This would in effect force employers to pay better.
However, due to the hedonic treadmill, after people get accustomed to it and take things for granted, people will find reasons to be unhappy and frustrated and claim that they live in the worst possible times etc.
EDIT: just to be clear: I'm not saying that since people will complain there is no point in improving, nor I'm saying that you don't have to listen people's complaints since they just don't know how lucky they are. It's important to keep improving more and more, since there is still room for improvement. What I'm saying is that it's hard to compare the quality of life in different places just by measuring how many people are complaining here or there.
With $50/hr you will have your pick of providers.
Besides if 50 dollars an hour becomes minimum wage for everyone you can bet your years salary that healthcare providers are going to raise their prices accordingly.
By that I mean universal healthcare, guaranteed sick leave and childbirth leave as well as minimum 3-4 weeks vacation a year and a good unemployment system.