DIETZ, Thomas, Prof. Dr.

Internationale Beziehungen und Recht mit dem Schwerpunkt auf nachhaltige Entwicklung
Internationale Beziehungen und Recht mit dem Schwerpunkt auf nachhaltige Entwicklung
Institut für Politikwissenschaft
Raum 303
Scharnhorststraße 100
D-48151 Münster
Tel: +49 251 83-24910
Fax: +49 251 83-25136
Sprechstunde: nach Vereinbarung

Thomas Dietz ist Professor für Internationale Beziehungen und Recht. Bevor er nach Münster kam, war er Post-Doktorand an der Universität Oxford und Mitglied im Wolfson College. Er studierte Politikwissenschaft an der Universität Bonn und wurde von der Universität Bremen mit einer rechtswissenschaftlichen Dissertation im Rahmen des Sonderforschungsbereichs 597 „Staatlichkeit im Wandel“ promoviert. Die Forschungsschwerpunkte von Thomas Dietz liegen in den Bereichen Internationale Politik, Internationales- Recht und nachhaltige Entwicklung.

Thomas is Professor for International Relations and Law. Before coming to Muenster he was a Postdoctoral Fellow in the Institute of European and Comparative Law at the University of Oxford and a member of Wolfson College. Thomas holds an MA in political science from the University of Bonn and a PhD in law from the University of Bremen, where he also worked as a research fellow at the Collaborative Research Center 597 “Transformations of the State”. His research is focused on the areas of International Politics, International Law and Sustainable Development.

Lebenslauf und Publikationen
(Curriculum Vitae and Publications)


© Thomas Dietz

Hier finden Sie einen Link zu den aktuellen Veröffentlichungen:

Thomas Dietz, Jennie Auffenberg, Janina Grabs, Andrea Estrella Chong and Bernard Kilian (2018) The Voluntary Coffee Standard Index (VOCSI). Developing a composite index to assess and compare the strength of Mainstream Voluntary Sustainability Standards in the global coffee industry, Ecological Economics (150), 72-87.

Thomas Dietz, Andrea Estrella Chong, Paulino Font Gilabert, Janina Grabs (2017) Women’s empowerment in rural Honduran coffee communities and its determinants, Development in Practice, 1/28, 33-50

Janina Grabs, Bernard Kilian, Daniel Calderón Hernández, and Thomas Dietz: Understanding Coffee Certification Dynamics: A Spatial Analysis of Voluntary Sustainability Standard Proliferation, in: Internation-al Food and Agribusiness Management Review, Volume 19 Issue 3, 2016.

Dietz, T., Börner, J., Förster, J.J. and J. von Braun (2018) Governance of the bioeconomy: A global comparative study of national bioeconomy strategies (ZEF Discussion Paper 264) Download [PDF]

Cutler, A. Claire and Dietz, Thomas (2017), The Politics of Private Transnational Governance by Contract

Dietz, Thomas (2014) Global Order beyond Law, Hart Publishing Oxford.

Thomas Dietz (2014) International Commercial Arbitration and Global Governance: Contending
Theories and Evidence, Oxford University Press (with Walter Mattli eds.).

Dietz, Thomas (2014) The Efficacy of Private Voluntary Certification Schemes: A Governance
Costs Approach. ZenTra Working Papers in Transnational Studies 39/2014. (with Jennie Auffenberg)

Forschungsschwerpunkte und -projekte


(1) Research Group on the Efficacy of Voluntary Sustainability Standards (TRANSSUSTAIN)

Voluntary Sustainability Standards (VSS) have evolved into key transnational governance instruments to bind international markets to fundamental principles of sustainable development. As they continue to extend their influence in international markets, it is of increasing academic and public interest to study the effectiveness of VSS. The research group TRANSSUSTAIN focuses on the effectiveness of VSS in global coffee value chains. The main research question is to what extent VSS are capable of turning global coffee production into a more sustainable industry. The group combines comparative institutional analyses of different VSS with on-the-ground impact studies in different Latin American countries. The group is based at the University of Muenster and INCAE Business School in Costa Rica.

Project Team

Prof. Dr. Thomas Dietz
Principal investigator, University of Muenster

Jennifer Auffenberg
Research associate and PhD Candidate, University of Bremen and University of Muenster

Janina Grabs

Research associate and PhD Candidate, University of Muenster

Andrea Estrella
Research associate and PhD Candidate, University of Muenster

Elisa Benker
Research assistant, University of Muenster

Prof. Dr. Bernard Killian
Cooperation Partner, INCAE Business School

(2) Research Project on international investor-state arbitration and public policy

Today, investor-state dispute resolution before private arbitration tribunals is negotiated and expanded in a series of bi- and multilateral free-trade agreements such as TTIP, TPP, and CETA. Thus not only emerging and developing countries but also highly developed countries are increasingly subject to an extra-legal system evolving beyond the nation state. This development is widely associated with an over-empowerment of international investors as well as undemocratic reductions of sovereign national policy spaces. However, until now these claims have not been subjected to comprehensive empirical research. Through a series of comparative studies this project aims to better understand how the rise of international investment law and investor-state arbitration affects politics and law-making de facto in highly developed countries.

Project Team

Prof. Dr. Thomas Dietz, University of Muenster

Marius Dotzauer , Research Associate and PhD Candidate, University of Muenster

Cooperation Partner: Prof. Dr. Niels Petersen, University of Muenster

(3) Edited Volume: The Politics of Private Transnational Governance by Contract


Prof. Dr. Claire Cutler, University of Victoria, Canada

Prof. Dr. Thomas Dietz, University of Muenster, Germany

The edited volume brings together an interdisciplinary group of international scholars in order to develop a new theoretical perspective on the understudied phenomenon of transnational private governance by contract. In the book we show that most transnational governance instruments (e.g. international arbitration, private regulations or voluntary standards) have in common that they are ultimately constituted through contracts. While contract has been the dominant mode of organizing the economic market for a long time, it has now spread to become a central mode of governance of economic-political relations in a much broader sense. Associated with this is the spread of social and environmental regulation through clauses in contracts between private parties, and the expansion of private dispute settlement as a mode for resolving contractual disputes. The implications of this development for the analysis of transnational governance, power and authority will be explored in the book in depth.