Mathias joined the ifo Institute in July 2017 as Deputy Director of the ifo Center for Macroeconomics and Surveys. From 2013-2017, he was Senior Researcher at ZEW Mannheim. He joined IZA as a Research Affiliate in September 2009 when he was a fellow of the Cologne Graduate School in Management, Economics and Social Sciences. He became a Research Associate in October 2011 and continues to cooperate with IZA as a Research Fellow.

Mathias has been involved in various research projects conducted on behalf of national ministries, the European Commission, the European Parliament, the European Central Bank and the OECD. His research interests include empirical public economics and fiscal policy, with particular reference to taxation, social insurance, redistribution and inequality.


IZA Publications

IZA Discussion Paper No. 14998
revised version published in: Journal of Policy Analysis and Management, 2023, 42 (1), 35 - 59
IZA Discussion Paper No. 11440
published in: Journal of Economic Inequality, 2019, 17 (3), 337 - 357
IZA Discussion Paper No. 8598
revised version forthcoming in: International Tax and Public Finance
IZA Discussion Paper No. 7215
revised version published in: International Tax and Public Finance, 2014, 21(5), 845-873
IZA Discussion Paper No. 7190
revised version published as 'Tax Policy and Income Inequality in the United States, 1979–2007' in: Economic Inquiry, 2015, 53 (2), 1061-1085