They do get tips. The owners do not confiscate them. The tips are pooled collecitvely from the entire restaurant. At the end of the day, the entire tip pool is divided up. This is the reason that they do not have an "incentive" to provide good service as they do in a western restaurant. It is also reason that you will have multiple servers at a table and not one "designated" server. But you definitely should leave a small tip, but no more than 10%.