Anonymous wrote:Oof, I'd leave it alone. He's a grown adult. It's really tricky to teach an adult basic manners. If I were his family member I'd gently teach him, but not as his employer.
Some people are simply oblivious, while some resist being taught. My own mother absolutely refused to learn the correct way to use utensils and carried on talking with a mouth full, despite repeat reminders. I was not taught any table manners, but had to pick up cues as an adult by observing others. If he's receptive, he'd pick up the clues from your interaction with your kids. Otherwise he'd just not mind it.
+1. Just keep correcting your children and hopefully he catches on. If not, let it go.