Paris School of Economics - École d'Économie de Paris

Economics serving society

Katrin Millock

Katrin Millock

PSE Professor

Research Fellow CNRS

Campus Jourdan – 48 Boulevard Jourdan 75014 Paris

4th floor, office 20

Phone +33(0)1 80 52 17 86

  • Environmental Economics & Natural resources
  • Sectoral Regulation: health, schools, energy, transportation...
  • Migrations
  • Public Economics

Migration and Environment

Migration and Environment

ANR project MIGREN (ANR-09-JCJC-0127) aimed at undertaking fundamental research using economic tools to model both theoretically and empirically the relationship between environment and migration. On the empirical side, we have found evidence of rainfall variability acting as a push factor for household migration in some African countries, through its effect on agricultural income. We also could not reject the push factor hypothesis on data on inter-state migration in India, for which there seems to be a direct effect of climate variability on bilateral migration rates. The effect is small, though, and for Indian inter-state migration we thus conclude that other factors, mainly economic and also political in the sense of barriers to migration (such as language and distance), had a larger role in explaining observed migration flows. The project has also contributed to creating a database on water basin river flow to more accurately capture true water availability and this data has been used in several forthcoming papers. As for the impacts of environmentally induced migration flows, we found that weather-induced migration flows in Uganda reduced the probability of employment of non-migrants in the receiving regions, and that the effect was higher in regions with lower capital mobility. Ongoing theoretical work suggests that fiscal and immigration policies aimed at reducing the relative returns to informality can also effectively reduce pollution. Furthermore, it is possible to identify a socially optimal policy mix (between fiscal and migration policy), and show how it reacts to different specifications of the social welfare function.


Below you can find the English and French summary from the final report on this project:

Résumé consolidé public français

English summary