[throwawayboise]

Not everyone who works does it for the goal of "living on" that one job. Some people work for supplemental income. Some people (teens) work for spending money and to gain experience. Some people (retirees) work for something to do other than sit at home.

If all jobs had to pay enough to "live on" then most of the people above would be able to work at all, because the jobs simply would not exist.

[minimuffins]

You are setting up a scenario where we have to choose between:

A) teens and retirees having access to low paying scut work jobs

B) eradicating wage slavery for non-teen, non-retirees by making it illegal for employers to pay poverty wages

I don't know if it's really such a simple binary opposition, but if it is, B for me.