actually, depending on the time period/economic boom or bust, teenagers are or aren’t supposed to have any jobs. In WWI and WWII yes, in between like the Great Depression no. They were taking jobs from all the returning vets. It’s not as cut and dry. A teenagers real responsibility is school work and then taking care of household chores.
We also can thank many of the International Corporations who are sending jobs overseas and hiring people for pennies to keep up with the demand of cheap products.
“You reap what you sow.”