Oliver Wyman (Marsh McLennan)

Marsh McLennan is a leading professional services firm in the areas of risk, strategy and people. Its more than 85,000 colleagues advise clients in 130 countries. With annual revenue of over $20 billion, it helps corporate and public sector leaders navigate an increasingly dynamic environment through four market-leading businesses - Marsh, Guy Carpenter, Mercer and Oliver Wyman. Together, they address today's most complex challenges.