Personnel costs, including compensation and benefits for more than half a million employees, worker's compensation and the prefunding obligation, accounted for about 77 percent of USPS operating expenses in 2011.
For most private employers, worker costs represent a much lower percentage of total costs.
The agency has eliminated more than 100,000 jobs since 2008, but officials say that number needs to drop more.
The Postal Service expects about 100,000 employees to retire by 2015, and officials want to eliminate up to 120,000 jobs through layoffs.
When you only have 23% of your money to operate with out the gate how can you stay afloat?