Re: From outside the US
It seems bizarre that if weed is legal in a state that someone can still be fired for using it.
Alcohol is legal also but there is a line one shouldn't cross. Ok.. manglement excluded but some workplaces (machiniery, chemical) have zero tolerance if a pee test during working hour shows drugs/alcohol in your blood. Those usually are for jobs where alertness, etc. are required like pilots, machinists, and others.