Originally the Bolivian government didnt want young children working legally, but they continually work in coal mines and there is even a child labor union that was protesting for the right to work and consequently collect unemployment. It was the children themselvesl that wanted to work legally rather than be exploited; otherwise, it would be the same as in the USA when illegal immigrants work for extremely low wages or even no wages such as in the tomato slaves in Florida. If its illegal, then the worker, even an adult, becomes exploited.
Your tomato tied to slavery
Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering. ~ R. Buckminster Fuller