Conservatives could employ the marginal instead of arguing that the marginal should magically make themselves functional in specific ways (the bootstraps argument).
There are a variety of ways to do this, as it is possible to employ many of the marginal *who want to work*. This is not that hard to determine.
By marginal I mean people like ex-criminals, ex-drug addicts, and so forth. A lot of these people can still do work and want to, but it is very hard for them to find work. Sometimes privately funded job provision is the way to grant people dignity and a chance to be responsible for their lives. It is a perfectly valid form of charity.