Marsh & McLennan Companies, Inc., a professional services company, provides advice and solutions to clients in the areas of risk, strategy, and people worldwide.

Aon plc, a professional services firm, provides advice and solutions to clients focused on risk, retirement, and health worldwide. It offers commercial risk solutions, including retail brokerage, cyber, and global risk consulting solutions, as well as acts as a captives management; and health solutions, such as health and benefits brokerages, and health care exchanges.

Willis Towers Watson Public Limited Company operates as an advisory, broking, and solutions company worldwide. It operates through two segments, Health, Wealth and Career; and Risk and Broking.

Erie Indemnity Company operates as a managing attorney-in-fact for the subscribers at the Erie Insurance Exchange in the United States. The company provides sales, underwriting, policy issuance, and renewal services for the policyholders on behalf of the Erie Insurance Exchange.

Arthur J. Gallagher & Co., together with its subsidiaries, provides insurance brokerage, consulting, third-party claims settlement, and administration services in the United States, Australia, Bermuda, Canada, the Caribbean, New Zealand, India, and the United Kingdom.

CorVel Corporation provides workers' compensation, auto, liability, and health solutions for employers, third party administrators, insurance companies, and government agencies to assist them in managing the medical costs and monitoring the quality of care associated with healthcare claims.