I hired a guy way back who was in a pinch, so I loaned him $200, and said he could pay me back when he got his first paycheck. I think he just forgot, and I never mentioned it, he was a hard worker, so I probably made more than that and then some because of his work. He was an archeology major at Ohio U.
One thing I didn't like as much is he and another technician reporting to me used to stay out late drinking and came into work later and later, and I'd mention it. Then we got this crazy as heck boss from Italy, a lady, who would show up at 10 AM maybe, and leave at 3, unless it was snowy, then she'd not show up at all (which was a blessing). So, I let these two showing up 30 minutes late slide after that. I think she was the worst boss I ever had, and that's saying something.