This seems like an interesting study, but I'm not sure its conclusion makes sense to me. Am I understanding the facts correctly:
1. Employment stayed about the same.
2. Employees overall were payed a lot more.
3. The number of low wage employees (which I assume means those making the new minimum wage) dropped. However employees overall were payed more. My understanding is that this means that employers switched to paying more of their employers above the minimum wage.
4. They say that the average low payed employee made $125 less. However, its not clear to me what that means in light of the other points.
5. The study did not include larger corporations that have employees in multiple cities.
Several different interpretations were suggested:
1. Companies are hiring more skilled employees for higher wages and pushing less skilled employees out of the market.
2. Small businesses are being hurt and large businesses are taking their place.
3. Companies are paying employees more.
4. The results are due to some aspect of the economy that wasn't controlled for.
It seems to me that the conclusion that this is bad for those who advocate for higher minimum wages isn't very strong unless they could show that it was actually pushing low skilled employees out of the market.