Assurance is among the largest and most awarded independent insurance brokerages in the U.S.A “Top 50” broker and repeated national “Best and Brightest Companies to Work For” winner, Assurance creates value by minimizing risk and maximizing health for 6,000 businesses and individuals across the country. The company is headquartered in Schaumburg, IL with centralized office locations in Chicago, IL and St. Louis, MO.