This thesis examines the complexity of legislative decisions within the EU, with a specific focus on the Council of the EU.

The newly established Luxembourg Centre for European Law held its inaugural conference on 10-11 October 2025, exploring the theme of “European Union law and values in a changing world”. Martijn was invited to speak about the relationship between European values and democracy.

On Wednesday 28 September 2022, the Opening Ceremony of the European Law LL.M. took place on campus at Leiden Law School. Following Dr Ben Van Rompuy and Professor Jorrit Rijpma’s warm words of welcome for the incoming students, Dr Vasiliki Kosta presented two student prizes from the preceding academic…

The European Homicide Monitor (EHM) offers a standardized framework for countries and regions to compare homicide characteristics, patterns and trends.

On 12 June 2020 the ESIL Interest Group ‘EU as a Global Actor’ and City Law School London organized a Workshop on ‘The European Union’s External Action and International Law: A View From the Outside’. The event was convened by Jed Odermatt (City Law School) and Ramses A. Wessel (University of Groningen)…

East European Politics is a refereed journal which publishes articles on the government, politics and international relations of the post-communist world.

The researchers examine the Council of the European Union's voting behaviour between 2010 and 2021 and the impact of different independent variables.

Reconstructing language history and prehistory in the context of the Indo-European language family.

Research on this theme concerns the legitimacy and effectiveness of Europe’s institutional order in the face of public alienation and normative contestation.

Three teams of students from the European Law Master (LLM) and the Advanced LLM in European and International Business Law (EIBL) participated in this year’s edition of the European Law Moot Court (ELMC). All teams worked intensively between September and November to submit written pleadings. Two of…

This summer the department of Labour Law at Leiden University will start a new tradition of an annual summer school addressing current issues in labour law from an international, transnational and European point of view. With a mixture of lectures, seminars and a field trip, topics will be explored…

The Europa Institute was represented in all four regional finals of this year’s European Law Moot Court!

Study European politics, society, and international relations across four major European cities: Prague, Leiden, Krakow, and Barcelona. This two-year joint Master's programme offers a unique interdisciplinary experience.

No nation-state can solve today's global challenges on its own. In the specialisation International and European Governance you will obtain a deep understanding of the interplay between the international, EU, and (sub)national governance systems and how this interplay affects the capacity of public…

On 12 September 2024, the official ceremony opening the academic year 24-25 for students of the European Law master’s programme took place at Leiden Law School, organised by the Europa Institute.

The article deals with the influence of the Agreement on the Free Movement of Persons between Switzerland and the EU on the international tax separation, more specifically on the tax separation of tax deductions for natural persons.

The League of European Research Universities (LERU) is a group of 24 leading European research universities.

Research on this theme concerns Europe’s position in global markets, its response to the emergence of new international trade and financial actors that challenge institutions where Europe has long had considerable influence.

Kamerlingh Onnes Building, Steenschuur 25, 2311 ES, Leiden

The center studies the many ways in which issues of law and justice are dealt with in art and literature with a focus on liminal issues and cases. These are issues and cases where law comes to the limits of what it is capable of dealing with and art and literature explore the implications of what is…

Research on this theme addresses the systemic risks faced by European societies and affecting the quality of life of European citizens.

Ben Van Rompuy participated as an invited expert in the 22nd Annual Meeting of the Association of European Competition Law Judges (AECLJ), which took place in Berlin between 30 May and 1 June 2024. The event was co-organised by the European Commission.

Financial Law is a specialisation of the master’s programme Rechtsgeleerdheid (Law) at the renowned Leiden Law School of Leiden University.

We would all like to live in a world in which individuals feel safe, conflicts are resolved peacefully and the interests of future generations are taken into consideration. At Leiden University legal scholars investigate to what extent public international law meets the needs of a globalised society.…

Leiden’s Institute for History has an exceptionally strong expertise in Medieval European History, with specialists whose interests cover virtually the whole continent.

The institute that focuses on Public Law is as broad as the field itself. The Institute of Public Law has six departments, each with its own research agenda.

Civil Law is a specialisation of the master’s programme Rechtsgeleerdheid (Law) at the renowned Leiden Law School of Leiden University.

Arbeidsrecht (labour law) is a specialisation within the master’s programme Rechtsgeleerdheid (Law) at Leiden Law School, Leiden University's renowned faculty of law.

Iris Wuisman and Morshed Mannan of the Company Law department attended a European workshop on blockchain and the law at the European University Institute (EUI) in Florence on 30 November 2017- 1 December 2017.

Welcome to the Business & Law Research Network!

The Private International Law Department provides academic education and performs research in the field of private international law.

The IP Law (Intellectual Property Law) department provides education and conducts research in the field of intellectual property law.

'Law and empirical research' is one of Leiden Law School's four research focus areas.

Constitutional and administrative law covers a broad area of law. It provides the rules with which issues in society can be solved by government authorities.

Are you interested in current affairs, developments in society and people? Are you highly motivated, willing to be challenged and able to go just a bit further in finding creative solutions to legal issues, then Rechtsgeleerdheid is the master’s programme for you.

Philosophy of law is concerned with the the foundations of law.

Almost a century passed since the much-celebrated judgement in the case concerning the Factory of Chorzów was delivered. This 1928 judgement of the Permanent Court of International Justice affirmed the essential principle of ‘reparation’ in international law, claiming that ‘restitution’ is the preferred…

De Leiden Law Academy, voorheen JPAO, verzorgt geaccrediteerde juridische post academische opleidingen en nascholingen in samenwerking met de rechtenfaculteit Leiden en staat garant voor een leven lang ontwikkelen op juridisch gebied. Wij helpen u graag bij het actueel houden van uw kennis en vaardi…

Are you thinking about studying European Union Studies? Learn more and watch the introduction video.

On 24 and 25 September 2021, the 20th Austrian European Law Day took place at the University of Liechtenstein on the topic of

Company Law is a specialisation of the master’s programme Rechtsgeleerdheid (Law) at the renowned Leiden Law School of Leiden University.

European Border Communities provides an overview of interdisciplinary research on the dynamics, challenges and effects of cross border mobilities and the management thereof.

MSc Law and Society brings together students from law and social sciences to examine the dynamic relationship between legal norms and social reality. Its global orientation, interdisciplinary approach, and focus on social justice make this master’s programme unique in its field.

We co-organise our society through law and public institutions. As society evolves, these institutions continually face new dilemmas. Legislators must regulate AI while also fostering competitiveness. Judges are tasked with protecting a healthy environment while respecting democratic decisions. States…

The Institute of Private Law was closely involved in the development of Nieuw Burgerlijk Wetboek (the Civil Code of the Netherlands, which came about between 1948 and 1992). It has continued to fulfil this socially engaged role over the years. It also made a significant contribution to the development…

Research in the International Relations and European Studies Team addresses the interconnections and interdependence of contemporary global political, economic and cultural affairs from a multidisciplinary perspective rooted in the humanities.