Pros
Very good company to work for. Great benefits for even part time package handlers. You can move up pretty quickly in the company if you want to but must be willing to move anywhere in the country.
Cons
You basically have to start as a package handler to get anywhere in the company. Then you can move into an admin position or a part time management position. Then after being a part time manager for a couple years you might get lucky and get a full time management position. It is hard to live on part time pay so you will have to supplement your pay with another part time job while waiting for a full time position. Hours are a bit strange for part timers and some full timers, midnight to 7 am for the preload and 5pm to 10pm for the outbound (depending on the station)