Guy Carpenter & Company, Inc

Marsh & McLennan Co Inc
13 June 2006


News Release

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


        MMC NAMES DAVID SPILLER CHIEF EXECUTIVE OFFICER OF GUY CARPENTER

                      Sal Zaffino to Continue as Chairman

NEW YORK, NEW YORK, June 13, 2006 - Marsh & McLennan Companies, Inc. (MMC) today
announced that David Spiller, President of Guy Carpenter & Company, Inc., MMC's
global risk and reinsurance specialty business, has been appointed to the
position of Chief Executive Officer of Guy Carpenter, effective July 1.

Mr. Spiller, 50, has served as President of Guy Carpenter and a member of the
firm's Executive Committee and Management Board since January 2006. As CEO, he
will be responsible for the day-to-day operations of Guy Carpenter worldwide and
will report directly to Michael G. Cherkasky, President and Chief Executive
Officer of MMC.

Salvatore D. Zaffino, the current Chief Executive Officer of Guy Carpenter, will
continue as Chairman. Mr. Zaffino, 60, will continue to advise Mr. Spiller and
the firm's leadership team on strategic business issues, and will work closely
with senior management on select account activities. Mr. Zaffino will also
continue to serve as Chairman of Reinsurance Solutions International, LLC, a
wholly-owned subsidiary of Guy Carpenter.

Mr. Cherkasky said: 'Since joining Guy Carpenter in January, David Spiller has
proven himself to be both a visionary leader and a quick study. Under his
leadership, the firm plans to grow by leveraging Guy Carpenter's best-in-class
risk advisory services, program analytics, placement capabilities and
specialized market and qualitative expertise.

'Guy Carpenter's leadership position in the marketplace and strong performance
will play an important role for MMC as we draw on the unique combination of
services and expertise across the company to deliver solutions that address the
myriad risks our clients face. We fully expect David to build on Guy Carpenter's
strong platform as he leads the firm into the future.'

Before joining Guy Carpenter in January 2006, Mr. Spiller was Chief Executive
Officer of Benfield Ltd. in London where he was responsible for all business
outside of the United States. Mr. Spiller joined Benfield through its merger
with Greig Fester Group, which he joined in 1979. He also chaired the London
Market Brokers' Committee from 2004 to 2006.

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 

This press release contains 'forward-looking statements,' as defined in the
Private Securities Litigation Reform Act of 1995. These statements, which use
words like 'anticipate,' 'believe,' 'estimate,' 'expect,' 'intend,' 'plan,'
'project,' 'should' and similar terms, express management's current views
concerning future events or results. For example, we may use forward-looking
statements when addressing topics such as: future actions by our management or
regulators; the outcome of contingencies; changes in our business strategy;
changes in our business practices and methods of generating revenue; the
development and performance of our services and products; market and industry
conditions, including competitive and pricing trends; changes in the composition
or level of MMC's revenues; our cost structure; the impact of acquisitions and
dispositions; and MMC's cash flow and liquidity.

Forward-looking statements are subject to inherent risks and uncertainties.
Factors that could cause actual results to differ materially from those
expressed or implied in our forward-looking statements include:

   • the economic and reputational impact of: litigation and regulatory
     proceedings brought by federal and state regulators and law enforcement
     authorities concerning our insurance and reinsurance brokerage and
     investment management operations (including the complaints relating to
     market service agreements and other matters filed by, respectively, the New
     York Attorney General's office in October 2004, the Connecticut Attorney
     General's office in January 2005 and the Florida Attorney General's office
     and Department of Financial Services in March 2006, and proceedings 
     relating to market-timing matters at Putnam); and class actions, derivative 
     actions and individual suits filed by policyholders and shareholders in 
     connection with the foregoing;
   • the extent to which we are able to replace the revenues we previously
     derived from contingent commissions, which we eliminated in late 2004;
   • our ability to retain existing clients and attract new business,
     particularly in our risk and insurance services segment, and our ability to
     continue employment of key revenue producers and managers;
   • period-to-period revenue fluctuations relating to the net effect of new
     and lost business production and the timing of policy inception dates;
   • the impact on our commission revenues of changes in the availability of,
     and the premiums insurance carriers charge for, insurance products,
     including the degree and timing of the impact of 2005 hurricanes on
     reinsurance premium rates;
   • the actual and relative investment performance of Putnam's mutual funds
     and institutional and other advisory accounts, and the extent to which
     Putnam reverses its recent net redemption experience, increases assets 
     under management and maintains management and administrative fees at 
     historical levels;
   • our ability to implement our restructuring initiatives and otherwise
     reduce expenses;
   • the impact of competition, including with respect to pricing and the
     emergence of new competitors;
   • the impact of increasing focus by regulators, clients and others on
     potential conflicts of interest, particularly in connection with the
     provision of consulting and investment advisory services;
   • changes in the value of MMC's investments in individual companies and
     investment funds;
   • our ability to make strategic acquisitions and to integrate, and realize
     expected synergies, savings or strategic benefits from, acquired 
     businesses;
   • our exposure to potential liabilities arising from errors and omissions
     claims against us;
   • our ability to meet our financing needs by generating cash from
     operations and accessing external financing sources, including the 
     potential impact of rating agency actions on our cost of financing or 
     ability to borrow;
   • the impact on our operating results of foreign exchange fluctuations;
     and
   • changes in the tax or accounting treatment of our operations, and the
     impact of other legislation and regulation in the jurisdictions in which we
     operate.

MMC cautions readers not to place undue reliance on its forward-looking
statements, which speak only as of the dates on which they are made. MMC
undertakes no obligation to update or revise any forward-looking statement to
reflect events or circumstances arising after the date on which it is made.
Further information concerning MMC and its businesses, including information
about factors that could materially affect our results of operations and
financial condition, is contained in MMC's filings with the Securities and
Exchange Commission.




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