Those in poverty and the foolish would spend their money on expensive consumer items and long vacations that produce no income later, falling back into poverty because they can't/wont work.
The moderately intelligent would continue to manage money reasonably well and would spend their money conservatively until various circumstances whittled down what they had until they had to go back to work to stay afloat.
The rich (those evil bastards) would be clever and would save their money, work hard although they already had pleanty of money, invest it well, take risks, employ others and acquire money from the other two groups.
In a matter of 5 to 10 years, the poor, middle class and rich will shuffle themselves back to their respective places. And you will have to redistribute wealth again so that things will "be fair".