Hi my DS is doing an apprenticeship to. He is monthly paid so for the first 2 months we did not ask for any housekeeping as it was his first pay packets. From then on it was 15% of pay but not including any overtime which he does on average once a month. It works out to £60 per month.
I do pay his travel pass £57 every 4 weeks and pay £15 per month on his contract phone (contract was already in place). He also has a packed lunch everyday and I bought his work clothes, like work safety boots, trousers (good ones on Amazon for around £13 a pair). I top up his work clothes and also buy toiletries (sp) within the weekly shop. Washing done (I don't really iron) and of course plenty of food in the house and a dinner every night.
I know dinner and washing is not exceptional but trying to emphasise that yes I do ask for housekeeping as it is the principal of earning money and contributing towards the household. It is the effort of DS actually remembering to go to the bank, withdraw money and handover on payday. He is quite proud to do it.
He does have £85ish a week to spend on whatever he likes but as apprentices they are working practically full time and a study day for nominal pay. It will pay off after the 4 years when he has qualified but it is a fine line to help them out as much as possible whilst still treating them as adults. I didn't want him to feel disheartened especially after the first few months when they are shattered, working hard, studying, having exams and then can't even afford to go out with friends at the weekend.
However I do think that both should be 'charged' the same rate. It will seem unfair to him as he is looking at it as they both are earning some money but he is the only one being charged anything. I think at his age I would think this grossly unfair to - it is not the amount but why am I paying and sister isn't.
Once again apologies as I always seem to do long posts