Please no.
Back in the 90's I worked on a concrete crew for a summer. Building big box store type buildings. They pour the floor, then pour the walls on top of the floor, then tip the walls up and weld them together with metal flanges embedded in the concrete.
Nearly everyone on the crew did meth (except like 2 guys, I was one). Often work would start like 3:00 AM to prevent rapid drying. No lunch to speak of. Expected to literally run on the job site from one task to another. I suppose there may have been potential labor complaints but they never happened or weren't investigated.
It wasn't unusual for people to burn out and just not show up. That was part of the calculus I think by management. One guy fell asleep in his truck and could not be woken up (after presumably being up for a few days).
I quit after a few months but later saw my (low level) supervisor at a restaurant. He was alone and didn't look good. He told me how his life had gotten increasingly out of control and he had tried to kill himself (before finding Jesus per his words).
Company didn't care. They were making money. They turned a blind eye to what was going on. The human wreckage generated was awful however.
You think if meth is legal over the counter this won't be more prevalent? I'm pretty sure it will. Meth kills, and not just the body.