But may be an incentive? It's a tricky question full stop, there are those who take advantage of benefits, there are those whom need the help. Unfortunately a few rotten apples (and increasing) spoil the barrel, I wouldn't feel it fair to tar everyone with the same brush, that's to easy. There are many different reasons why people may need the support, poor education, family background, unemployment statistics. Students are coming out of University with little prospect in the current job market and $31,700+ student debt to start with.
But regardless of random drug testing, the capable definitely should be involved in some kind community work, if only for their own self image, it certainly wouldn't hurt anyone, that's for sure ; )
When you raise the minimum wage, everything else goes up in price as a result. Other prices adjust to cover the cost of even a $.25/hr increase in the minimum working wage, so everyone makes more, but everything is worth more at the same time, thereby making the minimum wage, still, the minimum wage and those on it, the absolute bottom rung, financially speaking.