Olle Hammar

Olle Hammar is a researcher at the Center for Migration and Integration Research (CMIR) at the Stockholm School of Economics, and assistant professor in economics at Linnaeus University. 

He obtained his Ph.D. in Economics from Uppsala University in 2021. Between 2021 and 2023, he was a postdoctoral researcher at the Research Institute of Industrial Economics (IFN). He has also been a visiting scholar at the University of California, Berkeley, and Columbia University. 

Olle is also affiliated with the Institute for Futures Studies, I4R, IFN, RFBerlin, and Uppsala Immigration Lab. 

His research focuses on topics related to migration, inequality, and replication.

Selection of publications

Hammar, Olle, Mounir Karadja & Akib Khan, "Social Networks and Immigrant Integration: Experimental Evidence from Sweden", Journal of Development Economics, Accepted (Pre-Results Review). 

Elinder, Mikael, Oscar Erixson & Olle Hammar (2024), "War Policies and Migration Aspirations in Russia", Delmi Report 11. https://www.delmi.se/en/publications/report-2024-11-war-policies-and-migration-aspirations-in-russia/ 

Elinder, Mikael, Oscar Erixson & Olle Hammar (2023), "Where Would Ukrainian Refugees Go if They Could Go Anywhere?", International Migration Review 57(2): 587-602. DOI: 10.1177/01979183221131559  

Elinder, Mikael, Oscar Erixson & Olle Hammar (2023), "Under ytan: Hur många och vilka vill lämna sina länder för att flytta till EU och Sverige?", Delmi Rapport 4. https://www.delmi.se/publikationer/rapport-20234-under-ytan/ 

Hammar, Olle & Daniel Waldenström (2020), "Global Earnings Inequality, 1970-2018, Economic Journal 130(632): 2526-2545. https://doi.org/10.1093/ej/ueaa109 

Hammar, Olle (2021), "Migranters attityder och värderingar", SNS Analys 80. https://www.sns.se/artiklar/sns-analys-80-migranters-attityder-och-varderingar