We have an 18 year old apprentice who works here when not at sixth form. He just turned up at 2pm and walked into my office,
Me - "Hi, nice to see you, how are you?"
Him -"I'm really really tired..."
Me - "Oh? Late night?"
Him - "No, it's just that this is the time I normally get out of bed..."
We had someone like that once. I gave him a book to read and he fell asleep reading it. He was always late, one time turning up at 3.30 and I gave him a lift to the station an hour later after I'd woken him up.