Can he sue? Get a settlement? Anything?

ok, short and sweet. My boyfriend is a cement mason/comcrete finisher. Just started a new job with a crew working a lot of hours on freeways. I'm talkin 7 days a week 12 to 20 hours a day. The issue isnt even the insane amount of hours. when his foreman sees the crew start to slow down he tells them to take a bump and get up to speed. By bump I am talking about a fairly new designer drug called bath salts. Aka tranquility, energy1, plant food, and a lot of otherstreet names. This is basically the same thing as taking meth and mdma at the same time....i understand that these guys make their own decisions, however there has to be a laws about this boss who is feeding these guys who work with heavy machinery while tweaked. my boyfrirnd is now in thr dualism