International Migration, Ethnicity and Economic Inequality / Forschungsinstitut zur Zukunft der Arbeit / Institute for the Study of Labor, April 2008
PDF - http://ftp.iza.org/dp3450.pdf
IZA DP No. 3450
Martin Kahanec, Klaus F. Zimmermann
"While the allocative efficiency of mobility is typically considered to be positive but small in the long run, the induced changes in equality may be considerable in size. In practice, however, migrants typically improve their income position in comparison to those at home, stimulate the economic situation of the sending countries through remittances and rise the economic performance of natives and of capital in the host country through complementarities..."