Ventajas
The benefits, if you can make it through the probationary period and become a teamster you will reap the benefits the Union provides (401k and Medical)
Desventajas
You are treated like a machine, management doesn't care about your safety or well being. It definitely is a numbers game and all they want is for you to load their trucks (if you're a package handler) all night long. Drop below what they expect of you for packages per hour and your manager will be paying you a visit. They also don't follow their own safety rules, for example: You are never to lift any package over 80 lbs by yourself, but on the job if you ask for help and no one comes over to help then managers force you to do it alone, they dont care if you get injured. their equipment is also unsafe, you are supposed to report damaged equipment to management and they are required to replace or repair it but this never happens. And If you are unlucky enough to get hurt on the job be ready to have management looking at you like a hawk as if you did it on purpose! Also you have to make sure you get paid for your hours, if you dont keep track of hours worked then UPS will pay you for less time and essentially get some work from you for free.