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Prof. Dr. Günter W. Beck


Günter Beck joined the Department of Economics at the University of Siegen in 2011. Before, he worked as a Juniorprofessor (Assistant Professor) at the Goethe University Frankfurt and as the coordinator of the program "Central Banking and Monetary Economics'' of the Center for Financial Studies in Frankfurt. He studied economics at the Universities of Bonn and Berkeley and received his PhD in economics from the Goethe University Frankfurt.

His research interests include optimal monetary policy under uncertainty, causes and consequences of heterogeneities in monetary unions, and the determination of international relative prices. He has published in leading academic journals including the Journal of Monetary Economics, the Journal of the European Economic Association and the Journal of Economic Dynamics and Control.


PD Dr. Jürgen Ehlgen 



Jürgen Ehlgen studied economics at the University of Siegen, where he also received his doctoral degree. Upon graduation, he joined the faculty as an assistant professor. Currently, he is the chief executive officer of the examination office.

The main fields of interests of Jürgen Ehlgen are monetary theory and policy as well as theory and empirics of business cycles. His publications include "Computing the Moments of the Filtered Variables in a State-Space System", Applied Economics Letters, 1998; "Distortionary Effects of the Optimal Hodrick-Prescott Filter", Economics Letters, 1998; "A Nonrecursive Solution Method for the Linear-Quadratic Optimal Control Problem with a Singular Transition Matrix", Computational Economics, 1999; "A Simple Algorithm to Factorize the Autocovariance Function of a Moving Average Process", Computational Statistics, 1999.


Prof. Dr. Jan Franke-Viebach 



Jan Franke-Viebach studied economics at the University of Münster where he received his doctoral degree in 1988. From 1984 to 1993 he worked in the research department of the German central bank (Deutsche Bundesbank). He joined the University of Siegen in 1993.

His main fields of interest are in international economics, with an emphasis on international financial economics.


PD Dr. Michael Gail 



Michael Gail received his doctoral degree in economics from the University of Siegen in 1998. In 2004 he received the venia legendi in economics. He is currently the managing director of the faculty and a senior lecturer in economics. He was stand-in professor at Goethe University (Frankfurt/Main) and the University of Duisburg-Essen.

His main research interests are monetary economics, dynamic macroeconomics and DSGE models.


Prof. Dr. Carsten Hefeker 



Carsten Hefeker is professor of economic policy at Siegen where he has taught since 2006. He also is a research fellow of CESifo in Munich and of HWWI in Hamburg. Before coming to Siegen, he served as head of department at the Hamburg Institute of International Economics (HWWA), as assistant professor of economics at the University of Basel in Switzerland and as a research fellow at the Centre for European Policy Studies (CEPS) in Brussels, Belgium. He studied at the Universities of Hannover and Konstanz and holds a doctorate from Konstanz University.

His main research areas are international economics and political economy and institutional economics.

Dr. Alexander Hoffmann


Alexander Hoffmann studied mathematics at the University of Siegen from 2003 on until 2008 when he received his diploma. Afterwards he started to work on his dissertation in mathematics which he finished in 2011. In the same year, together with Christian Friedrich he founded the start-up company 'Statmath' which focuses on providing quantitative analyses for companies. Because of the strategic concept underlying this company and its large success from the very beginning, he won the founder of the year award ('Gründer des Jahres 2011' Preis) of the Südwestfalen region in 2011. Since 2012 he regularly works as a guest lecturer for the faculty of economics at the University of Siegen.

His major areas of interest include the development of mathematical models to analyze comprehensive micro data sets.


Prof. Dr. Matthias Hunold


Matthias Hunold is professor for applied microeconomics at Siegen. Before coming to Siegen, he was assistant professor at the Düsseldorf Institute for Competition Economics (DICE) and worked at the European Commission, at an economic consultancy, and at the Center for European Economic Research (ZEW). He completed his diploma degree and Ph.D. in economics at the University of Mannheim. 

His theoretical and empirical research mainly addresses questions in industrial economics and competition policy, including supply relationships between manufacturers and retailers, mergers and acquisitions, cartels, and digital platforms. He has published in outlets such as the Journal of Industrial Economics, Marketing Science, and the RAND Journal of Economics.


Prof. Dr. Sebastian G. Kessing



Sebastian Kessing studied economics at the Philipps-University Marburg, the Universidad de Chile and the Free University of Berlin. He pursued his graduate studies in economics at the European University Institute in Florence, earning his Ph.D. form the Free University of Berlin in 2003 under the supervision of Kai A. Konrad and Giuseppe Bertola. He has held academic positions at the Free University Berlin, the University of Warwick and the Social Science Research Center Berlin (WZB) and a policy position at the European Commission (DG Economic and Financial Affairs) before becoming full professor of economics at the University of Siegen in 2009.

His research concentrates on a variety of issues in public economics, including optimal taxation, federalism and decentralization, public goods, and labor market institutions, among others. His work has appeared in leading international journals such as the Economic Journal, the Journal of Public Economics, or the European Economic Review.


Prof. Dr. Karl-Josef Koch



Karl-Josef Koch joined the University of Siegen in 1997 as a professor of Economics. He received his Diploma degree in mathematics/ computer science from the University of Bonn, a doctorate degree (Dr. rer.pol.) under the European Doctoral Program for Quantitative Economics from the University of Bonn, the Catholique University of Louvain-La-Neuve, and the London School of Economics and the Habilitation from the University of Konstanz.

The main fields of interest and research of Karl-Josef Koch are General Equilibrium Theory, Industrial Economics, International Trade, Regional Economics, and Economic Growth. His publications include ‘Multi-dimensional transitional dynamics: a simple numerical procedure (with Thomas M. Steger und Timo Trimborn), 2008, Macroeconomic Dynamics, 12, 301-319, and ‘When economic growth is less than exponential (with Thomas M. Steger und Christian Groth), 2010, Economic Theory, 44 (2), 213-242.



Dr. Jannika Schad




Jannika Schad is a microeconomist and teaches primarily in the fields of industrial economics and regulation. Before coming to Siegen, she completed her Ph.D. in economics at the Düsseldorf Institute for Competition Economics (DICE).

Jannika’s current research focuses on microeconometric analyses of topics in digital markets, such as agglomeration on real estate portals, user ratings on sales platforms and data privacy. She also develops theories and conducts experiments in areas like merger control and cartel prosecution.


PD Dr. Lars Siemers




Lars Siemers is interim professor for Applied Microeconomics at the University of Siegen, where he has taught in economics since 2011; in the years 2011 to 2017, he was interim professor for European Economic Policy in Siegen. He studied at the Ruprecht-Karls-University at Heidelberg and at Swansea University in Great-Britain. He holds a doctorate from Heidelberg University and habilitated in Siegen. He worked from 2005 to 2011 as researcher and consultant at a Leibniz-Institute for Economic Research (RWI Essen) at the Department for Public Finance and Economics. He advised, e.g., the European Commission and several Federal Ministries in Germany. Moreover, he also taught at several other universities (e.g. in Bochum, Cologne, Essen, or Mannheim).

His major research interest is dedicated to Public Finance and Economics, Public Choice / Political Economy, and Development Economics, with an applied and mostly empirical focus. He published, e.g., in the Journal of Health Economics, the Journal of Law and Economics, in Macroeconomic Dynamics, Public Choice, or the Journal of Conflict Resolution.

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