If this were the route that would happen, it could be valuable. I would stress safety at the forefront of all things to protect these youth, especially if you're looking at earlier ages than high school. In elementary school I participated—they used to have it back then—and I think it would be great to bring it back. However, there were dangers associated with it, certainly.
I would suggest this. The government could easily form a committee of professionals who have resources that could guide this process, give input to what those programs should be and what they should not be. This is so we're not empowering people to become victims of the underground economy, working for unscrupulous employers who would put them to work with minor skills and not a full trade qualification and competency within their purview.
That would be my recommendation.