The term economic migrant refers to someone who has emigrated from one region to another region for the purposes of seeking employment or improved financial position. An economic migrant is distinct from someone who is a refugee fleeing persecution.
Many countries have immigration and visa restrictions that prohibit a person entering the country for the purposes of gaining work without a valid work visa. Persons who are declared an economic migrant can be refused entry into a try. Thus, the migrant's presence is deemed illegal.