Unum Group is a Chattanooga, Tennessee-based Fortune 500 insurance company formerly known as UnumProvident. Unum Group was created by the 1999 merger of Unum Corporation and The Provident Companies and comprises three distinct businesses ? Unum US, Unum UK, and Colonial Life. Unum US includes Unum Life Insurance Company of America which provides a portfolio of employee benefits including disability, life, accident and critical illness coverage, which help protect the financial wellbeing of employees and their families. Unum UK is a provider of group income protection, group life insurance and critical illness cover, and operates in both the UK and Poland. Colonial Life operates in the voluntary benefits market, providing financial protection options for employees and their families. Unum Group is the largest provider of disability insurance in the United States and the United Kingdom, and also offers other insurance products including accident, critical illness and life insurance.