Chattanooga-based Unum Corp. is the world's largest disability insurer. The insurer reports the top reasons for long-term disability for employees covered by Unum plans last year were:
Cancer: 14 percent of all long-term disability claims
Back injuries: 12 percent of all long-term disability claims
Other injuries (not back related): 9 percent of all long-term disability claims
Depression: 9 percent of all long-term disability claims
Nervous system: 8.5 percent of all long-term disability claims
Source: Unum Corp.