Postal employees are federal employees they are covered under CSRS and FERS depending on when hired, have similar FEGLI benefits...difference is the postal service pays 100% for the basic benefit which is essentially 1 years pay plus 2K and if under age 45 there is a multiplier added on from 1-2x.
Peter, I'm really not disagreeing with you, because you are much more knowledagable than I. However, as a former federal auditor I do know that USPS dropped off the government entity roles in 1971 and at that point, we no longer provided their financial audits. The USPS is actually a semi-private corporation supported entirely by the sale of stamps etc., so I assumed they were not federal employees. No tax money has gone to the USPS since 1971. I knew the postal employees participate in the retirement system, my only point was I didn't know how much. My health insurance always cost more for my share than postal workers had to pay so I assumed they had a better deal.