Anecdotal, but there's a supermarket chain in the Southeastern U.S. (Publix) that pays their employees a living wage, provides health coverage, and makes a point of letting the customer know that staff (even the folks that load your groceries into your car) doesn't accept tips. The food costs are a little bit higher than, say, Walmart, but closer to that end of the spectrum if Whole Foods is the opposite end. I don't know how well that model would translate to the restaurant industry but, personally, I would give preference to establishments that opted for that model than the current $2something/hour minimum wage + tips.