US citizen who worked in New Caledonia for 2+ years. The scariest part is that I don't have any official documentation for what I earned. I had access to our payroll system that records the amount I earned in the local payroll system -- I didn't generally have a need to convert that to USD every pay period and record it. I was paid "in kind" for housing. And at the end of it all I got an unofficial letter stating what that amount was.