As soon as they are working no matter what age they pay 15 percent of their wage to us its simple and fair to everyone.

Because one child found it hard to get a job we did a crafty one and paid a friend who had a cafe 20 pound a week to employ him ! To this day he does not know we was paying his wage and then taking 15 percent out of it lmao.

Had a friend many years ago who allowed her son to not pay a penny while in education however as soon as he got a job after leaving uni he had to pay a third of all bills coming into the house as he was the third adult, I thought this harsh but he is now a bank manager with two children one of whom does the same.

Its a put up and shut up rule, ie they put up with it or move out.