In Finland everyone can go to the tax office and see the incomes of everyone (with a ~1.5 years delay, i.e. 2023 is the latest today).

I know what my colleagues and friends make. I think the only thing it would affect is, that if I felt that I was making less than I should, I would start looking for a new job.

Finland (Suomi) basically means a swamp (suo).

If you look at the etymology, there are other explanations of the origins, but a modern person would associate the name with a swamp. I guess it makes sense with all the lakes.