I think there is a fundamental difference between
selling labor and selling legal rights. You might
say that someone so financially desperate has de-facto
given some rights to their employer, but coercion is
always illegal (whether or not this kind of person is
likely to seek legal help is another story).
I question that difference. Selling labor is merely selling the legal rights to the product of your labor. Building a dependence into the system by allowing below living wages is something I just don't see ending well.
I'm not convinced I'm correct on this. But at face value, I don't see how it works.
Sounds like you dislike exploitative businesses more than
you care about the homeless. That isn't necessarily right
or wrong, but I think it explains your inclination on the
issue.
I view them as distinct things. And while I certainly encourage ways to get homeless people feeling productive, I don't think getting them below living wage jobs is doing them a favor. Reliable shelter where they are able to get food and necessities while possibly building skills is something I'm incredibly for. And I hate the NIMBY syndrome that is pervading a lot of the city.
Unfortunately, I don't think there is an easy answer. :(