The Defense Department plans to overhaul a controversial $5.5 billion workers’ compensation insurance program for its civilian contractors working overseas after they discovered that it is paying up to 10 times more for the insurance than any other government agenciy and is leaving taxpayers exposed to a variety of large uncovered claims. Last April, the GAO discovered that Defense contractors were paying up to $21 in workers’ compensation premiums for each $100 in workers’ salary, compared to as little as $2 in insurance costs for contractors that are employed by the State Department.