I don't understand what isn't making sense to you, WAHa, so let me try simplifying it as much as possible; If it is possible for someone to collect welfare and in doing so collect nearly as much as, if not more, money than they would collect by working full-time, their incentive to seek employment is greatly reduced. Do you not agree?
You ask me for stats -- what do you want the stats to say? The argument I make above doesn't need stats; merely logic.