Jörg Hartmann studies how origin and context produce durable inequalities in life chances and in attitudes, and he does so across fields that are usually kept apart: the employment trajectories of refugees and migrants, East-West differences in access to leadership positions, right-wing populist attitudes, environmental attitudes, and exposure to environmental burdens in cities. The results have appeared twice in the European Sociological Review, and in the International Migration Review and the Journal of Ethnic and Migration Studies, among others. Where the methods were missing he built them: the extension of the Kitagawa-Oaxaca-Blinder decomposition to panel data, published in the Stata Journal and available as the Stata command xtoaxaca. And he works not only with data but on it: he organised the fieldwork of the InRa employee survey across four German federal agencies, some 80,000 people invited and close to 10,000 complete interviews, and in the DFG project SUARE at the SOEP at DIW Berlin he generates and documents the migration-biography variables for the Scientific Use File. He recently edited a Campus volume on ethnically discriminatory attitudes with Holger Lengfeld. He writes for a wider audience in the DIW Wochenbericht, and has been asked about refugees, naturalisation and East Germans in leadership positions by Die Zeit, WDR radio and the Berliner Zeitung.