I live and work in Belgium.

0 days off if you haven't worked the year before (technically illegal is the EU, and they will allow you to take paid days off if you file for "EU days off" but then they deduct it from your following year. Damn loopholes.)

12 if you haven't worked but work 40 hours instead of 38

20 days off required bt government after the first year

10 or so national holidays that are paid by default

42 in total generally, with some rolling if unused.

Almost Unlimited sick days if you get doctor's notes (there are also house visiting doctors and a normal doctor visit is 4€). Some jobs that are toxic will send doctors employed by them to your house to make sure you are sick.

After the first year it is quite nice.