Company Overview
The Businesses of Marsh & McLennan Companies

Marsh & McLennan Companies is the premier global professional services firm providing advice and solutions in risk, strategy and human capital. Through our market leading brands, colleagues in more than 100 countries help clients identify, plan for and respond to critical business issues and risks.

Risk and Insurance Services

Marsh is the world leader in delivering risk and insurance services and solutions to clients. It provides global risk management, risk consulting, insurance broking, alternative risk financing, and insurance program management services for businesses, public entities, associations, professional services organizations, and private clients. Marsh is organized by client, industry, and risk categories to facilitate the global delivery of highly specialized products and services covering a wide spectrum of risks.

Guy Carpenter is the world's leading risk and reinsurance specialist, creating and executing reinsurance and risk management solutions for clients worldwide. It provides risk assessment analytics, actuarial services, highly specialized product knowledge, and trading relationships with reinsurance markets throughout the world. Client services also include contract and claims management and fiduciary accounting. Run-off services and other reinsurance and insurance administration solutions are offered through Guy Carpenter subsidiaries on a fee basis.


Mercer is a global consulting leader in talent, health, retirement and investments that helps clients around the world advance the health, wealth and performance of their most vital asset - their people. The firm also provides customized administration, technology and total benefit outsourcing solutions. Mercer's investment services include global leadership in investment consulting and multi-manager investment management. Mercer's 20,000 employees are based in more than 40 countries. The firm's global network ensures integrated, worldwide solutions for clients who wish to establish global policies and procedures while allowing for the flexibility to accommodate local cultural, legal and regulatory requirements.

The Oliver Wyman Group delivers advisory services to clients through three operating units, each of which is a leader in its field. Oliver Wyman is a top-tier global management consulting firm that combines deep industry knowledge with specialized expertise in strategy, operations, risk management, organizational transformation, and leadership development. helps clients create, develop, and manage their corporate branding, identity, and image. NERA Economic Consulting advises corporations, law firms, and government entities on the economics of competition, regulation, public policy, finance, and litigation.

Company Summary
Marsh & McLennan Companies
Number of Employees
500 or more
(212) 345-5000
1166 Avenue Of The Americas
New York, NY