at McDonalds
well it depends on what job you mean. for most jobs it's around eighteen.
People can start working at 14 years old in the USA. This depends on which job you wish to do and what experience you have e.g: Goldman Sachs will not hire a 14 year old, MacDonalds might.
I am 14 year old girl and would like to work part-time. Can i work at this age.
Well you can be any age really just as long as your parents ar okay with it and your boss accepts you.