Dividend Declaration

Marsh & McLennan Co Inc
15 September 2005

Media Contacts:      Jim Fingeroth              Investor Contact:
Barbara Perlmutter   Kekst and Company          Mike Bischoff
MMC                  [phone]             MMC
[phone]                                  [phone]

                          MMC DECLARES QUARTERLY DIVIDEND

NEW YORK, NEW YORK, September 14, 2005 -The Board of Directors of Marsh &
McLennan Companies, Inc. (MMC) today declared a quarterly dividend of $.17 per
share on outstanding common stock, payable on November 15, 2005 to shareholders
of record on October 17, 2005.

MMC is a global professional services firm with annual revenues exceeding $12
billion. It is the parent company of Marsh, the world's leading risk and
insurance services firm; Guy Carpenter, the world's leading risk and reinsurance
specialist; Kroll, the world's leading risk consulting company; Mercer, a major
global provider of human resource and specialty consulting services; and Putnam
Investments, one of the largest investment management companies in the United
States. Approximately 60,000 employees provide analysis, advice, and
transactional capabilities to clients in over 100 countries. Its stock (ticker
symbol: MMC) is listed on the New York, Chicago, Pacific, and London stock
exchanges. MMC's website address is www.mmc.com.



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