All of them are modern plantation slave houses. USPS and UPS all have mandatory overtime for their drivers and you’ll be pushing 60+ hours a week, 6 days a week. The post office even worse because you have no guaranteed days off and can literally work months at a time without a day off.

The post office don’t even drug test no more because only someone on meth could do that job.

UPS was about to strike about being literally worked to death and they really didn’t even fix that problem, they just threw more money at it.
FedEx Express is better to work at than FedEx Ground because Express has benefits and you are actually a full fledged FedEx employee and get paid slightly better unlike Ground which is contracted out slavery just like Amazon DSP delivery. FedEx Express don’t have mandatory overtime outside of peak but they have voluntary overtime, but the wages are so low that you feel like you need to work 60+ hours a week in voluntary overtime to survive and your supervisors might try to get your ass up out of there if you ain’t willing to work slave overtime hours.