I've worked a few places and my opinion is that UPS is stingy and unionized, but this ain't the worst of it. The worst part is they compensate for their incompetence by rushing their work orders. Employees are watched and forced to do more than they can safely do. This results in a lot of damaged goods upon deliver to the recipient. I've seen this in a lot of work places so it's an educated opinion.
Bottom line, a lot of places that shouldn't be in business ARE in business and stick around for a while. Eventually, the bad practices catch up with them, but for a long while, they wreak havoc.
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