An overseas worker is a household member who is currently out of the country due to overseas employment. He/she may or may not have a specific work contract or may be presently at home on vacation but has an existing overseas employment to return to. Undocumented overseas workers, or "TNT" ("Tago Nang Tago"), are considered as overseas workers for as long as they are still considered members of the household and had been away for less than five years. However, immigrants are excluded from the census.