Marsh McLennan (NYSE: MMC) is a professional services firm. Its 78,000 colleagues advise clients in 130 countries. With annual revenue of $18 billion, Marsh McLennan has four market-leading businesses. Marsh provides data-driven risk advisory services and insurance solutions to commercial and consumer clients. Guy Carpenter develops advanced risk, reinsurance and capital strategies that help clients grow profitably and pursue emerging opportunities. Mercer delivers advice and technology-driven solutions that help organizations redefine the world of work, reshape retirement and investment outcomes, and unlock workforce health and well-being. Oliver Wyman is a strategic, economic and brand adviser to private sector and governmental clients.