2026 Marsh McLennan Summer Internship Program

Marsh McLennan's 2026 Summer Internship is a 10-week paid program placing rising seniors across the firm's four businesses: Marsh (risk and insurance brokerage), Guy Carpenter (reinsurance), Mercer (already scraped - skip), and Oliver Wyman (consulting). Interns at Marsh work alongside brokers and risk consultants on client engagements including insurance placement, risk analytics, and client advisory. Guy Carpenter interns support reinsurance broking and cat modeling. The program includes cross-company networking, executive speaker series, a mentor, and a capstone. Candidates should be rising seniors with a minimum 3.3 GPA. Marsh McLennan sponsors H-1B visas for qualifying candidates.