The Jante Law applies everywhere.
The ten rules of Jante state:
You're not to think you are anything special.
You're not to think you are as good as we are.
You're not to think you are smarter than we are.
You're not to convince yourself that you are better than we are.
You're not to think you know more than we do.
You're not to think you are more important than we are.
You're not to think you are good at anything.
You're not to laugh at us.
You're not to think anyone cares about you.
You're not to think you can teach us anything.
These are silent rules that are at play more or less everywhere in the world. Disclosing your pay serves no other purpose than bragging or making people jealous. Just don't. Don't be a shitstirrer!