Once someone can tell me what, specifically, a living wage is, I imagine this will stop being the most annoying phrase on the planet.
Do you tip your local cashier in the groceries store? Do you tip the bus driver who took you to work? Do you tip a bank clerk who processed your application? If no, then this is a living wage.
Also not having "tips" prevents freeloaders from not paying taxes, which every other worker in the country pays fairly.
There can be a lot of definition but I propose " a wage where you do not need to annoy your customer for tip".