MMC to Hold Investor Call on November 8 to Disc...

MMC
                  Marsh & McLennan Companies, Inc. (MMC) plans to announce third-quarter results
on Thursday, November 8, 2007 in a news release to be issued before the market
opens. The release will also be available on MMC's website at www.mmc.com.

Michael G. Cherkasky, president and chief executive officer of MMC, and Matthew
B. Bartley, chief financial officer, will lead a discussion with investors on
financial results, including a question and answer period, at 8:30 a.m. Eastern
Time on November 8.

To participate in the teleconference, please dial 877-723-9520. Callers from
outside the United States should dial 719-325-4831. The access code for both
numbers is 4218483. The live audio webcast may be accessed at www.mmc.com. A
replay of the webcast will be available approximately two hours after the event
at the same web address.

MMC (Marsh & McLennan Companies) is a global professional services firm
providing advice and solutions in the areas of risk, strategy and human capital.
It is the parent company of a number of the world's leading risk experts and
specialty consultants, including Marsh, the insurance broker and risk advisor;
Guy Carpenter, the risk and reinsurance specialist; Kroll, the risk consulting
firm; Mercer, the provider of HR and related financial advice and services; and
Oliver Wyman, the management consultancy. With more than 54,000 employees
worldwide and annual revenue of approximately $11 billion, MMC provides
analysis, advice, and transactional capabilities to clients in more than 100
countries. Its stock (ticker symbol: MMC) is listed on the New York, Chicago,
and London stock exchanges. MMC's website address is www.mmc.com.

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MMC
Media:
Christine Walton, 212-345-0675
[e-mail]
or
Investor:
Mike Bischoff, 212-345-5470
[e-mail]
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