I passed my pre employment urine drug screen because I had stopped my rare, occasional use to get and keep this job. A few weeks after working there, they urine and hair tested me just because I might have needed to be a backup delivery driver (non CDL). I passed the urine part of course, but failed the hair because it detects use for months prior, long before I ever worked there. So I never did drugs while being employed there and I had already passed a test to get hired so I never really violated their policy. I was still immediately terminated. Side note: it's been months and I still have not touched any drugs. Yet I'm still unemployed and cannot collect because of this.