One thing I never understood, was one place I worked at that had a prohibition against pot use. I think it had to do with working with "Challenged Persons" and that the company got federal funding,... a bit of the two.... Anyway, the turnover there was pretty high. So we were always in a state of hiring people. What I never understood was, it was clear, the company didn't want to hire anyone that smoked pot. It was clear there was going to be a drug test after the passed interview. The lit told them that, and we, the interviewers told them that. There WAS going to be a drug test. And after a while, I would side chat with the applicant, privately, ask the applicant to please not waste our time, if you can't pass. Apply again, later if you really want the job. And they would all go, "Its okay, I'M CLEAN." And then 70% of them would fail the test. And these were people I wanted to hire.
This was a huge drain on everyone. To always be in a state of compensating for that lost person.
And even after the 90 day, and under full hire, if there was an event, "accident," one would get drug tested. And 20% failed then.
So, I don't get it.