In Austria, vacation days expire two years after the end of the vacation year in which they were created. So you can save up vacation days, but not all of them for four years. You can do things like: go on only two weeks of vacation in year 1, then eight weeks in year 2.

California doesn't allow "use it or lose it" vacation policies. Vacation rolls over up to a reasonable amount, which apparently isn't super well defined, but my employers have generally set a limit of 2x annual.

Employed in the US, I can stack up to 240 hours. After that it's use it or lose it, so I just take a few hours off every week.

Depends on the job. Some will let time carry over.... It's pretty rare to carry over for more than a year.... Anon is a dumbass.

Where dafuq it stacks?

Jobs for my state's state government, for example, You get an hour of time off for every so many hours worked and they accumulate and are retained indefinitely up to a cap.

Fairly certain it stacks in more western nations than it doesn't. I know a woman in Australia who fucked off for almost a full year after saving up time for a decade.

United States Postal Service, 440 hours (55 days) max accumulation of annual, temporarily increased to 520 hours/65 days since the pandemic, and unlimited sick leave rollover. Accumulated at a rate of 13 annual days and 13 sick days per year once you’re a career employee, and 20/13 after 3 years.

In France, companies can choose if they stack or not, but you're usually forced to take them after a certain amount has accumulated.

In Czechia (not sure if by law) you can take half of your days off to thr next year. So, if you had 20 days off a year, you have to use 10 (HAVE to, they don't just fizzle out) you can stack 10 to the next year, so you can have up to 30 a year.

I worked at a place where I could carry over something like 2 extra weeks I think?