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 four distinct businesses – Unum US, Unum UK, Unum Poland and Colonial Life. Its underwriting insurers include The Paul Revere Life Insurance Company and Provident Life and Accident Insurance Company. Unum is the top disability insurer in both the United States and United Kingdom and also offers other insurance products including accident, critical illness and life insurance. As of December 2016, Unum had 9,400 full-time employees and annual revenues of $11.047 billion. Richard McKenney has led Unum as its CEO since April 1, 2015.