You only have to look to Denmark to see this in action. And mind you we don't actually have a national minimum wage. Instead it is negotiated between employer and the unions. The unions have historically been strong.
Basically you end up with a lot of people unemployable because they don't have the necessary skills needed and thus are not worth the salary for even entry level jobs.
As society requires more and more skilled people the bar is raised and the number of people who are unable to land a job because of inadequate skills are rising.
Add to that that automation is an even bigger competitor than China and you have all the ingredients for an explosive cocktail of demise.
Basically you end up with a lot of people unemployable because they don't have the necessary skills needed and thus are not worth the salary for even entry level jobs.
As society requires more and more skilled people the bar is raised and the number of people who are unable to land a job because of inadequate skills are rising.
Add to that that automation is an even bigger competitor than China and you have all the ingredients for an explosive cocktail of demise.