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Ad Hoogsteder

Ad is managing directeur of SEOR.

Anne Berrevoets studies management and organizational science at Utrecht University.

Arie Gelderblom
Senior researcher

Arie Gelderblom is an economist specialised in labour market theory, the economics of training and education and the position of older workers.

Arie-Jan van der Toorn
Junior researcher

Arie-Jan van der Toorn has studied policy economics at Erasmus University Rotterdam.

Dwayne Ansah studies both Economics and Business Economics and Law at Erasmus University Rotterdam.

Elbert Dijkgraaf is professor empirical economics of the public sector. He is specialized in competition and regulation, and political issues.

Elisa de Vleeschouwer
Junior researcher

Elisa de Vleeschouwer graduated in Economics at Tilburg University with the specialisation Resources, Development and Growth.

Jaap de Koning

Prof. Dr. Jaap de Koning is scientific director of SEOR and professor of labour market policy. He has a broad experience in labour market research and a background in econometrics.

Jan van Ours

Jan van Ours is professor of applied economics, expert in labour market research (in particular from elderly) and research methods and techniques.

José Gravesteijn
Senior researcher

José Gravesteijn specialises in HRM and employment law. She has more than 25 years experience in labour market research.

Kees Zandvliet
Senior researcher

Kees Zandvliet is specialised in labour market analysis of specific regions, sectors, groups and occupations

Lucia Feiters studies public administration at Leiden University.

Martine de Rooij
Junior researcher

Martine de Rooij recently graduated at Erasmus University Rotterdam, where she followed the master program Health Economics, Policy and Law.

Merlijn Gabel studies history at VU Amsterdam.

Mostafa Zeriouh

Mostafa Zeriouh is responsible for the financial management of SEOR.

Paul de Hek
Senior researcher

Dr. Paul de Hek is specialised in quantitative methods and techniques, with expertise in labour economics, macroeconomics and microeconmics

Rik Kriz

Rik Kriz studies both policy economics and law at Erasmus University Rotterdam.

Yara van Hamburg
Junior project officer

Yara van Hamburg is engaged in various activities for all projects of SEOR. Furthermore, she is responsible for the office management and administration.

Yvonne Prince
Deputy director

Yvonne Prince is deputy director of SEOR. She has nearly 30 years of experience in applied policy research and is specialized in topics such as innovation and competition.

About SEOR

SEOR is an independent social economic research organisation linked to the Erasmus School of Economics and provides research and advisory services to both public and private sector clients worldwide.


  • Adress: Marconistraat 16,
       3029 AK Rotterdam, Netherlands
  • Phone: +31 (0)10 4082220
  • Email: seor-secr@seor.eur.nl