The thing is: The requirements that legislators are setting for employers are fundamental social security services.
Whether a worker gets paid sick leave and vacation, health insurance and unemployment insurance is therefore not up for the debate in most Western countries.
Some people may claim that they don’t need or want these services, but the reality is that everyone needs them as everyone needs vacation at some point, will get sick or fired.
And because of that it’s good that the law requires them to be mandatory. This is also why so many people from low-income households in the US have trouble to afford a visit to the doctor or vacation.
Those things aren’t a problem for most workers in European countries.