I have a 13 year old girl who spends 8-12 with us on her PD days and 2X per month in the summer and I pay her $20 each time. She thinks it's lots of money and she is a great helper when we want to go to the splashpad or do lots of baking and crafting, etc. and it's wonderful to have the extra hands once in a while. I don't think young teenagers expect to be paid minimum wage because they consider it lots of fun. But of course, my little helper is very mature for her age and a family friend.