I feel like there would be a number of arbitrage opportunities that would become available as well, though it's late and I can't think of any off of the top of my head. How it affects the currency exchange markets would be interesting as well. IMHO, a better option would be to provide Tax credits to employers for each employee's pay up to the poverty line. If employers don't pay poverty level wages, the government is stepping in with federal benefits. A tax credit is a more efficient transfer mechanism than the current system as well, but still encourages some sort of productivity.