When I was young (pre-16), I looked for part time jobs and was usually paid in cash. No big deal back then. Mowing lawns for neighbors, trimming trees and bushes, loaded/unloaded trucks for a guy who had a salvage business.
Now its considered child abuse to let kids have jobs.
I would bet, seeing as this is Kentucky, there is a good chance the owner/manager was just providing these kids with welcome opportunity, and was paying them cash under the table as they could not be legally employed. I dont think even 10 year olds were voluntarily working for no pay.
Same. Not sure if I may have stopped when I went to college. I later tarred driveways. I also caddied for a while in high school and college. We were paid in cash, and no one declared their income.