Also an ex-patriate is typically in the professional class. So those "English" teachers who teach in Japan, etc., may think of themselves as ex-pats or try to frequent "ex-pat" hangouts but they aren't necessarily because of two things: one, they have not been working at their home office and then transferred and typically they do not hold prelesional degrees -though they may hold "certificates" or whatever. They are in effect temporary workers on a limited stay visa, often needing annual renewal by hopping to a third country to have it renewed themselves. For ex-pats all this or arranged by their employers.