My friend was delivering in South Philly. It's not an easy job, since most of our blocks have 25 houses on one side of the street. (Rowhomes.) And since they keep the mail in the truck until they can get to it, that means delivering to 50 homes before getting back to the truck.
He was rewarded for his good work by being sent to 30th St. Station. (The big post office in Philly.) And then he was "rewarded" again, by being in charge of 19103 -- our downtown/skyscraper section of the city.
After all that "rewarding," his wife had a complication with her pregnancy. Her thyroid produced a goiter big enough to stop her from breathing. (It's rare, but it was related to being pregnant.) He had to take two days off to be with her for the surgery, and then two days off when she delivered a couple of months later. He was scolded and threatened with loss of job, if he used one more sick day ever.
And that's why they moved to Buffalo, so he could be a supervisor up there instead. lol
I have a FB/writer friend who works for the post office in Ohio. Some of her other friends work with her. I maintain that the medical field is one place I would never work for. I keep forgetting about the post office. Not sure which one I'd hate more.