Jay Porter wrote in Slate, Tipless restaurants: The Linkery’s owner explains why abolishing tipping made service better
"When we switched from tipping to a service charge, our food improved, probably because our cooks were being paid more and didn't feel taken for granted. In turn, business improved, and within a couple of months, our server team was making more money than it had under the tipped system. The quality of our service also improved. In my observation, however, that wasn't mainly because the servers were making more money (although that helped, too). Instead, our service improved principally because eliminating tips makes it easier to provide good service."