Don't be fucking stupid. Every janitor will be a salaried 'maintenance manager' working 65 hr weeks for less than minimum wage, the restaurant industry already does this. Have you ever read a book on the labor movement? Here's one to get you started:
The Jungle
If the repubs wanted to allow child labor again there is a significant % of this country that would think it's a good idea. It's just too fucking bad I have to share my oxygen with them. Every advance we've made in human rights and the rights of the working man, fucking cool-ass conservatives want to throw it all away the first time some cocksucker in a cowboy hat tells them it's bad for the economy. I hate you all.