That graph is over the past 20 years. Even during post-2008 recovery, labor force participation rates decreased. Of course the pandemic is going to cause a spike, but the general trend is undeniable.[1]
What's your point? We already know that high labour costs (as in a liveable wage even for so called simple jobs) doesn't necessarily cause high unemployment. Northern-European countries have proven it for ~70 years.
I'm sorry, but you're incorrect on two matters of fact.
First: the EU's labor force participation rate is significantly lower than the US's (58.3% in 2019 vs 63.4%). If the US had the EU's LFPR, we'd have 13 million fewer jobs.
Second: Denmark, Austria, Finland, and Sweden all lack minimum wage laws. They have other programs that benefit poor people regardless of whether they have a job or not.
1. I didn't write EU, I wrote Northern-European countries.
2. While true, it isn't a fact supporting your point. The main reasons for the lack of minimum wage laws are because of high degree of unionisation and the widespread use of collective bargaining agreements.
