PDF of Press Release

NEW YORK, April 23, 2008 — Marsh & McLennan Companies, Inc. (MMC) plans to announce first quarter 2008 results on Wednesday, May 7, 2008 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.

Brian Duperreault, president and chief executive officer of MMC, and Matthew B. Bartley, executive vice president and chief financial officer, will lead a discussion with investors on financial results at 8:30 a.m. Eastern Time on May 7. The discussion will include a question-and-answer period.

To participate in the teleconference, please dial 877 874 1569. Callers from outside the United States should dial 719 325 4805. The access code for both numbers is 7277403. 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 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; Mercer, the provider of HR and related financial advice and services; Oliver Wyman, the management consultancy; and Kroll, the risk consulting firm. With more than 55,000 employees worldwide and annual revenue exceeding $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.