Amazon warehouse workers 'peed in bottles' fearing punishment for taking breaks
The main issue is with demand-supply difference. There are too many people out there in need of blue collar jobs, and this means companies like Amazon have a chance to push the criteria to get the job much higher, as long as it's legal.
This happens in other sectors too. Here in India, there's oversupply of candidates in almost every field, with the exception of those which require highly specialised/costly knowledge(eg: PhD in AI, neurologist), so a lot of companies exploit people by making them work for long hours and at a very low salary.