Marsh McLennan is a global professional services firm helping clients navigate risk and complexity through integrated services across risk, reinsurance, capital, people, investments, and management consulting. The company operates in 130 countries with more than 90,000 employees and annual revenue exceeding $24 billion, tracing its roots back over 150 years.
Its four main businesses each lead their respective fields: Marsh in risk and insurance services, Guy Carpenter in reinsurance and capital, Mercer in people and investments, and Oliver Wyman in management consulting. Together, they serve clients across industries including risk management, insurance, reinsurance, human capital, and investments.
The firm frames its purpose as building client confidence through perspective, partnership, and seeing around corners. Technology underpins these services at scale, with engineering, data science, and digital product teams supporting a diverse global client base.
