Document:

Exhibit 10.25

FIRST AMENDMENT TO

AECOM TECHNOLOGY
CORPORATION

EXCESS BENEFIT PLAN

THIS AMENDMENT, by AECOM Technology Corporation,
hereinafter sometimes referred to as the “Company,” is made with reference to
the following facts:

Effective July 1, 1998 AECOM Technology Corporation adopted the AECOM TECHNOLOGY CORPORATION EXCESS BENEFIT PLAN, which reserves to the Board of
Directors of AECOM Technology Corporation the right to amend said Plan (Section
4.1 thereof). The Company has executed this First Amendment for the purpose of
amending said Plan in the manner hereinafter provided.

NOW, THEREFORE, the AECOM
TECHNOLOGY CORPORATION EXCESS BENEFIT PLANis hereby amended as follows, effective July 1,1998:

I.

Section 3.1 (b) is hereby amended in its entirety as follows:

“A Participant who terminates employment with the Company on or after
attaining Normal Retirement Age shall be entitled to an annual benefit which is
equal to (a) minus (b):

(a)       the Participant’s
Unlimited Pension Plan Benefit minus

(b)       the sum of (1) and (2):

(1) he Participant’s AECOM Pension Plan Benefit

(2) he Management Supplemental Executive Retirement Plan Benefit, if
any.”

II.

Section 6.1 is hereby amended to provide in its entirety as follows:

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“No Funding Obligation. The amounts accrued by a Participant
hereunder are not held in a trust or escrow account and are not secured by any
specific assets of the Company or in which the Company has an interest. This
Plan shall not be construed to require the Company to fund any of the benefits
provided hereunder nor to establish a trust for such purpose. The Company may
make such arrangements as it desires to provide for the payment of benefits.
Neither the Participant, the Spouse nor the Participant’s estate shall have any
rights against the Company with respect to any portion of the Participant’s
benefits except as a general unsecured creditor of the Company. No Participant
has an interest in his benefits until the Participant actually receives
payment. Notwithstanding the foregoing, the Company may create and fund a “rabbi
trust” (the “Trust”) with respect to this Plan. The creation and funding of
said Trust shall not create a security interest in the property of such Trust
in favor of the Participant, the Spouse or the Participant’s estate, or otherwise
cause a funding of the Plan or Trust in any manner inconsistent with the
preceding provisions of this Section 6.1. The amount of any contributions to
such Trust shall be totally discretionary as determined by the Company. Any
amount paid from such Trust to the Participant shall reduce the amount to be
paid pursuant to this Plan by the Participating Employer. In the event the
amounts paid from the Trust are insufficient to provide the full benefits
payable to the Participant under this Plan, the Participating Employer shall
pay the remainder of such benefit in accordance with the terms of this Plan. It
is the intention of the Participating Employers that this Plan and Trust be
considered unfunded for purposes of the Code and Title 1 of ERISA.”

IN WITNESS WHEREOF, the Company has
caused this First Amendment to be executed as of the dates contained herein.

	
  

  	
  AECOM TECHNOLOGY CORPORATION

  
	
   

  
	
   

  	
  By:

  	
  /s/ R. Keeffe Griffith

  
	
   

  	
   

  	
   

  
	
   

  	
  Title:

  	
  Vice President

  
	
   

  	
   

  	
   

  
	
   

  	
  Date:

  	
  9/21/98

  
				

 

 2Exhibit 10.26

SECOND
AMENDMENT TO

AECOM TECHNOLOGY CORPORATION

EXCESS BENEFIT PLAN

THIS AMENDMENT,by AECOM Technology Corporation, hereinafter sometimes referred
to as the “Company”, is made with reference to the following facts:

Effective
July 1, 1998 AECOM Technology Corporation adopted the AECOM Technology Corporation Excess Benefit Plan,(the “Plan”) which reserves to the
Board of Directors of AECOM Technology Corporation the right to amend said Plan
(Section 4.1 thereof). The Company has executed this Second Amendment for the
purpose of amending said Plan in the manner hereinafter provided.

NOW, THEREFORE,the Plan is hereby amended, effective March 1, 2003, by the
addition of the following new Section 3.8:

“3.8     In-Service Benefits

(a)       Special In-Service Benefit
for Participants age 65 and older

(4)       A Participant who has
attained age 65 may elect to receive benefits, irrespective of termination of
employment with the Company, provided

(A)      the Board of Directors
approves the right of the participant to make the election,

(B)      a written election is made
after March 31, 2003,

(C)      the election is irrevocable,

(D)      the Participant’s benefits
under the AECOM Technology Corporation Supplemental Executive Retirement Plan,
Dated January 1, 1992 (the “1992 SERP”) must be paid at the same time that
benefits are paid under this Plan,

(E)       the election specifies the
distribution date, which distribution date cannot be earlier than one year
after the date the election is made.

(5)       The benefit will be payable
accordance with the form of payment previously elected by the Participant
pursuant to Section 3.5. The benefit will be determined as if the Participant
had terminated employment with the Company on the distribution date.

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(6)       The Participant will cease
to accrue benefits under the Plan as of the distribution date.

(b)       In-Service Benefits for
Participants age 62 and over

(2)       A Participant who has

(A)      attained Normal Retirement
Age under the 1992 SERP

(B)      changed from full-time to
part-time employment status

(C)      incurred a 50% or more
reduction in compensation from the Company (and its subsidiaries) in connection
with such change to part-time status

will be deemed to have terminated employment, and
accrual of benefits under the Plan will cease. Accordingly, such a Participant
shall receive a distribution at that time in the form previously elected by the
Participant. In addition, no additional benefits shall be paid to the
Participant under this Plan after the distribution date.

(2)       For purposes of this
Section 3.8(b), compensation will include wages, salary, fees for professional
services, bonuses and other incentive compensation. Compensation will not
include distributions from this Plan or any other retirement plan maintained by
the Company. Compensation shall be determined without regard to any salary
reduction arrangement described in Code Sections 401(k), 125 or 132(f).”

IN WITNESS WHEREOF,the Company has caused this Second Amendment to be executed as of
the dates contained herein.

	
   

  	
  AECOM Technology Corporation

  
	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Eric Chen

  
	
   

  	
   

  	
   

  
	
   

  	
  Title:

  	
  General Counsel

  
	
   

  	
   

  	
   

  
	
   

  	
  Date:

  	
  5/22/2003

  

 

 9Exhibit 10.27

THIRD
AMENDMENT TO 

AECOM TECHNOLOGY CORPORATION

EXCESS
BENEFIT PLAN

THIS
AMENDMENT, by
AECOM Technology Corporation, hereinafter sometimes referred to as the “Company”,
is made with reference to the following facts:

Effective July 1, 1996 AECOM
Technology Corporation adopted the AECOM Technology
Corporation Excess Benefit Plan, (the “Plan”) which reserves to the Board of Directors of AECOM
Technology Corporation the right to amend said Plan (Section 4.1 thereof). The
Company has executed this Third Amendment for the purpose of amending said Plan
in the manner hereinafter provided.

NOW,
THEREFORE, the
Plan is hereby amended, effective April 1, 2004, by amending Section 2.20 to
read as follows:

“2.20 Unlimited
Pension Plan Benefit means a Participant’s AECOM Pension Plan Benefit

(a)                     calculated
without regard to Code Sections 401(a)(17) and 415

(b)                    calculated
without regard to the $200,000 limitation on compensation in Section 2.11(a) of
the AECOM Pension Plan, and

(c)                     calculated
without regard to Section 3.1(a)(2) of the AECOM Pension Plan, which excludes
from participation certain individuals who are eligible for the AECOM
Technology Corporation Incentive Compensation Plan.”

IN
WITNESS WHEREOF, the
Company has caused this Third Amendment to be executed as of
April 1, 2004.

	
  

  	
  AECOM Technology Corporation

  
	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Stephanie A. Hunter

  
	
   

  	
   

  	
   

  
	
   

  	
  Title:

  	
  Corporate Secretary

  
	
   

  	
   

  	
   

  
	
   

  	
  Date:

  	
  March 4, 2004Exhibit
10.28

AECOM TECHNOLOGY CORPORATION

2005 ENSR STOCK PURCHASE
PLAN

AS OF NOVEMBER 1,
2005

ARTICLE I

Scope of Plan and Definitions

1.1                               Purpose
and Scope of Plan

The AECOM Technology Corporation 2005 ENSR Stock
Purchase Plan (“Plan”) is effective as of November 1, 2005.  The purpose of the Plan is to provide certain
ENSR employees with the opportunity to invest in common stock of the Company.

1.2                               Definitions

As used in the Plan, the following capitalized terms
have the meanings set forth below, unless a different meaning is plainly
required by the context.

(a)                                  “AECOM
RSP” means the AECOM Technology Corporation Retirement & Savings Plan as
such plan may be amended from time to time.

(b)                                 “AECOM
SPP” means the AECOM Technology Corporation Stock Purchase Plan as such plan
may be amended from time to time.

(c)                                  “Beneficiary”
means the beneficiary or beneficiaries designated by a Participant under this
Plan in the form and manner prescribed by the Committee.

(d)                                 “Board”
means the Board of Directors of AECOM Technology Corporation.

(e)                                  “Committee”
means a committee appointed by the Board to administer the Plan, and any
successor committee of the Board with similar functions, and shall consist of
two or more members (or such greater number as may be required under applicable
law) each of whom shall, to the extent required by applicable law, be “non-employee
directors” within the meaning of applicable regulatory requirements, including
those promulgated under Section 16 of the Securities Exchange Act of 1934 (the “Act”).  The Board may at any time take action under
the Plan in place of the Committee, provided that a majority of the members of
the Board shall, to the extent required by applicable law, be “non-employee
directors” (within the meaning set forth above) when taking such action.

(f)                                    “Common
Stock” means the common stock of the Company.

(g)                                 “Company”
means AECOM Technology Corporation or its successor corporation.

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(h)                                 “Effective
Date” means November 1, 2005.

(i)                                     “Eligible
Employee” means ENSR employees as determined by the Company or the Committee.

(j)                                     “Eligible
Shares” means shares credited to an Employee’s account that have been held for
a minimum of five years.  Eligible Shares
do not include any Company match shares.

(k)                                  “ENSR”
means Tiger Acquisition Corp., a Delaware corporation and wholly owned
subsidiary of the Company, and each subsidiary of Tiger Acquisition Corp.

(l)                                     “Fair
Market Value” on any date means:

(1)                                  if
the Common Stock is listed or admitted to trade on a national securities exchange,
the closing price of a Share on the Composite Tape, as published in the Western
Edition of The Wall Street Journal, of the principal national securities
exchange on which such stock is so listed or admitted to trade, on such date,
or, if there is no trading of the Common Stock on such date, then the closing
price of a Share as quoted on such Composite Tape on the next preceding date on
which there was trading in the Shares;

(2)                                  if
the Common Stock is not listed or admitted to trade on a national securities
exchange, the closing price for a Share on such date, as furnished by the
National Association of Securities Dealers, Inc. (“NASD”) through the NASDAQ
National Market Reporting System or a similar organization if the NASD is no
longer reporting such information;

(3)                                  if
the Common Stock is not listed or admitted to trade on a national securities
exchange and is not reported on the National Market Reporting System, the mean
between the bid and asked price for a Share on such date, as furnished by the
NASD or a similar organization; or

(4)                                  if
the Common Stock is not listed or admitted to trade on a national securities
exchange, is not reported on the National Market Reporting System and if bid
and asked prices for the Common Stock are not furnished by the NASD or a
similar organization, the value as established by the Committee at such time
for purposes of this Plan, such value to be determined in a manner consistent
with the AECOM RSP.

(m)                               “Global
Stock Program” means the Australia Stock Investment Plan, the Hong Kong Stock
Investment Plan - B, the New Zealand Global Stock Investment Plan, the
Retirement & Savings Plan, the Global Stock Investment Plan (Singapore),
the Global Stock Investment Plan (United Arab Emirates / Qatar), and the United
Kingdom Global Stock Investment Plan.

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(n)                                 “Participant”
means an Eligible Employee who has an account under this Plan.

(o)                                 “Participating
Employer” means the Company and ENSR.

(p)                                 “Plan”
means the AECOM Technology Corporation 2005 ENSR Stock Purchase Plan as set
forth herein.

1.3                               Other
Definitional Provisions

The terms defined in Sections 1.2 and 1.3 of the Plan
shall apply equally to both singular and plural.  The masculine pronoun, whenever used, shall
include the feminine.  When used in the
Plan, the words “hereof” “herein” and “hereunder” and words of similar import
shall refer to the Plan as a whole and not to any particular provision of the
Plan, unless otherwise specified.

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ARTICLE II

Participation and Credits

2.1                               Participation

An Eligible
Employee shall become a Participant under this Plan when an account on his
behalf is first credited hereunder.

2.2                               Credits
to Participant Account

(a)                                  A
Participant may purchase Common Stock from the Company under the Plan for a
period of six months after the Effective Date of the Plan.

(b)                                 The
Participant must purchase the Common Stock at the Fair Market Value in cash.

(c)                                  The
Company shall credit to the Participant’s account the Common Stock purchased
pursuant to this Section 2.2.

(d)                                 In
addition, the Company will credit to the Participant an 18% stock match on all Common
Stock purchased by the Participant under this Plan.  For Participants with U.S. residency the
stock match will be credited to the AECOM SPP. 
For Participants with residence outside the United States, the stock
match will be delivered directly to the Participant.

2.3                               Accounts
and Account Value

(a)                                  Participants’
Accounts.  The Company shall
establish an account for each Participant to determine the amount payable on
behalf of the Participant under the Plan.

(b)                                 Account
Value.  The value of the account will
be based on the Fair Market Value used in the AECOM RSP on the quarterly
valuation of stock performed in accordance with the terms of the AECOM RSP
which coincides with or immediately precedes the date such amounts are credited
to the Participant’s account;

(c)                                  Statements.  Each Participant shall receive a statement of
the balance in his or her Account at least annually.

2.4                               Vesting

Each Participant shall be one hundred percent vested,
at all times, in the value of such Participant’s account.  Each Participant shall be one hundred percent
vested in the value of the Company match credited pursuant to Section 2.2(d) when
he becomes one hundred percent vested in the AECOM Global Stock Program, but
the Participant shall be zero percent vested until such time.

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ARTICLE III

Payment of Benefits

3.1                               Commencement
and Form of Payment Upon Termination Of Employment

(a)                                  Time
for Payment.

As soon as practicable following each Participant’s
termination of employment with all Participating Employers, the Participating
Employer by which the Participant was last employed shall pay to such
Participant, or, if such Participant is not living at the time for payment, to
such Participant’s Beneficiary, the vested amount then credited to the
Participant’s account.

(b)                                 Distributions

Any distributions to the Participant or such Participant’s Beneficiary
upon termination of employment pursuant to Section 3.1 of this Agreement shall
be subject to the Company’s bylaws, including Section 6.10, as in effect on the
date of such distribution.

3.2                               Loans
and In-service Payments and Withdrawals

(a)                                  Loans.

No Participant
shall be allowed to borrow from the Plan.

(b)                                 In-Service
Distributions.

No Participant shall be
allowed an in-service withdrawal from the Plan. 
Except as subsection (c), no withdrawal shall be allowed before a
Participant terminates employment with the Company.

(c)                                  Diversification

(i)                                     Election
to Diversify

A Participant may elect
to diversify any portion of their Eligible Shares in their accounts as
described in Section 3.2(c)(ii) below, which have been held for a minimum of
five years.

(ii)                                  Diversification
Options

To the extent allowed by
the Company, a Participant will be able to diversify their account in Shares
through one of the following options:

For Participants with
Eligible Shares having a value of at least $50,000, the Participants may sell
up to $50,000 or 20% of the Eligible

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Share value, whichever is
greater, back to the Company for cash on an annual basis; or

For Participants with
Eligible Shares having a value of less than $50,000, the Participant may sell
up to 100% of the Eligible Share value back to the Company for cash on an
annual basis.

The value of the Eligible
Shares for the diversification calculation shall be the valued as of the most
recent valuation date.  Sale and payment
will be made by the end of the quarter following the fiscal year end.

(iii)                               Right
to Reduce or Refrain from Repurchasing

The Company reserves the
right, in managing its liquidity in accordance with its credit and other debt
agreements and otherwise in a prudent fashion to reduce or refrain, from
repurchasing shares tendered under the diversification program.

(d)                                 Form
of Election.

All elections described in this Section 3.2(c) shall
be made on a form and in a manner specified by the Committee.  The Committee may prescribe additional rules
for making elections and may provide that an election is invalid if it
reasonably believes that such election may jeopardize the tax advantages
afforded by the Plan.

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ARTICLE IV

Administration of Plan

4.1                               Responsibilities
and Powers of the Committee

The Committee shall be solely responsible for the
operation and administration of the Plan and shall have all powers described in
the AECOM RSP with respect to this Plan, and such additional powers necessary
and appropriate to carry out its responsibilities in operating and
administering the Plan.  The Committee
shall have full discretion to construe and interpret the terms and provisions
of this Plan, which interpretation or construction shall be final and binding
on all parties, except as otherwise provided by law.

4.2                               Outside
Services

The Committee may engage counsel and such clerical, financial,
investment, accounting, and other specialized services as it may deem necessary
or desirable to the operation and administration of the Plan.  The Committee shall be entitled to rely upon
any opinions, reports, or other advice furnished by counsel or other
specialists engaged for that purpose and, in so relying, shall be fully protected
in any action, determination, or omission taken or made in good faith.

4.3                               Indemnification

The Company shall indemnify the Committee and each
Committee member against any and all claims, losses, damages, expenses
(including reasonable counsel fees), and liability arising from any action,
failure to act, or other conduct in the member’s official capacity, except when
due to the individual’s own gross negligence or willful misconduct.

4.4                               Claims
Procedure

The claims procedure set forth in the AECOM RSP is
incorporated herein by reference.

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ARTICLE V

Amendment and Termination

5.1                               Amendment

The Company reserves the right at any time and from
time to time, and retroactively if deemed necessary or appropriate, to modify
or amend in whole or in part any or all of the provisions of the Plan.

5.2                               Termination

The Plan is purely voluntary on the part of the
Company.  The Company may terminate the
Plan at any time.

5.3                               Effect
of Amendment or Termination

Any amendment, modification, or termination shall not
reduce, alter, or impair any rights under the Plan as to amounts credited to
the accounts of Participants under the Plan as of the date of such amendment,
modification or termination.  Unless the
Company determines otherwise, each Participating Employer shall pay its
Participants the value of their respective accounts upon termination of the
Plan, in a lump sum, in the manner prescribed in Section 3.1.

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ARTICLE
VI

Miscellaneous Provisions

6.1                               General
Provisions

(a)                                  This
Plan and the issuance or transfer of shares of Common Stock (and/or the payment
of money) pursuant thereto are subject to all applicable Federal and state
laws, rules and regulations, to the rights, preferences, limitations, and
restrictions set forth in the Company’s Certificate of Incorporation and
Bylaws, and to such approvals by any regulatory or governmental agency
(including without limitation “no action” positions of the Securities and
Exchange Commission) which may, in the opinion of counsel for the Company, be
necessary or advisable in connection therewith. 
Without limiting the generality of the foregoing, no shares shall be
issued by the Company, nor cash payments made by the Company, unless and until
all legal requirements applicable to the issuance or payment have, in the
opinion of counsel to the Company, been complied with.  In connection with any stock issuance or
transfer, the person acquiring the shares shall, if requested by the Company,
give assurances satisfactory to counsel to the Company in respect to such
matters as the Company may deem desirable to assure compliance with all
applicable legal requirements and the Company’s Certificate of Incorporation
and Bylaws.

(b)                                 The
Committee may specify such provisions as it deems appropriate for payment under
the Plan upon the occurrence of any of the following events (each a “Corporate
Event”):

(i)                                     Approval
by the stockholders of the Company of the dissolution or liquidation of the
Company;

(ii)                                  Approval
by the stockholders of the Company of an agreement to merge or consolidate, or
otherwise reorganize, with or into one or more entities of which less than 50%
of the outstanding voting securities of the surviving or resulting entity are,
or are to be, owned by former stockholders of the Company (excluding from the
term “former stockholders” a stockholder who is, or as a result of the
transaction in question becomes, an “affiliate,” as that term is used in the
Act and the Rules promulgated thereunder, of any party to such merger,
consolidation or reorganization); or

(iii)                               Approval
by the stockholders of the Company of the sale of substantially all of the
Company’s business and/or assets to a person or entity that is not a
subsidiary.

For purposes of this paragraph (b), the term “subsidiary”
shall mean any corporation or other entity a majority or more of whose
outstanding voting stock or voting power is beneficially owned directly or
indirectly by the Company.

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6.2                               Expenses

Each Participating Employer shall pay all costs and
expenses incurred in operating and administering the Plan attributable to that
Participating Employer; provided that the Company may in its discretion pay
some or all costs and expenses of a Participating Employer.

6.3                               No
Right of Employment

Nothing contained herein nor any action taken under
the provisions hereof shall be construed as giving any Participant the right to
be retained in the employ of any Participating Employer.

6.4                               Withholding

Each Participating Employer shall withhold from any
payment hereunder any required amount of income and other taxes.

6.5                               Headings

The headings of the sections in the Plan are placed
herein for convenience of reference; in the case of any conflict, the text of
the Plan, rather than such heading, shall control.

6.6                               Construction

Except to the extent governed by federal law, the Plan
shall be construed, regulated, and administered in accordance with the laws of
the State of California.  If any
provision shall be held by a court of competent jurisdiction to be invalid and
unenforceable, the remaining provisions of this Plan shall continue to be fully
effective.  Each provision of the Plan
shall be administered, interpreted and construed to carry out such intention,
and any provision that cannot be so administered, interpreted and construed
shall, to that extent, be disregarded.

IN WITNESS WHEREOF,
the Company has caused this Plan to be executed as of October     ,
2005.

 

	
   

  	
  AECOM TECHNOLOGY CORPORATION

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  

 

 10

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