What do you think about me terminating someone's work contract because they're addicted to hard drugs?
How do you know they're addicted to drugs? Have they been coming to work high?
Yes, I'm sure he's come into work after using drugs, and I can't let it slide any longer.
I'm sorry you're dealing with this, but you're only trying to do what's best for everyone. Hard drugs and being under the influence is never okay at work because it can put themselves and others at risk. You are right to get him fired, because he could be a danger to himself and to others.
I'm still hesitant because I don't want anyone to lose their job.
I understand that you don't want him to lose his job, but it's never acceptable to come into work high. This might be the wakeup call he needs to turn his life around and stop abusing hard drugs.