The US Postal Service continues to lose money, posting a net loss of $3.5 billion for the third quarter ended June 30. This is $1 billion more than the USPS lost during the same quarter last year, bringing the fiscal 2010 year-to-date net loss total to $5.4 billion. A significant portion of the USPS’ losses are due to an unprecedented decline in mail volume. Mail volume totaled 40.9 billion pieces in the third quarter, down 1.7% compared to a year ago. Overall, mail volume has declined by more than 20% since 2007, due in large part to the replacement of letter and business mail by electronic alternatives. The USPS’s continuing losses are one reason the organization insists it may not be able to meet to its financial obligations in 2011. “Given current trends, we will not be able to pay all 2011 obligations,” said Joseph Corbett, CFO at the USPS, in a statement. “Despite ongoing aggressive cost reductions totaling over $10 billion in the last three years, it is clear that a liquidity problem is looming and must be addressed through fundamental changes requiring legislation and changes to contracts” The USPS is addressing this potential revenue shortfall through a variety of means such as cutting costs by eliminating 63 million work hours in the first three quarters of fiscal 2010, consolidating mail processing and transportation networks and realigning carrier routes. The USPS is also seeking to eliminate Saturday mail delivery and requesting a rate increase, both of which have been met with resistance by some mailers (Click here to read more about the debate surrounding five-day delivery and here and here for more on the rate increase). Finally, the USPS is hoping for relief from its obligation to prefund a retiree health benefit fund with a $5.5 billion payment in September. The USPS’s complete third quarter results include operating revenue totaling $16 billion, which is approximately $294 million less than the same period last year. Operating expenses increased during the same period by 4.2% for a total of $19.5 billion.