In the UK we are randomly drug tested regularly. " PROB two or three times a year. If we fail we are sacked. NO EXCEPTIONS.
and on a personal level I wouldn't work with anyone that's out of it.
Id point blank refuse.
My advice is go to your boss and tell him you aren't prepared to work with these guys. ( I know it's hard to be a grass. BUT PEOPLES LIVES ARE AT RISK....).
Dont get me wrong I am no angel...I've " let's say been lucky in the past"
Be a man and say it to the " stoners face". Either get clean or get another job...... This trade is dangerous enough.
Ive vey had to work with alcoholics in the past ...and had to work around their " good and bad days". But I won't do it anymore.
Ive survived over 30 years in the trade. And intend to come out the other side.
Sorry to hear of your problems. I hope it works out for you.
GOOD LUCK MATE..