Investor call re 1Q Results

Marsh & McLennan Co Inc
19 April 2006



News Release

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


                 MMC TO HOLD INVESTOR CALL ON MAY 3 TO DISCUSS

                           FIRST QUARTER 2006 RESULTS


NEW YORK, NEW YORK, April 19, 2006-Marsh & McLennan Companies, Inc. (MMC) plans
to announce first quarter 2006 results on Wednesday, May 3, 2006 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 M.
Michele Burns, executive vice president and chief financial officer, will lead a
discussion with investors on financial results, including a question and answer
period, at 10:00 a.m. Eastern Time on May 3.


To participate in the teleconference, please dial [phone]. Callers from
outside the United States should dial [phone]. The access code for both
numbers is 3141019. The audio webcast (which will be listen-only) may be
accessed at www.mmc.com. A replay of the webcast will be available beginning
approximately two hours after the event at the same web address.


MMC is a global professional services firm with annual revenues of approximately
$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 55,000 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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