Unum Group
An American insurance company headquartered in Chattanooga, Tennessee, that provides disability, life, accident, and critical illness coverage, mostly to people through their employers. Its roots go back to 1848, when it was chartered in Maine as Union Mutual; it merged with the Provident Companies in 1999 to become one of the largest disability insurers. The name "Unum" comes from the Latin word for "one."