Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
CABIALLAVETTA MATHIS
   2. Issuer Name and Ticker or Trading Symbol
MARSH & MCLENNAN COMPANIES, INC. [MMC] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice Chairman, Office of CEO
(Last)
(First)
(Middle)
1166 AVENUE OF THE AMERICAS		 3. Date of Earliest Transaction (Month/Day/Year)
02/12/2008
(Street)

NEW YORK, NY 10036		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/12/2008   M   2,815 (1) A $ 0 219,182.8055 (2) D  
Common Stock 02/12/2008   F   406 (1) D $ 25.755 218,776.8055 (2) D  
Common Stock - SIP               324.301 (3) I Stock Investment Plan (401K)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stk. Units -SISP (4) 12/31/2007   J(5) V 173.863     (6)   (6) Common Stock 173.863 $ 0 6,454.285 D  
Restricted Stock Units (4) 02/12/2008   M     2,815   (6)   (6) Common Stock 2,815 $ 0 94,661 D  
Restricted Stock Units - Bonus Deferral Plan (4) 02/15/2007   J(7) V 20.776     (6)   (6) Common Stock 20.776 $ 30.1 3,312.106 D  
Restricted Stock Units - Bonus Deferral Plan (4) 05/15/2007   J(7) V 20.313     (6)   (6) Common Stock 20.313 $ 30.98 3,332.419 D  
Restricted Stock Units - Bonus Deferral Plan (4) 08/15/2007   J(7) V 24.494     (6)   (6) Common Stock 24.494 $ 25.85 3,356.913 D  
Restricted Stock Units - Bonus Deferral Plan (4) 11/15/2007   J(7) V 25.533     (6)   (6) Common Stock 25.533 $ 24.98 3,382.446 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
CABIALLAVETTA MATHIS
1166 AVENUE OF THE AMERICAS
NEW YORK, NY 10036		       Vice Chairman, Office of CEO  

Signatures

 Scott Budlong, Attorney-in-Fact   02/14/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Vesting and distribution to reporting person of 2,815 shares of restricted stock units of which 406 shares were withheld by MMC to cover applicable taxes.
(2) Includes shares acquired under the MMC Employee Stock Purchase Plan and shares acquired under the MMC dividend reinvestment plan as of year end.
(4) The security converts to MMC Common Stock on a 1-for-1 basis.
(7) Dividend proceeds credited to the reporting person's account at prevailing market prices.
(3) Information reported herein is based on reporting person's Plan balance on December 31, 2007.
(5) Shares acquired by the Supplemental Savings & Investment Plan (SSIP) Custodian at prevailing market prices. Information reported herein is based on reporting person's Plan Statement as of December 31, 2007.
(6) Not Applicable

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