The master’s programme 'Fiscaal Recht' provides you with in-depth theoretical and practical knowledge on all the ins and outs of tax law.

Simona Demková of the Europa Institute recently participated in the inaugural Czech-Slovak symposium on the challenges of artificial intelligence for administrative law, titled 'Co roboty rozhodovat nenecháme?' ('What Shall We Not Let Robots Decide?'), held on 7 March 2025, at Charles University's Faculty…

Legal education initiative of the Leiden University, the University of Groningen and Universitas Indonesia.

Lecture

This study examines how European state administrations responded to transboundary crises over the past 30 years and the extent of their successful adaptation.

Promotor: J.N. Kok, Co-promotor: W.A. Kosters

The international legal order is in a process of transformation. But how transforms globalization the international legal order? This research programme provides a clearer framework to analyze this..

The monthly ILS Lunch Seminars present the perfect opportunity to unite the different institutes situated within Leiden Law School and are steadily developing into somewhat of a tradition. On Thursday 11 October 2018, the second edition of the monthly ILS Lunch Seminars 2018-2019 will take place. This…

On 9 and 10 November, the Institute of International and European Law of the University of Göttingen and the Minerva Center for Human Rights of the Hebrew University of Jerusalem, organized a conference called ‘Unpacking Economic and Social Rights: International and Comparative Dimensions’.

This study seeks to analyse how job stress could be the result of performing administrative tasks

Vasiliki Kosta participated in the García Pelayo Seminar of the Center for Political and Constitutional Studies, Madrid entitled: ‘Discretionary Powers and Judicial Review: What Destiny for the Principle of Proportionality?’

Just published: Nederlands internationaal privaatrecht Special issue: Private international law and finance

At Leiden Law School of Leiden University, it is possible to take certain post-academic courses on a contract basis. As contract student, you will join the regular students in the classroom. After passing the exam, you will be awarded a course certificate.

In his thesis Tjandra analuses the development of labour law in Indonesia. He focusses on the developments after the fall of the Soeharto regime (1998), the so called reformasi period.

Study information, Student for a day

The Hazelhoff Centre for Financial Law provides academic teaching and performs research in the field of financial law.

At least six people are off to a good start of the summer, because they are the recipients of a Meijers grant. For the next few years, these researchers will be able to devote themselves to their PhD research. Let’s meet these new PhD candidates!

When Dutch citizens request information under the Open Government Act (Woo), third parties can ask the public authority to withhold certain information. Leiden research reveals that the position of these third parties is unclear and accessing information is a difficult process.

Labour law professors have shaped research and education in Leiden since 1936. From the rise of trade unions to the AI revolution, the field has constantly evolved. Major changes are on the horizon again in 2026. 'Labour law will always be important.'

Public International Law is a one-year Master’s specialisation at the internationally acclaimed Leiden Law School at Leiden University. The programme focuses on the legal framework that governs international relations in an increasingly complex global society.

On 18 May 2011, Dr. Ben Knapen, Minister for European Affairs and International Cooperation, delivered the annual Van Vollenhoven Lecture on “Rule of Law and Development”.

From 10-13 June, Martijn van den Brink participated in the EU Law Mountain Seminar in the Czech Republic. This event is a regular gathering of scholars interested in public law in Europe founded by Marco Dani and Jan Komárek in 2017. These are closed events where selected researchers discuss their ongoing…

The Labour Law and Social Security department provides both bachelor’s level and master’s level teaching.

How is law shaped by and shaping social, political and economic change in Indonesia?

The acquittal of Richard de Mos and his fellow party member has caused quite a stir in the Netherlands. Can De Mos simply return to local politics now? And has the issue finally been settled?

Elon Musk managed to foil a strategic Ukrainian drone attack with the push of a button. It clearly shows that democracy is hanging by a thread, says Associate Professor of Constitutional Law at Leiden University and Professor of Digitisation and the Democratic Rule of Law at the Open University, Reijer…

One of the recurring points of discussion within the Criminal Justice research programme is the question of what behaviour should or should not fall within the scope of criminal law. This research theme is examined from a legal-dogmatic and social-scientific perspective.

To what extent does the Law Ombudsperson for Children achieve its goals as intended by the legislator when introducing the law?

The International Air Law Moot Court Competition is a unique opportunity for students seeking to gain experience in the development of arguments in the field of international law and international air law, while also establishing contacts around the world.

From the influx of migrants to the Ukraine referendum: Europe is playing an ever bigger role in our lives. Leiden scientists shed light on developments in Europe and examine the impact of the Union on the lives of its citizens. Read more in the new research dossier on Europe.

On 9 September 2020, Ruben de Graaff defended his thesis 'Concurrence in European Private Law'. The doctoral research was supervised by Prof. A.G. Castermans and Prof. S.C.G. Van den Bogaert.

Are you thinking about studying Public International Law? Learn more and watch the videos.

The Board of Leiden University has appointed Armin Cuyvers as a full professor of European Law, specifically EU Constitutional Law and Comparative Regional Integration, effective per 1 September 2021.

Sustainability and the law lecture series featuring guest speakers discussing legal and social aspects.

Are UN sanctions regimes in need of further formalization in terms of substantive design, procedural architecture and with a view to regulating and governing the interplay with other regimes?

This edited publication aims at reflecting on the future of discussions on the applicability of international law to States’ use of ICTs in the context of highly politicised discussions at the multilateral level and offering practical suggestions for the European Union to pursue its objectives in this…

How can international investment law and arbitration take account of the public interest in, and more broadly, the public dimension of, the relations between foreign investors and host States ?

In this course, you will gain a deep insight into the rules that govern armed conflict, and aim to mitigate human suffering on the battlefield. You will explore the why and how of International Humanitarian Law, followed by the different types of conflict.

Although sexual abstinence before marriage is no longer the central message in The Netherlands the affective relationship as a criterion for professionals within criminal justice can be seen as a more contemporary version of marriage.

Courses in English.

This spring the Netherlands holds the presidency of the European Union. Leiden Europe researchers have taken the opportunity to examine the future of the European Union and where appropriate to give advice. They will present their book on Friday 29 April in Nieuwspoort.

This book offers a comprehensive analysis of the international law applicable to cyber operations, including a systematic examination of attribution, lawfulness and remedies. It demonstrates the importance of countermeasures as a form of remedies and also shows the limits of international law, highlighting…

An important component of your Law and Society master consists of extracurricular activities.

The impact of the coronavirus crisis on the judicial system.

On 26 June 2019, Lisa Louwerse defended her thesis 'The EU’s Conceptualisation of the Rule of Law in its External Relations: Case Studies on Development Cooperation and Enlargement'. The doctoral research was supervised by Prof. C.A.P. Hillion.

Just published: United in incoherence – Private law concepts under pressure from European financial law (in Dutch), in: Tijdschift voor privaatrecht 2017-4

As Europe’s digital regulatory landscape continues to expand, scholars from across Europe and beyond gathered in Florence for a two-day Expert Roundtable on 'Rule-of-Law-Centered Enforcement of the EU Digital Acquis' — an event designed not around lectures or PowerPoints, but around the core academic…

On 12 mei 2020, Darryl Robinson defended 'Exploring Justice in Extreme Cases: Criminal Law Theory and International Criminal Law'. The doctoral research was supervised by Prof. C. Stahn.

Recently, the German Federal Constitutional Court (Bundesverfassungsgericht) issued its second preliminary reference to the Court of Justice of the European Union. Following its earlier reference on the European Central Bank’s bond buying programme Outright Monetary Transactions, the German court now…