Columbia subject headings:
Foreign workers--Legal status, laws, etc.
Foreign workers--Legal status, laws, etc.--European Union countries.
Human rights--European Union countries.
Human rights.
Migrant labor--Legal status, laws, etc.
Harvard subject headings:
Foreign workers--Civil rights.
Foreign workers--Legal status, laws, etc.
Princeton subject headings:
Foreign workers--Legal status, laws, etc.
Foreign workers--Legal status, laws, etc.--European Union countries.
Human rights--European Union countries.
Human rights.