Alien Work Authorization -- See Foreign worker certification Here are entered works on the legal process by which it is determined that able, willing, and qualified workers cannot be found in a particular location for a particular job and that employing foreign workers will not adversely affect the wages and working conditions of similarly employed domestic workers.
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Aliens -- See Noncitizens Here are entered works on persons who are not citizens of the country in which they reside. When this heading is assigned to works on noncitizens who permanently or temporarily relocate across national borders without complying with the legal requirements of the destination country, the heading Illegal immigration is also assigned.Works on those persons who have no citizenship are entered under Stateless persons.
Aliens Employment -- See Foreign workers Here are entered works on nationals of one country working in another country. Works on laborers who migrate from one section to another section of the same country are entered under Migrant labor. Works on employment opportunities in foreign countries are entered under Employment in foreign countries.