Harry Truman actually said...
It is my desire, therefore, that, with the exception of the War Department, the Navy Department, the Treasury Department, the Veterans Administration, the Tennessee Valley Authority, and the Panama Canal, the head of each department and agency establish, effective July 1, a 44-hour workweek.
Context
Memorandum Reducing the Workweek of Federal Employees to 44 Hours.
07/02/1945