IMHO, that is a very dangerous avenue to go down. There is nothing wrong with teaching kids to earn their own money and have responsibility but before they start it is important for parents and kids to sit down and set up some basic financial planning and ground rules.
For instance, if a teen is earning their own money, and this usually starts with babysitting, should they pay for their own clothes, or should that money be put away for something really important? Don’t jump to answer, really think about it. If you choose the option of your kids paying for their own clothes, you have to set the guidelines first. In other words, just because they are paying for it that doesn’t mean they can go out and buy whatever they want because it is their money. In that case It is YOUR house, and if they are earning money, maybe they should be charged some rent or some cleaning fee. There is a way of discussing this before you go down that path. Have the discussion before you get there. You would not want to be in a position where you have a yelling match an you throw it out at a child “pay me for room and board!” or something as heartless because they bought jeans when it is against house rules. So make sure you define the house rules and the consequences before you get into trouble.
It is a good idea to introduce them to a savings account, maybe even bonds or something that will grow but is not easily liquidated. So you might choose to open a custodial account for them and they can deposit money in there. They also can’t take money out until they reach a certain age. So that money is safe. You can work out a budget with them. Obviously they should give masser money and then a percentage should go into savings and then discuss what they can spend the balance on and how. Don’t be caught off guard.