I HATE this part

I just had to fire a guy at work for M.C.E. I like this guy and it didn't have to happen. He hurt his knee at work and went in to the companies Dr. the first thing they do is ask for a piss test, he refuses. Bad enough right, then I talk to him and got him to go back this morning after explaining what had to happen if he didn't. Again he said he couldn't pe with some one right there. So what to do? I am forced to follow company policy. See Ya. This is a hard lesson and it didn't have to go this way. I HATE having to do this and be the companies tool to enforce this.