You will get up early in the morning to be there on time, start times for package handlers are around 3:30 am, 2 am in the peak season. You'll be assigned 3 to 4 trucks to load, which is about 300 to 400 packages. Packages will flow down the belt and you will take the ones with your truck number, scan them, and load them onto the truck.
It's simple work, some boxes are quite heavy, 150 lbs or more, but you can get help with those. The pay is good, you can get extra hours if you want, and if you work long enough at the company (2 years +) you can get promoted even without a degree.
Starting pay is 12.95 an hour for Greensboro NC. For comparison the minimum wage here is 7.25 an hour. If you live somewhere where the minimum wage is higher, odds are FedEx pays more.