William OBrien's Colleagues at Mercer UK
William OBrien's Contact Details
Mercer UK
William OBrien's Company Details
Mercer believes in building brighter futures by redefining the world of work, reshaping retirement and investment outcomes, and unlocking real health and well-being. Mercer's more than 25,000 employees are based in 44 countries and the firm operates in over 130 countries. Mercer is a business of Marsh & McLennan (NYSE: MMC), the world's leading professional services firm in the areas of risk, strategy and people, with 76,000 colleagues and annual revenue of $17 billion. Through its market-leading businesses including Marsh, Guy Carpenter and Oliver Wyman, Marsh & McLennan helps clients navigate an increasingly dynamic and complex environment. For more information, visit www.mercer.com. Follow Mercer on Twitter at @Mercer.