A part time job at UPS is in a whole different category than the average Walmart Greeter...it was designed that way for a reason. Get cheap manual labor without no real reason for them to stay, pension is a joke. Nobody is going to hang around for that, besides that when you decide (generally 5 to 10 years) to become Full Time under the IBT/UPS Pension Plan those years as a part timer pays peanuts. Both are subject to a 6 percent penalty if you do not hit those service requirements of 25, 30 and 35.