Since ours in the US is generally a percentage of the bill, people in expensive restaurants can make more. Do they work harder? Do they have fewer tables so less checks are tipping? 20% tips on 5 hundred dollar tables is $100 every 60-90 minutes, but shifts are usually only a few hours. So maybe $3-400 for a 4-5 hour dinner shift? In a diner you'd are probably half that per table but for more tables and faster turnover. What's a good wage?
agreed, I'm not saying it should be minimum but it shouldn't be any lower because minimum is the law. that's up to negotiations on however baseline wages for every job were set.