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NEW YORK, May 6, 2008 — Marsh & McLennan Companies, Inc. (MMC) will webcast its 2008 annual meeting of shareholders on Thursday, May 15, 2008 at 10:00 a.m. Eastern Time.

The live audio webcast (which will be listen-only) will include the remarks of Brian Duperreault, president and chief executive officer of MMC. The webcast can be accessed at www.mmc.com. A replay will be available beginning approximately two hours after the event.

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.