At 13 years old you can't work at a factory but you can stock shelfs or pick fruit. No more than 7 hours a day and no more than 35 hours a week. No Sundays.
The Netherlands, not the US.
They mention it in the article, the case that sticks in my mind is the one with Packer Sanitation, where they had at least 100+ teenagers working overnight shifts cleaning equipment and floors in abattoirs/meatpacking plants.
They interviewed one of these kids, and he was working like 10pm-6am, then going to high school afterward. They obscured the kid's identity because he didn't want to get fired, as he was supporting his family in Guatemala.
It's one of those things where it just strikes me like, how do you even fix that? Like even with the best intentions, are you going to inadvertently derail someone's life, or their family?
...and only outside school hours. If a child is absent from school, the parents will be fined more than the child will earn.