I've heard that just about every warehouse job is very physically and mentally demanding but not as bad as the big corporation ones like FedEx, UPS, and Amazon since they supposedly expect humanly impossible performance metrics from their warehouse employees.
I have heard something similar regarding Amazon.
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I've heard that the pay is decent but the work load is very brutal.
I guess it depedns were most of the horror stories I've heard are some Americans so I don't know, but yah the workload is totally going to be brutal