UNITED STATES
                              SECURITIES AND EXCHANGE COMMISSION
                                    Washington, D.C. 20549


                                    ----------------------

                                           FORM 8-K

                                        CURRENT REPORT
                            Pursuant to Section 13 or 15(d) of the
                                Securities Exchange Act of 1934


                         

Date of report (Date of earliest event reported)      October 15, 2004                           
                                                 ----------------------------------------------



                               Marsh & McLennan Companies, Inc.
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                      (Exact Name of Registrant as Specified in Charter)



           Delaware                         1-5998                         36-2668272
------------------------------- ----------------------------- ---------------------------------
 (State or Other Jurisdiction      (Commission File Number)              (IRS Employer
      of Incorporation)                                                Identification No.)


     1166 Avenue of the Americas, New York, NY                               10036
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    (Address of Principal Executive Offices)                               (Zip Code)


Registrant's telephone number, including area code    (212) 345-5000                           
                                                   --------------------------------------------


   Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy
the filing obligation of the registrant under any of the following provisions:

|_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act
    (17 CFR 240.14d-2(b))

|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act
    (17 CFR 240.13e-4(c))









                             Section 8--Other Events


Item 8.01.  Other Events.

        On October 15, 2004, Marsh & McLennan Companies, Inc. issued a press
release announcing that Marsh Inc., its risk and insurance services subsidiary,
will immediately suspend its practice of market service agreements (MSA) with
insurance carriers.  A copy of the press release is attached to this Report
as an exhibit.


                   Section 9--Financial Statements and Exhibits


Item 9.01.  Financial Statements and Exhibits.

            (c)   Exhibits

            99.1  Press release issued October 15, 2004.







                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                        MARSH & McLENNAN COMPANIES, INC.

                                        By:  /s/ Bart Schwartz
                                             -----------------------------------
                                             Name:   Bart Schwartz
                                             Title:  Deputy General Counsel
                                                      & Corporate Secretary


Date:   October 15, 2004