I live in Austria and you can fire people for pretty much any reason. You have to give them 6 weeks notice, and there are some extra protections for people who are old or who have disabilities and who have been working for your company for a long time, but even then you can fire them.
You can even fire people for getting sick a lot.
And that's assuming you directly hire them as employees in the first place. Many people work via agencies or as contractors, and they have practically zero protections.