Exhibit 10.1

THIRD AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT

THISTHIRD AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT(the "Agreement") is made and entered into
as of this 14th day of September 2007, by and between SUNTRUST BANK, in its capacity as Administrative Agent, Issuing Bank and Swingline Lender for the Lenders (as such terms are defined
below), WATSON WYATT & COMPANY, a Delaware corporation (the "Borrower") and the several banks and other financial institutions and lenders party hereto.

RECITALS

A.    Pursuant
to that certain Amended and Restated Revolving Credit Agreement dated as of July 11, 2005, by and between the Borrower, the financial institutions and
lenders party thereto (the "Lenders"), SunTrust Bank, in its capacity as administrative agent for the Lenders (the "Administrative Agent"), as issuing lender (the "Issuing Lender") and as swingline
lender (the "Swingline Lender") (as amended pursuant to that certain Amendment to Credit Agreement dated September 30, 2005 and that certain Amendment to Credit Agreement dated as of
June 30, 2007, the "Credit Agreement"), the Lenders have agreed to make Revolving Loans from time to time in a principal amount of up to $300,000,000. Capitalized terms not otherwise defined
herein shall have the meanings given such terms in the Credit Agreement.

B.    The
Borrower has requested that the Lenders make certain amendments to the Credit Agreement.

C.    The
Lenders are willing to make certain amendments to the Credit Agreement on the terms and conditions set forth herein.

AGREEMENT

In consideration of the Recitals and of the mutual promises and covenants contained herein, the Administrative Agent, Issuing Bank, Swingline Lender, Lenders
party hereto and the Borrower agree as follows:

1.Amendment to Credit Agreement.



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2.Representations and Warranties.    The Borrower hereby represents and warrants to the
Lenders as follows:



3.Effect and Construction of Agreement.Except as expressly provided herein, the Credit
Agreement and the Loan Documents shall remain in full force and effect in accordance with their respective terms, and this Agreement shall not be construed to:



In
the event of any inconsistency between the terms of this Agreement and the Credit Agreement or any of the other Loan Documents, this Agreement shall govern. Except as expressly modified and
superseded by this Agreement, the terms and provisions of the Credit Agreement and the other Loan Documents are ratified and confirmed and shall continue in full force and effect. Borrower agrees that
the Credit Agreement as amended hereby and the other Loan Documents shall continue to be legal, valid, binding and enforceable in accordance with their respective terms. The Borrower acknowledges that
it has consulted with counsel and with such other experts and advisors as it has deemed necessary in connection with the negotiation, execution and delivery of this Agreement. This Agreement shall be
construed without regard to any presumption or rule requiring that it be construed against the party causing this Agreement or any part hereof to be drafted.

4.Miscellaneous.



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IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the day and year first above written.

| |  | SUNTRUST BANK,as Administrative Agent, as Issuing Lender, as a Lender and as the Swingline Lender
| |  | -------------------------------------------------------------------------------------------------
| |  | By:                                                                                              
| |  | WATSON WYATT & COMPANY                                                                           
| |  | By:                                                                                              

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| |  | US BANK, NATIONAL ASSOCIATION
| |  | -----------------------------
| |  | By:                          
| |  |                              
| |  |                              

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| |  | COMERICA BANK
| |  | -------------
| |  | By:          
| |  |              
| |  |              

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| |  | MANUFACTURERS AND TRADERS TRUST COMPANY
| |  | ---------------------------------------
| |  | By:                                    
| |  |                                        
| |  |                                        

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| |  | HSBC BANK USA, NA
| |  | -----------------
| |  | By:              
| |  |                  
| |  |                  

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| |  | COMMERZBANK AG, NEW YORK AND GRAND CAYMAN BRANCHES
| |  | --------------------------------------------------
| |  | By:                                               
| |  |                                                   
| |  |                                                   
| |  | By:                                               
| |  |                                                   
| |  |                                                   

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| |  | SUMITOMO MITSUI BANKING CORPORATION
| |  | -----------------------------------
| |  | By:                                
| |  |                                    
| |  |                                    

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| |  | NATIONAL CITY BANK
| |  | ------------------
| |  | By:               
| |  |                   
| |  |                   

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| |  | MIZUHO CORPORATE BANK, LTD.
| |  | ---------------------------
| |  | By:                        
| |  |                            
| |  |                            

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| |  | THE NORINCHUKIN BANK, NEW YORK BRANCH
| |  | -------------------------------------
| |  | By:                                  
| |  |                                      
| |  |                                      

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ACKNOWLEDGEMENT, CONSENT AND RATIFICATION

Each of the undersigned: (i) consent and agree to this Agreement; and (ii) agree that the Loan Documents to which it is a party shall remain in full
force and effect and shall continue to be the legal, valid and binding obligation of such party enforceable against it in accordance with their respective terms.

| |  | WATSON WYATT WORLDWIDE, INC. (formerly Watson Wyatt & Company Holdings)
WATSON WYATT INSURANCE CONSULTING, INC.
WYATT DATA SERVICES, INC.
WATSON WYATT INTERNATIONAL, INC.
| |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |  | By:                                                                                                                                                                       
| |  | WATSON WYATT INVESTMENT CONSULTING, INC.                                                                                                                                  
| |  | By:                                                                                                                                                                       
| |  |                                                                                                                                                                           
| |  |                                                                                                                                                                           

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Schedule 4(j)  To  Third Amendment to Amended and Restated Credit Agreement

Required Lenders

REQUIRED LENDER PERCENTAGE

|Lender                                            |  | Revolving
Commitment |                | Required Lender
Percentage Held |              | Lenders Agreeing to Agreement
(insert % from prior column if Lender
signs this Agreement then total
percentages in this column) |             
|------------------------------------------------- |  | -------------------- | -------------- | ------------------------------- | ------------ | ------------------------------------------------------------------------------------------------------------------------------- | ------------
|SunTrust Bank                                     |  | $                    | 55,000,000     |                                 | 18.333333333 | %                                                                                                                               | 18.333333333
|US Bank, National Association                     |  | $                    | 35,000,000     |                                 | 11.666666667 | %                                                                                                                               | 11.666666667
|Comerica Bank                                     |  | $                    | 35,000,000     |                                 | 11.666666667 | %                                                                                                                               | 11.666666667
|Manufacturers and Traders Trust Company           |  | $                    | 35,000,000     |                                 | 11.666666667 | %                                                                                                                               | 11.666666667
|HSBC Bank USA, NA                                 |  | $                    | 35,000,000     |                                 | 11.666666667 | %                                                                                                                               | 11.666666667
|Commerzbank AG, New York and rand Cayman Branches |  | $                    | 25,000,000     |                                 | 8.333333333  | %                                                                                                                               |             
|Summitomo Mitsui Banking Corporation              |  | $                    | 25,000,000     |                                 | 8.333333333  | %                                                                                                                               | 8.333333333 
|National City Bank                                |  | $                    | 20,000,000     |                                 | 6.666666667  | %                                                                                                                               |             
|Mizuho Corporate Bank, Ltd.                       |  | $                    | 20,000,000     |                                 | 6.666666667  | %                                                                                                                               | 6.666666667 
|The Norinchukin Bank, New York Branch             |  | $                    | 15,000,000     |                                 | 5.000000000  | %                                                                                                                               |             
|TOTAL                                             |  | $                    | 300,000,000.00 |                                 | 100.00       | %                                                                                                                               | 80.00       

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