IMO a stupid idea by both parties. Most tip is on cc now. Tips are also shared across workers, some cases managers as well. How are you going to break that down. It'd also just be a new loophole others would take advantage of. For instance, recently part time hauling rock for a friend, he's paying me $35 an hour. Why wouldn't I say will do it for $20/hr but allow me to get tip from destination. How much tip can I get for delivery 20,000 lb of rock? Betting i'd be better of correct?