I worked the morning sort at Fed-Ex Express, part time, for a year and a half while in between full time employment. One of the few places, along with UPS, that you can get benefits for part time work.
Once the sort starts, there is some major ass-busting that goes on. Boxes are flying everywhere especially at Christmas, Valentines Day, Mothers Day and such. Same for UPS.
Everything is about speed. Delivering is just as tough.
This guy was terrible but he is not the norm.
Yes, get the insurance.
Fed-Ex Ground is, I believe, a contracted out division of Fed-Ex.