My 14 year old pays for nothing. And he won't untill he is an adult. I personally do not support a child working while in school or during the summer untill he/she has graduated or unless there is dire family need.
My parents didn't allow me to work, my job was to go to school and do all the extras that I would never have the chance to do again. I was supplied a car and they paid the insurence and gas. I was at the school before it opened and many hours after class hours ended doing a ton of activites. My car was not fancy, my clothes were not fancy, but I was happy and learned many things that have helped me as an adult.
You work your entire life. Some people work untill the day they die. I didn't need to work to learn how to budget or how to be respectful. And you know what ? Those minimum wage jobs (yes, unskilled teenagers get low pay)often have you working in an enviroment that can physically scar you for life. Those hot grills and french fry machines can scar you just like dropping a hot bowl of soup on your way to the table. Not worth the money, IMHO. Or the having to deal with people who don't give you respect based on your age while you are working. i know that I don't want to ask a teenager about a clarification about a policy, but darn! I have seen some people be very rude!
Its also not worth the time they spend making adult decisions because they are expected to pay their way like an adult. Drugs, sex, drinking all come with Timmy having money to fork over for the above and telling his parents he is "working". I'm 33 and can tell you my graduating class has plenty of this going on. And, I was a cheerleader and in drama so its not like I wasn't popular myself....so don't think I sat arounf in the corner condemming people soul to hell or by myself in the corner of the library.
So my 14 year old can be a kid. A kid who is given a budget, has to do chores around the house as a family member, and is given the right amount of space and freedom to make good choices.