Coffman, a Republican, said Thursday his proposal would save about $5.5 billion.
He has introduced a bill calling for the cuts. It would require civilian federal employees to take two non-consecutive weeks off without pay in 2012.
Coffman says furloughs have become commonplace in state governments and that federal government should follow suit.
His bill would also reduce the budgets for congressional offices, but he didn't say how much.
(Copyright 2011 by The Associated Press. All Rights Reserved.)