In the first world, we have employee protections that mean that a) pulling stuff like this in the first place is illegal and that b) bragging about it on social media means that when you get dragged in front of an employment relations tribunal, your lawyer caves their forehead in with their palm and tells you that you owe back pay and penalties
If the US was actually socialist it wouldn’t need employment tribunals because people like this wouldn’t have the power to pull this crap in the first place.
All employment tribunals do is allow capitalism to exist as it currently does, but with a few breaks applied and with a steering wheel.
In the first world, we might have protections against firing but companies can deny vacation day requests for project reasons and if you don’t go to work you will have consequences, legally.
That’s the point where you call in sick and stay home anyways. Can get fired for not coming to work, can’t get fired for being sick
You shouldn’t get fired anyways, but here in Spain if you miss work because you are sick you need to have a note from your doctor justifying that staying at come was the correct choice, so you wouldn’t be able to call in sick.
You wouldn’t be able to be fired either, the company needs several heavy failures from a worker to be able to legally fire them. Companies usually decide to lay off people instead. Since you didn’t go to work, the company would be entitled to subtract whatever they pay you in the hours you weren’t there (which is way more than what you end up getting post taxes, so be prepared to earn way less than the days you missed), so there would be SOME consequence.