Mercer is a global consulting leader helping clients around the world advance the health, wealth and careers of their most vital asset - their people.

Mercer is an American human resources consulting firm. It is also the world's largest institutional investment advisors.

Mercer has also been ranked as the largest outsourced chief investment officer (OCIO) provider.

Headquartered in New York City, Mercer has more than 23,000 employees, is based in more than 43 countries, and operates internationally in more than 130 countries.

Mercer is a subsidiary of global professional services firm Marsh & McLennan, and Mercer's $4.3 billion in 2016 revenue represented 33% of the parent company's consolidated revenue.