There are two separate issues here. First, raising the minimum wage, and second is how they are arbitrarily applying such a raise to a narrowly defined subset of employees.
While I disagree with raising the minimum wage to $15, I think that's best left up to local areas or cities. If NYC wants to do that, have at it. I have a much bigger problem with the second issue -- how this is being applied to an arbitrary group of people without any particularly good reason. That's just plain stupid and I'm sure it will get challenged in court.
Apparently it stems from disagreement between that idiot de blasio and the other idiot cuomo. Regardless, it's a dumb way to do it.