special Provisions Effective Under The Small Business Job
     Protection Act of 1996:

          (1) In General: As provided in the Small Business Job Protection Act
     of 1996, a Participant's projected annual benefit, 'annual benefit,' and
     compliance with Code Section 415's benefit limitations shall be determined
     in accordance with Revenue Ruling 98-1, and specifically Q&A-7 and Q&A-8.

          (2) For purposes of applying Code Section 415(b) to a benefit that is
     not payable in the form of an annual straight life annuity within the
     meaning of Code Section 415(b)(2)(A) and that is not subject to Code
     Section 417(e)(3), the determination as to whether such a benefit satisfies
     the Code Section 415(b) limitations is made by comparing the equivalent
     annual benefit determined in Step 1 below with the lesser of the
     age-adjusted dollar limit determined in Step 2 below and the Code Section
     415(b) compensation limitation described in Step 3 below:

               Step 1:  Under Code Section 415(b)(2)(B), determine the annual
          benefit in the form of a straight life annuity commencing at the same
          age that is actuarially equivalent to the plan benefit. In general,
          Code Section 415(b)(2)(E)(i) and (v) require that the equivalent
          annual benefit be the greater of the equivalent annual benefit
          computed using the interest rate and mortality table, or tabular
          factor, specified in the plan for actuarial equivalence for the
          particular form of benefit payable (plan rate and plan mortality
          table, or plan tabular factor, respectively) and the equivalent annual
          benefit computed using a 5 percent interest rate assumption and the
          applicable mortality table. This step does not apply to a benefit that
          is not required to be converted to a straight life annuity pursuant to
          Code Section 415(b)(2)(B) (for example, a qualified joint and survivor
          annuity).

               Step 2:  Under Code section 415(b)(2)(C) or (D), determine the
          Code Section 415(b) dollar limitation that applies at the age the
          benefit is payable (age-adjusted dollar limit). The age-adjusted
          dollar limit is the annual benefit that is actuarially equivalent to
          an

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          annual benefit equal to Code Section 415(b) dollar limitation payable
          at the participant's Social Security Retirement Age.

          If the age at which the benefit is payable is 62 or greater, and less
          than the participant's Social Security Retirement Age, the
          age-adjusted dollar limit is determined by reducing the Code Section
          415(b) dollar limitation at the participant's Social Security
          Retirement Age using adjustment factors that are consistent with the
          factors used to reduce old-age insurance benefits under Social
          Security Act. Pursuant to Q&A 5 of IRS Notice 87-21, the Code section
          415(b) dollar limitation at the participant's Social Security
          Retirement Age is reduced by 5/9 of 1 percent for each of the first 36
          months by which benefits commence before the month in which the
          participant's Social Security Retirement Age is attained and by 5/12
          of 1 percent for each additional month.

          If the age at which the benefit is payable is less than 62, the
          age-adjusted dollar limit is determined by reducing the age-adjusted
          dollar limit at age 62 on an actuarially equivalent basis. In general,
          Code Section 415(b)(2)(E)(ii) and (v) require that the reduced
          age-adjusted dollar limit be the lesser of the equivalent amount
          computed using the plan rate and plan mortality table (or plan tabular
          factor) used for actuarial equivalence for early retirement benefits
          under the plan and the amount computed using 5 percent interest and
          the applicable mortality table prescribed under Revenue Ruling 95-6
          (used to the extent described in A&A-6 of Revenue Ruling 98-1 which
          provides that for purposes of adjusting any limitation under Code
          Section 415(b)(2)(C) or (D) that, to the extent a forfeiture does not
          occur upon death, the mortality decrement may be ignored prior to age
          62 and must be ignored after Social Security Retirement Age).

          If the age at which the benefit is payable is greater than the
          participant's Social Security Retirement Age, the age-adjusted dollar
          limit is determined by increasing the Code Section 415(b) dollar
          limitation of the participant's Social Security Retirement Age on an
          actuarially equivalent basis. In general, Code Section 415(b)(2)(E)(i)
          and (v) require that the increased age-adjusted dollar limit be the
          lesser of the equivalent amount computed using the plan rate and plan
          mortality table (or plan tabular factor) used for actuarial
          equivalence for late retirement benefits under the plan and equivalent
          amount computed using 5 percent interest and applicable mortality
          table (used to the extent described in Q&A-6, as described in the
          prior paragraph).

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               Step 3:  Determine the participant's Code Section 415(b)
          compensation limitation. This limitation is equal to the participant's
          compensation averaged over the consecutive three-year period producing
          the highest average, as provided in Code section 415(b)(3).

     The equivalent annual benefit determined in Step 1 shall be no greater than
     the lesser of the age-adjusted dollar limit determined in Step 2 and the
     Code Section 415(b) compensation limitation determined in Step 3.

          (3) For purposes of applying Code Section 415(b)(2)(B) to a benefit
     that is payable in a form subject to Code 417(e)(3), the determination of
     the equivalent annual benefit is the same as in Step 1 of subsection (2)
     above, except that under Code Section 415(b)(2)(E)(ii), the applicable
     interest rate under Q&A-5 of Revenue Ruling 98-1 (i.e. 'GATT interest
     rates') is substituted for the 5 percent interest rate under Code Section
     415(b)(E)(i). Thus, the equivalent annual benefit must be the greater of
     the equivalent annual benefit computed using the plan rate and plan
     mortality table (or plan tabular factor) and the equivalent annual benefit
     computed using the applicable interest rate and mortality table.

          (4) The changes made to Code Section 415(b)(2)(E) apply to all Plan
     benefits, including benefits accrued before the first limitation year
     beginning after December 31, 1994.

          (5) The limitations of this Paragraph A-8 shall be applied to 'old-law
     benefits' (as defined in Revenue Ruling 98-1) using Method 3 of Q&A 1 of
     such Revenue Ruling."

          IN WITNESS WHEREOF, the company has caused these presents to be signed
by its officer thereunto duly authorized this 22nd day of May, 2001.

                                        USG CORPORATION

                                        By:
                                            ------------------------------------

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Exhibit 10.1

MOTOROLA, INC.

AWARD DOCUMENT

For the

[Name of Plan]

Terms and Conditions Related to Employee Nonqualified Stock Options

	 	 	 	 	 	 	 
	Recipient:

	 	Edward J. Zander
	 	Date of Expiration:
	 	 
	 
	 	 	 	 	 	 
	Commerce ID#:

	 	 	 	Number of Options:
	 	 
	 
	 	 	 	 	 	 
	Date of Grant:

	 	 	 	Exercise Price:
	 	 

Motorola, Inc. (“Motorola”) is pleased to grant you options to purchase shares of Motorola’s common
stock under the [Name of Plan] (the “Plan”). The number of options (“Options”) awarded to you and
the Exercise Price per Option, which is the Fair Market Value on the Date of Grant, are stated
above. Each Option entitles you to purchase one share of Motorola’s common stock on the terms
described below and in the Plan.

Vesting and Exercisability

You cannot exercise the Options until they have vested.

Regular Vesting – The Options will vest in accordance with the following schedule (subject to the
other terms hereof):

Percent            Date

Special Vesting – You may be subject to the Special Vesting Dates described below if your
employment or service with Motorola or a Subsidiary (as defined below) terminates.

Exercisability – You may exercise Options at any time after they vest and before they expire as
described below.

Expiration

All Options expire on the earlier of (1) the Date of Expiration as stated above or (2) any of the
Special Expiration Dates described below. Once an Option expires, you no longer have the right to
exercise it.

Special Vesting Dates and Special Expiration Dates

There are events that cause your Options to vest sooner than the schedule discussed above or to
expire sooner than the Date of Expiration as stated above. Those events are as follows:

Retirement – If your employment or service with Motorola or a Subsidiary is ended because of your
Retirement, all your vested Options will then expire on the earlier of eighteen months following
the ending of your employment or service because of your Retirement or the Date of Expiration
stated above. Retirement means (only for purposes of this Option) your retirement from Motorola or
a Subsidiary as follows:

	 	•  	Retiring at or after age 65, without regard to years of service.

 

 

Disability – If your employment or service with Motorola or a Subsidiary is terminated because of
your Total and Permanent Disability (as defined below), Options that are not vested will
automatically become fully vested upon your termination of employment or service. All your Options
will then expire on the earlier of the first anniversary of your termination of employment or
service because of your Total and Permanent Disability or the Date of Expiration stated above.
Until that time, the Options will be exercisable by you or your guardian or legal representative.

Death – If your employment or service with Motorola or a Subsidiary is terminated because of your
death, Options that are not vested will automatically become fully vested upon your death. All
your Options will then expire on the earlier of the first anniversary of your death or the Date of
Expiration stated above. Until that time, with written proof of death and inheritance, the Options
will be exercisable by your legal representative, legatees or distributees.

Change In Control – If there is a Change In Control of Motorola (as defined in the Plan), all the
unvested Options will automatically become fully vested as described in the Plan. If Motorola or a
Subsidiary terminates your employment or service other than for Serious Misconduct within two years
of consummation of a Change In Control, all of your vested Options will be exercisable until the
Date of Expiration stated above.

Change in Employment in Connection with a Divestiture – If you accept employment with another
company in direct connection with the sale, lease, outsourcing arrangement or any other type of
asset transfer or transfer of any portion of a facility or any portion of a discrete organizational
unit of Motorola or a Subsidiary (a “Divestiture”), all of your unvested Options will automatically
expire upon termination in direct connection with a Divestiture and your vested Options will expire
12 months after such Divestiture or such shorter period remaining until expiration as set forth
above.

Termination of Employment or Service Entitling you to Severance Benefits Under Section 5(a) of your
Employment Agreement – If your employment or service with Motorola or a Subsidiary is terminated in
a manner entitling you to severance benefits under Section 5(a)(i) of your Employment Agreement
with Motorola, dated as of December 15, 2003 (the “Employment Agreement”), your Options will be
treated in the manner set forth in Section 5(a)(iii) of the Employment Agreement.

Termination of Employment or Service Because of Serious Misconduct or by you other than for Good
Reason – If Motorola or a Subsidiary terminates your employment or service because of Serious
Misconduct (as defined below) or if you voluntarily terminate employment without Good Reason
including by a Notice of Non-Renewal (as such terms are defined in your Employment Agreement), all
of your Options (vested and unvested) expire upon your termination.

Termination of Employment or Service by Motorola as a Result of a Notice of Non-Renewal – If
Motorola terminates your employment or service as a result of a Notice of Non-Renewal (as defined
in your Employment Agreement), all of your unvested Options will automatically expire upon
termination and your vested Options will expire twelve months after your termination of employment
or such shorter period remaining until expiration as set forth above.

Leave of Absence – If you take a Leave of Absence from Motorola or a Subsidiary that your employer
has approved in writing in accordance with your employer’s Leave of Absence Policy and which does
not constitute a termination of employment as determined by Motorola or a Subsidiary the following
will apply:

Vesting of Options – Options will continue to vest in accordance with the vesting schedule set
forth above.

Exercising Options – You may exercise Options that are vested or that vest during the leave of
absence.

Effect of Termination of Employment or Service – If your employment or service is terminated during
the Leave of Absence, the treatment of your Options will be determined as described under “Special
Vesting Dates and Special Expiration Dates” above.

Other Terms

Method of Exercising – You must follow the procedures for exercising options established by

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Motorola from time to time. At the time of exercise, you must pay the Exercise Price for all of
the Options being exercised and any taxes that are required to be withheld by Motorola or a
Subsidiary in connection with the exercise. Options may not be exercised for less than 50 shares
unless the number of shares represented by the Option is less than 50 shares, in which case the
Option must be exercised for the remaining amount.

Transferability – Unless the Committee provides, Options are not transferable other than by will or
the laws of descent and distribution.

Tax Withholding – Motorola or a Subsidiary is entitled to withhold an amount equal to the required
minimum statutory withholding taxes for the respective tax jurisdictions attributable to any share
of common stock deliverable in connection with the exercise of the Options. You may satisfy any
withholding obligation in whole or in part by electing to have Motorola retain Option shares having
a Fair Market Value on the date of exercise equal to the minimum amount required to be withheld.

Definition of Terms

If a term is used but not defined, it has the meaning given such term in the Plan.

“Fair Market Value” is the closing price for a share of Motorola common stock on the last trading
day before the date of grant or date of exercise, whichever is applicable. The official source for
the closing price is the New York Stock Exchange Composite Transaction as reported in the Wall
Street Journal, Midwest edition.

“Serious Misconduct” means any misconduct identified as a ground for termination in the Motorola
Code of Business Conduct, or the human resources policies, or other written policies or procedures,
including the conduct described as “Cause” under your Employment Agreement.

“Subsidiary” means an entity of which Motorola owns directly or indirectly at least 50% and that
Motorola consolidates for financial reporting purposes.

“Total and Permanent Disability” means “Disability” as defined in your Employment Agreement.

Consent to Transfer Personal Data

By accepting this award, you voluntarily acknowledge and consent to the collection, use, processing
and transfer of personal data as described in this paragraph. You are not obliged to consent to
such collection, use, processing and transfer of personal data. However, failure to provide the
consent may affect your ability to participate in the Plan. Motorola, its Subsidiaries and your
employer hold certain personal information about you, that may include your name, home address and
telephone number, date of birth, social security number or other employee identification number,
salary, salary grade, hire data, nationality, job title, any shares of stock held in Motorola, or
details of all options or any other entitlement to shares of stock awarded, canceled, purchased,
vested, or unvested, for the purpose of managing and administering the Plan (“Data”). Motorola
and/or its Subsidiaries will transfer Data amongst themselves as necessary for the purpose of
implementation, administration and management of your participation in the Plan, and Motorola
and/or any of its Subsidiaries may each further transfer Data to any third parties assisting
Motorola in the implementation, administration and management of the Plan. These recipients may be
located throughout the world, including the United States. You authorize them to receive, possess,
use, retain and transfer the Data, in electronic or other form, for the purposes of implementing,
administering and managing your participation in the Plan, including any requisite transfer of such
Data as may be required for the administration of the Plan and/or the subsequent holding of shares
of stock on your behalf to a broker or other third party with whom you may elect to deposit any
shares of stock acquired pursuant to the Plan. You may, at any time, review Data, require any
necessary amendments to it or withdraw the consents herein in writing by contacting Motorola;
however, withdrawing your consent may affect your ability to participate in the Plan.

Acknowledgement of Discretionary Nature of the Plan; No Vested Rights

You acknowledge and agree that the Plan is discretionary in nature and limited in duration, and may
be amended, cancelled, or terminated by Motorola or a Subsidiary, in its sole discretion, at any
time. The grant of awards under the Plan is a one-time benefit and does not create any contractual
or other right to receive an award in the future. Future

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grants, if any, will be at the sole discretion of Motorola, including, but not limited to, the
timing of any grant, the amount of the award, vesting provisions, and the exercise price.

Substitute Stock Appreciation Right

Motorola reserves the right to substitute a Stock Appreciation Right for your Option in the event
certain changes are made in the accounting treatment of stock options. Any substitute Stock
Appreciation Right shall be applicable to the same number of shares as your Option and shall have
the same Date of Expiration, Exercise Price, and other terms and conditions. Any substitute Stock
Appreciation Right may be settled only in Common Stock.

Acceptance of Terms and Conditions

By accepting the Options, you agree to be bound by these terms and conditions, the Plan and any and
all rules and regulations established by Motorola in connection with awards issued under the Plan.
To the extent of any inconsistency between the terms of this Award Document and the terms of your
Employment Agreement, the terms of the Employment Agreement shall govern, except as set forth in
the immediately following sentence. To the extent of any inconsistency between the terms of the
accompanying Stock Option Consideration Agreement and your Employment Agreement, the terms of the
Stock Option Consideration Agreement shall govern.

Other Information about Your Options and the Plan

You can find other information about options and the Plan on the Motorola website
http://myhr.mot.com/finances/stock_options/index.jsp If you do not have access to the website,
please contact Motorola Global Rewards, 1303 E. Algonquin Road, Schaumburg, IL 60196 USA;
GBLRW01@Motorola.com; 847-576-7885; for an order form to request Plan documents.

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