Could someone provide me with good resource to compare US salary employment, vs. EU normal 40hours week employment? Because here in EU it's pretty normal to wo

Could someone provide me with good resource to compare US salary employment, vs. EU normal 40hours week employment? Because here in EU it's pretty normal to work full time and also being self-employed and do your own things. Would be crazy, that your employer can dictate what you can do with your free time. I mean, there is automatic non-compete clause by law, but in this case you usually let your employer hire you as self-employed from the start.