Arthur J. Gallagher & Co. is one of the world's largest insurance brokers and risk managers, operating a global network of brokerage offices that place commercial and personal insurance policies across all major property/casualty and health/welfare lines for corporations, nonprofits, and individuals, while also managing reinsurance placements through specialized teams. The company generates revenue primarily through commissions and fees on insurance placements, supplemented by performance-based fees from its risk management segment, which administers workers' compensation, liability, and property claims on behalf of insurance carriers and large corporate clients. With operations spanning the United States, Australia, Canada, New Zealand, the United Kingdom, and dozens of other countries, Gallagher operates through specialized practice groups focused on niche sectors such as energy, healthcare, financial services, and technology, leveraging proprietary analytics platforms and integrated service capabilities to differentiate itself in a competitive marketplace.