economic migrant 
noun
A person who travels from one country or area to another in order to improve their standard of living.Some people coming to Britain are denounced as economic migrants, yet economic migrants from all over the world are encouraged to be doctors and nurses to fill the gaps....
- However, economic migrants and political refugees, chiefly from East Asia, eastern Europe, and Africa, have taken the place of the non-white populace as objects of public concern.
- China, Afghanistan, the Ukraine, Moldova, Iraq, and the former Yugoslavia are among the origins for both economic migrants and political refugees.