Why else do you go to work?
Your choice of verb tells a lot about what you think of your employees.
In many cases problematic employees can and are removed from EU companies.
Also, surely if they were excellent candidates then you'd be doing your absolute best to keep them around?
Well to be fair excellent candidates are excellent on paper. It sometimes happens (not often, but not once in a blue moon either) that the candidate turns out to be completely unsuitable for the job.
You don't sound like a big company ceo. If you have a good reason, even as a small company, and revenue / affordability is one, you can fire people.
You just need to be able to pay them for min. 3 month if thats your contract length and as a business owner you should know how to calculate.
just to hammer this point home: Every mandatory employee benefit has a huge cost, and adding enough of them kills your economy. It makes it more expensive to have an employee than X many jobs can justify. That X grows every year, and that's X people who cant do that job and get paid money for it.