AON is an international company which specializes in three spheres: insurance and reinsurance brokerage, risk management services and human resource consulting. AON builds its products and services around the unique needs of its customers in different countries, involving professionals with deep knowledge in local markets and industries. In 2009 A.M. Best ranked the company as the #1 global insurance brokerage. AOL offers integrated capital solutions, encouraging competition among highly rated reinsurers and looking for new capital providers constantly. Providing a complete array of consulting and outsourcing services AON is also mentioned among the world’s top global human capital consulting companies. The company is headquartered in Chicago, IL and has over 500 offices in more than 120 countries. Please try to contact AON Service Customer Service directly prior to posting any complaints on this site.