The first edition of the flagship "The Oxford Encyclopedia of EU Law" (OEEUL) was released in August 2022 by Oxford University Press. The Encyclopedia has been published as part of the prestigious Oxford Public International Law series. 

Written by the leading scholars in the field, the articles grouped in the Encyclopaedia offer cutting edge and complex reconstruction of the of the essence, nature, development and history of the European Union law. The articles cover highly specialized and multi-faceted analysis of the European law. They address a focused range of topics such as the EU citizenship, common commercial policy, competition law, consumer protection, data protection, Economic and Monetary Union, energy, the environment, European integration, general principles, health, judicial protection, social policy, supporting policies, transportation, and the values of the European Union.  

One of the editors of the Oxford Encyclopedia of European Union Law and member of the Editorial Board is prof. Tomasz Tadeusz Koncewicz, who was responsible for preparing the novel part devoted to the Values of the European Union. He is also the author of the introductory and ground-setting analysis “Values". Among the authors of the articles in the Encyclopedia are also members of the Department of European Law and Legal Comparative Studies at the Faculty of Law and Administration of UG. Prof. Monika Adamczak-Retecka published entry on "Environmental Justice”, Dr. Olga Śniadach on “ olidarity” and Dr. Marcin Michalak on the "Separation of Powers”.