But the president of the National Association of Letter Carriers, Fredric Rolando, said the end of Saturday mail delivery is "a disastrous idea that would have a profoundly negative effect on the Postal Service and on millions of customers," particularly businesses, rural communities, the elderly, the disabled and others who depend on Saturday delivery for commerce and communication.
He said the maneuver by Donahoe to make the change "flouts the will of Congress, as expressed annually over the past 30 years in legislation that mandates six-day delivery."
There was no immediate comment from lawmakers.
But others agreed the Postal Service had little choice but to try.
"If the Congress of the United States refuses to take action to save the U.S. Postal Service, then the Postal Service will have to take action on its own," said corporate communications expert James S. O'Rourke, professor of management at the University of Notre Dame.