Since its foundation in 1947, the International Court of Justice (ICJ) has seen a huge rise in the number of cases brought to it. The tally currently stands at 22 cases. Last week alone, the ICJ issued three rulings in important cases. ‘It’s raining rulings, which is exceptional, ’ Eric De Brabandere,…

In her capacity as a lawyer and expert in International Humanitarian Law and Human Rights, Professor Helen Duffy is filing a lawsuit against the Dutch State. Leiden University’s weekly newspaper Mare reports that through her role, Duffy is assisting a Palestinian Dutchman whose family was killed in…

PhD defence

Is EU law still supreme? Most national high courts have formulated some limits on the absolute supremacy claimed by EU law.

On 2 November 2023, Jorrit Rijpma spoke at a workshop organised by the State University of Milan on a preliminary reference from an Italian court.

The Netherlands is falling behind in Europe with strict asylum policy while other countries are tightening their rules. Mark Klaassen, Assistant Professor in Migration Law, comments in Dutch newspaper ‘de Telegraaf’ that these rules might not stand up in court.

The Dutch State is set to challenge The Hague Court of Appeal's ruling that the Netherlands must stop exporting arms to Israel at the Supreme Court. The government believes that foreign policy falls within the political domain and not within the judiciary. Geerten Boogaard, Professor of Constitutional…

Municipalities are increasingly attempting to solve problems without issuing decisions. A notification procedure (notification – investigation – application – decision) has recently been introduced that replaces part of the traditional application procedure. Ymre Schuurmans, Professor of Constitutional…

A team of researchers at Leiden University’s Europa Institute authored an extensive study on the potential for a Climate and Energy Union within the EU constitutional framework. The study was published by the European Parliament in December 2024.

The powerful Dutch East India Company and West India Company were summoned before the High Court more often than historians have assumed. The complainants varied from competitors, to the Companies' own staff and even poor citizens. This is what Leiden historian Kate Ekama has discovered. PhD defence…

The European Parliament is set to vote on the approval of the new Commission, and some Parliament members have already expressed concern over the controversial appointment of Olivér Várhelyi to the role of commissioner. Armin Cuyvers, Professor of European Law, discusses this issue in Dutch financial…

In the second year of the implementation of the Matra Rule of Law Training Programme, Leiden University hosted a group of 30 civil servants from pre-accession countries in its campuses in Leiden and the Hague as participants in a training on the Administration of Justice that took place from 20-31 January…

Door onduidelijke stikstofregels komen milieuzaken steeds vaker voor de rechter. De zaak van een Reeuwijkse varkenshouder leidt al tientallen jaren lang tot een getouwtrek tussen een milieuorganisatie, de provincie en de rechter. Rogier Kegge, universitair docent Staats- en bestuursrecht, bespreekt…

Several cases inspired by the Urgenda case have now been filed. For example, by the Portuguese, concerning widespread forest fires, Swiss women of a somewhat respectable age (known as the ‘KlimaSeniorrinnen’) who suffer from the heat, and the mayor of a French city situated by the sea who fears the…

On 6 September 2023, the General Court of the Court of Justice of the European Union delivered its ruling in T-600/21 WS and Others v Frontex, dismissing a damages claim brought by a family of Syrian refugees against the EU agency Frontex.

On 22 April 2016, the Social Justice Expertise Center (SJEC) hosted the first global conference for international labour law judges and other adjudicators themed ‘Ensuring Coherence in Fundamental Labour Rights Case Law: Challenges and Opportunities’ at the Academy Building of the University of Leid…

Twee mannen zijn veroordeeld tot zes maanden cel voor het projecteren van racistische leuzen op de Erasmusbrug tijdens de jaarwisseling van 2022 naar 2023. Universitair hoofddocent Marloes van Noorloos sprak met de Volkskrant over de strafbaarheid van dergelijke leuzen.

Female workers at Tesco Stores, a chain of supermarkets in the UK, brought a case to the European Court of Justice claiming they received unequal pay for doing work of equal value to that of their male colleagues.

On Friday 27 November 2015, the conference ‘Law & Sustainable Development’ took place at the University of Leiden, organised by the students of the Mordenate College .

In important cases before the Court of Justice of the European Union (ECJ) in Luxembourg, judgments are preceded by an Opinion of an advocate general. These Opinions are not binding on the Court, but are highly influential in practice.

A delegation of the Child Law Department has attended the World congress on family law and children’s rights in Dublin, from 4-7 June. This congress organised once in every four years was hosted by prof. Ursula Kilkelly (University College Cork). Over 600 people attended the congress; professionals…

Meet Rosa: pleading (successfully!) in an LGBTQIA+ case before the CJEU as an early-career lawyer

On 12 June 2025, Advocate General Ćapeta delivered her Opinion in WS and Others v Frontex, a Grand Chamber case currently pending before the Court of Justice of the European Union. The case concerns a Syrian family that was returned to Turkey in what is arguably a violation of the principle of non-refoulement…

After the 2022 conference on Courts as an Arena for Societal Change in Leiden, COI researchers collaborated with conference attendees to publish a special issue of the European Law Journal covering diverse aspects of the evolving role of courts in addressing environmental and climate issues.

The Case of the Painted Plaster

INFORM (Introduction of the data protection reform to the judicial system) is a project granted by the Directorate-General Justice and Consumers of the European Commission.

Decent work involves opportunities for work that delivers a fair income, care for occupational health and safety, freedom for people to organize and equality of opportunity and treatment for all women and men. The Labour Law department at Leiden University conducts research and provides education on…

This book underscores the interplay between religion and politics (local and global) in the production, escalation, management, mitigation, and resolution of conflict.

Sociology of Policy in Practice focuses on policy-oriented research. It enables you to gain relevant working experience by conducting a three-month research internship in Ghana or the Netherlands.

Do you want to know the best reasons to study at Leiden University or want to know what's it like to live in the student cities Leiden or The Hague? Our students tell you why they chose Leiden University to study their master's programme.

Career prospects are very important these days. The programme European and International Human Rights law provides you knowledge in human rights settings.

The Hague is the Netherlands’ fastest-growing student city, and has been Leiden University’s second location since 2010. In addition to housing the Netherlands’ ministries and government bodies, The Hague is the International City of Peace and Justice and is home to countless embassies, political…

Leiden University College (LUC), an institute of Leiden University in The Hague – the international city of peace, justice, and security – offers the English-taught Bachelor's degree in Liberal Arts and Sciences: Global Challenges since 2010. Inspired by the American university college model, LUC combines…

Students and lecturers from around the world who have obtained international training, experience and exposure bring an international and multi-cultural perspective on psychology and being a psychologist to class.

At Campus The Hague, the University works closely with diverse parties and institutions in the city.

On 10 november 2021, Carmel van Niekerk-Jacobs defended the thesis 'Realising the right to reproduce with assistance in South Africa'. The doctoral research was supervised by Prof. J.J. Sloth-Nielsen and Prof. T. Liefaard.

The work of judges can also be done by AI systems. These systems can formulate an objective proposal for a ruling. But such proposal should always be checked by a judge, says Bart Custers.

Starting this academic year (2016-2017) Maartje van der Woude, Professor of Sociology of Law at the Van Vollenhoven Institute will organize the Leiden Socio-Legal Series (LSLS).

This is an Erasmus+ International Credit Mobility project of Leiden Law School with the University of Rwanda.

Globalisation leads to more contradictions between national and international tax norms. It therefore seems necessary to revise the fiscal legislation. This is not only due to the problem posed by multinationals, but also to changing norms regarding tax burden distribution. Fundamental research on the…

Impressions by Dr. Lilian Ruhe

This research cluster explores processes of cultural creation, reception and transformation within a wide range of societal contexts from the early Middle Ages until c. 1800.

The Department of Child Law and Health Law is a knowledge centre dedicated to academic research and education for both students and professionals in two fields: child law (and children's rights) and health law.

Psycholinguistic research

Rembrandt experts have been puzzling over this painting from 1626 for years. The work may have been commissioned by someone from University circles and may depict a judgment. It can be seen at Gravensteen, a building that served as a prison between 1463 and 1955. This historical building later became…

If you want to maintain a valid penal system, you have to continue to ask the big questions on punishment. Why do we punish people? What is permissible for the government and what is not? Philosopher of Law Jeroen ten Voorde examines these kinds of questions and keeps his academic colleagues and the…

The current migration flow into Europa demands effective measures. Leiden experts examine whether these measures are legal and hold up a mirror to policy-makers.

Industrialised countries extract natural resources in the territories of indigenous peoples, and appropriate the knowledge and culture of these peoples. Leiden anthropologists work to protect the rights of indigenous peoples. Their knowledge and advice enable governments to source sustainable produc…

Although official law generally conceives of personal injury victims as individual rights holders, the actual experience of physical injury and its consequences is relational. Indeed, many researchers in the global North as well as the global South have contended that the very concept of the Self should…

With Brill, LUCIS publishes a peer-reviewed book series, “Leiden Studies in Islam and Society” (LSIS), aimed at an international academic audience.