Duration of assignment (tour of duty) is the period of time, during which a staff member is expected to be in the position s/he has been selected for and accepted. Minimum duration of assignment (tour of duty) is the minimum period of time a staff member must stay in a position. Maximum duration of assignment (tour of duty) is the maximum period of time a staff member is allowed to stay in a position.
A TA is a staff appointment governed by the amended UN Staff Regulations and Rules for activities expected to be of a finite and temporary duration not exceeding one year and 364 calendar days.
Movement of a staff member from one organization to another under conditions which give the staff member no right to return to the releasing organization.