Definition: Contract migrant workers
Migration statistics - UNO
Persons working in a country other than their own under contractual arrangements that set limits on the period of employment and on the specific job held by the migrant (that is to say, contract migrant workers cannot change jobs without permission granted by the authorities of the receiving State).
United Nations, "Recommendations on Statistics of International Migration", Revision 1, Statistical Papers, Series M, No. 58, United Nations, New York, 1998