I haven't heard that line in ages.... Making like a tree and leaving.

When you are working from home, clear your workspace of visual clutter. If you can, remove pictures from the wall behind your computer screen. Your brain sees these visual images and needs to work to ignore them. If you give a location a try and your eyes want to dart around to images behind your screen, it means your brain is struggling to ignore those images. If you find that you get bleary eyed and find yourself staring into space or at something, it means you brain is struggling. Take a break and close your eyes for a moment. If you need to read a document, try using text to speech and closing your eyes. Most computers have text to speech. In Windows, it is usually under Accessories in the program list.

Here in the US, we have the time off you mention. It is called FMLA (Family and Medical Leave Act) They don't usually pay your wages but that is what saving accounts are for. Either way, the employee pays for time off in reduced wages, higher taxes, or other benefits trade-offs. In Germany, the employer calculates your wages to include the government mandated annual vacation/sick time off.

Just like with concussions, there are no free lunches.

My best to you.