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.

U.S.A. Provident Life and Accident Insurance Company of America is one of the leading multi-line insurers in the United States.

On October 1, 2002, Provident became a subsidiary of Nationwide Financial Services, Inc., and was renamed Nationwide Life Insurance Company of America, with the trade name "Nationwide-Provident." At the same time, it was de-mutualized, with policy holders receiving stock or cash payments.

1993: Unum merges with Colonial Life. 1997: Provident completes acquisition of Paul Revere. 1999: Unum and Provident merge to form UnumProvident Corporation.