It says what it says! An employer would not be forced to hire ANY help that he thought was economically unjustifiable..... I'm not advocating that any businessman should be forced to employ anybody.... He's still free to make ALL the choices for his business!
Okay so is this what you are saying?
If I own a fleet of tractors and trailers and have someone who manufactures widgets looking for a truck line to haul them calls and tells me "look I can ship these by rail for 30 cents per pound and if you can do better I'll use you" So I go to my calculator and figure that with my fuel and fixed costs that I can't afford to pay the driver but the equivilent of 5.00/hour. The new "living wage" has been established at 6.50/hour. So under your plan the driver that may have been perfectly willing to take the load rather than do nothing will sit at home and have no income due to the fact that I can't offer him a "living wage". Yeah that sounlds good. That is certainly the free enterprise system at work. Now the guy is going to have no income instead of a smaller income. I know the numbers may not reflect reality but the point still comes across. You are not forcing the employer to hire anyone but you would definitely be prohibiting him from hiring people.