Washington, D.C. ? Battered by the economy, the post office is offering early retirement to 150,000 workers, cutting management and closing offices, the agency said Friday.

The Postal Service lost $2.8 billion last year and is facing even larger losses this year, despite a rate increase — to 44 cents for first-class mail — scheduled to take effect May 11.

The agency said it will reduce management staff nationwide by 15 percent, with more than 1,400 processing, supervisor and management posts at 400 facilities being eliminated.

And another 150,000 postal workers will be offered early retirement.

The agency also made early retirement offers last year, but unions discouraged their members from accepting the offers and they were not widely used.