Two former Amazon employees pleaded guilty to conspiracy to commit wire fraud against the company.
OSHA has now cited six warehouses in five states in the last few months.
The leaked pamphlet asks workers to "monitor your urine color" and alter their lifestyle so they don't get injured on the job.
In Jeff Bezos' last letter to shareholders as Amazon CEO, he laid out a plan to increase safety by algorithmically managing workers' bodies.
In a video, Biden denounces "threats" and "anti-union propaganda" while supporting workers unionizing in Alabama.
Twenty-four people were hospitalized after a canister of the stuff was punctured by an automated machine.
Around 80 Amazon warehouse workers were evacuated after bear repellent went off at a New Jersey site.