I think it's very easy for the privileged to talk. Chances are you'll never be stuck in a job where wages race to the bottom. That guy's getting R75 now. Take away minimum wage and he might be lucky if get's much of anything, and with no labour law he'll be working every hour he's awake until his employer kills him, then replaces him with another disposable piece of equipment.
But no legitimate business can employ those people.It'll just make illegal immigrants who will work for R50 per day get the jobs, as they have no legal recourse being here illegally.