About Marsh McLennan Agency MidwestMarsh McLennan Agency’s Midwest Region is a full-service brokerage providing business insurance, employee benefits, private client insurance, and retirement services to businesses and individuals across the country. MMA Midwest  is consistently recognized as a top workplace, attracting and retaining its insurance talent by rewarding expertise and investing in career development. Colleagues enjoy an award-winning culture that fosters a highly productive and results-driven working environment. The Client Service Representative (CSR) is the oil that makes our exceptional client service machine run smoothly.  They perform transactions and tasks essential to managing efficient insurance, benefi