Exhibit 99.1

          Willis Group Holdings Extends Chairman's Contract


    NEW YORK--(BUSINESS WIRE)--March 12, 2007--Willis Group Holdings
Limited (NYSE: WSH), the global insurance broker, announced today that
it has amended the employment agreement with its Chairman and Chief
Executive Officer, Joseph J. Plumeri, to extend its term for an
additional year. The employment agreement, which was scheduled to
expire October 15, 2008, will now expire October 15, 2009.

    In announcing the extension of Mr. Plumeri's employment agreement,
the Board of Directors issued the following statement, "For more than
six years, Joe Plumeri and his team have instilled passion, discipline
and a common sense of purpose throughout Willis. This has clearly been
reflected in the outstanding earnings and share price performance of
the Group over the same timeframe. We are pleased that Joe has agreed
to extend his contract and we look forward to his continuing
leadership."

    "I am proud to be associated with Willis, and I am as passionate
today about the company as I was on the day I started. My commitment
to the company, my colleagues, our clients and our shareholders is
unwavering," said Plumeri. "There is still a lot of work to be done in
order to achieve our goals and I am excited about leading our team
into the future."

    Willis Group Holdings Limited is a leading global insurance
broker, developing and delivering professional insurance, reinsurance,
risk management, financial and human resource consulting and actuarial
services to corporations, public entities and institutions around the
world. Including our Associates, we have over 300 offices in some 100
countries, with a global team of approximately 16,000 employees
serving clients in some 190 countries. Additional information on
Willis may be found on its Web site www.willis.com.

    CONTACT: Willis Group Holdings Limited
             Investors:
             Kerry K. Calaiaro, +1 212-837-0880
             kerry.calaiaro@willis.com
             or
             Media:
             Dan Prince, +1 212-837-0806
             dan.prince@willis.com