Concerns have been raised about the lack of data to indicate the amount of money the U.S. Postal Service saved as a result of reduced post office hours and post office re-classifications...
The GAO went on to point out that these limitations include “imprecise and incomplete labor costs, including errors in underlying data; lack of sensitivity review; and the exclusion of other factors that affect net cost savings, particularly the potential impact of reduced retail hours on revenue.”
POST Plan savings "Unreliable" per GAO
open this power-point presentation from Bob Levi for further information
post plan ppt from bob levi.pdf