Pentagon allows employees who took off too much unpaid time to substitute paid leave.
Pentagon imposes tight limits on performance payments and other incentives for its civilian workers.
Employee groups are calling on Congress to stop furloughs of DoD employees now rather than waiting until fall.
The House late on Tuesday voted to stop furloughs of defense civilian employees but the language wouldn't take effect until October.
The Defense Department on Wednesday told its nearly 800,000 civilian federal employees that should sequestration occur it “will be forced to place the vast majority” of them on unpaid furloughs.
Washington-area members of the House will ask their colleagues to reject a Senate plan that could result in about a 5 percent loss of Defense Department civilian positions, along with a similar cut in contractor jobs.