Why aren't they still at USPS? Are they retired, old and broken down, or are they rejects who couldn't make it there? Why are they working at UPS if postal employees have such a cushy job?
I can assure you that many of the postal employees I knew worked just as hard as anybody in private industry. I respect any person who tries to do a good job, whether they work at UPS, USPS, or any other entity.
UPS is USPS on steroids, twice the pace. Production for profit is king.
Come on in and look for a part time job for peak season. Get in shape with out going to a gym. LOL!