The European Society of International Law (ESIL) awarded its 2020 Book Prize to Daniel Peat, an Assistant Professor of Public International Law at the Grotius Centre for International Legal Studies at Leiden Law School. The ESIL Book Prize is awarded annually 'for an outstanding published work in the…

Leiden is the place for Law

Research at Leiden Law School means research at the highest level. Leiden Law School has eight broad research programmes and one specific ‘profile area’: Interaction between legal systems - which aims to understand the complex interaction between the various levels of jurisdiction and to solve the resulting…

The European Commission has started an investigation into possible illegal state aid from the Netherlands to Nike. It is high time that agreements between Tax Authorities and multinationals are made public, says Associate Professor in Tax Law Jan Vleggeert.

In this PhD-thesis several new and existing data science application are described that are particularly focused on applications for tax administrations.

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 ?

This PhD dissertation examines international responsibility for the crime of aggression from a public international law perspective. Under customary international law, as well as the amendments to the Rome Statute of the International Criminal Court adopted in the Review Conference in Kampala in 2010,…

Leiden Law School is currently housed in two beautifully restored historic buildings located in the old centre of Leiden. We also have facilities for teaching and research at Campus Den Haag.

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..

Leiden Business Law student Raz Ahmad has won the ECHO Loyens & Loeff Law & Tax Award 2019. The ECHO Awards are presented each year to excellent students in higher education with a non-western background.

This book is the first to incorporate current academic literature and case law on European, transnational, and international media law into a comprehensive overview intended primarily for students.

From 28 February to 4 March 2018, the Leiden WTO Moot Court team participated in the European Regional Round of the 16th ELSA Moot Court Competition on WTO law which was held in Naples, Italy.

Taught within the Centre for Law in the Information Society, this programme takes a multidisciplinary and international approach when addressing the modern legal challenges posed by digital technology.

Complex systems can be characterized as systems in which multiple components interact with each other, often in non-linear ways. The main goal of this research will be to investigate if and how the international tax system can be defined and modelled as a complex system. Approaching the international…

How do commissions of inquiry operating in conflict situations utilize international law, and how can inquiry findings be utilized by other bodies belonging to the international legal community?

Irma Johanna Mosquera Valderrama, principal investigator of the ERC GLOBTAXGOV project and Associate Professor of Tax Law has participated in the T20 task force on Trade, Investment and Tax Cooperation under the Argentinian Presidency. As a member of the task force, she has contributed to the policy…

This publication examines the issues regarding the cross-border resolution of financial institutions, focusing on the power allocation between the home and host resolution authorities, i.e. the jurisdiction rule.

How can we assist Universitas Indonesia's department of International law to improve their educational and applied research programs on Transnational Law, Asset Recovery and International Investment Arbitration, with an eye on Indonesia’s security and rule of law reform agenda and the needs of the…

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.

Research is the basis for good security policy. By analysing the motives of radicalised people and identifying the biggest risks in the area of digital communication, Leiden University researchers are helping governments to formulate effective countermeasures.

After the kick-off on 28 November, the next ILS Lunch Seminar will take place on Monday 19 December. During this lunch seminar series all researchers from Leiden Law School can present their research. The idea is to hear in a simple and nice way what researchers from other research programs and institutes…

How do national legislatures incorporate and embed the rules and principles that enter the private law system?

Maarten Aalbers was invited as a guest speaker by the University of Bergen (Norway) to present his views on the joint application of state aid law and free movement law concerning the adoption of sugar taxes.

Last Thursday, the final ILS Lunch Seminar of 2018 took place. Irma Mosquera Valderrama, Adrián Grant and Frederik Heitmüller gave two very insightful presentations on Global Tax Governance, part of the EU-ERC project ‘A New Model of Global Governance in International Tax Law Making’ (GLOBTAXGOV).

Social science research helps us understand human behaviour and social structures. These are determined by various factors, which makes the research complex and increases the likelihood of drawing the wrong conclusions. The choice of research method and analysis is therefore extremely important. It…

The International Labour Organisation (ILO) was established in 1919 based on the premise that social justice is a condition for lasting peace. On February 2019 the ILO celebrated its 100th anniversary with an international symposium to consider the future of the ILO.

A punishment that fits the crime is the cornerstone of the rechtsstaat or constitutional state. But opinions differ greatly on what constitutes a just and effective punishment. Research by Leiden University provides politicians, legislators, law enforcers and the public with new information and insights…

Methods of treatment for chronic illnesses are limited. Doctors and researchers at Leiden University Medical Center (LUMC) and Leiden University are working on new therapies as an alternative for organ transplants. The goal is to cure the illnesses by restoring organs to their original function. Stem…

When moving to The Netherlands, it is important to know whether you are considered a resident tax payer or non-resident tax payer. Both residents and non-residents are taxed on their taxable income. A number of criteria help determine your status as resident or non-resident.

When moving to The Netherlands, it is important to know whether you are considered a resident tax payer or non-resident tax payer. Both residents and non-residents are taxed on their taxable income. A number of criteria help determine your status as resident or non-resident.

Health is a wonderful gift, both for humans and for society. If we are able to prevent both physical and mental illnesses, we can spare a lot of suffering and fight rising health costs. Social scientists and physicians in Leiden are working closely together to conduct research on the human mental, behavioural…

Bones contain information about people’s lives such as where they came from, their age at death and which diseases they suffered from. Researchers can deduce a lot from them about a person’s life and about human evolution. This generates leads that could help solve present-day problems, such as how…

The ability to create objects and structures with our hands has been essential to human development. This ability is something modern society is at risk of losing. Leiden archaeologists gather knowledge about ancient processes of ‘making and creating’ over the centuries, knowledge that helps our current…

The better teaching is for pupils and students, the more solid the basis will be that we give them for their future careers. This type of teaching requires strong instructors and insight into the best ways in which pupils can be supported, and research at Leiden University is making a contribution in…

If a society is to be secure, sustainable and resilient, conflicting interests must be reconciled. Researchers at Leiden University study the behaviour of individuals, groups and states in relation to this issue, and use their knowledge to promote equality within and between communities.

The central question is whether the current regime of international humanitarian law governing the conduct of hostilities in armed conflict is still adequate to deal with modern conflict scenarios, or whether it needs revision or amendment.

ILS organizes monthly Lunch Seminars in which all researchers from Leiden Law School can present their research. The idea is to share in an open and accessible way what researchers from other research programs and institutes are working on. During a seminar, two or three speakers will present their…

The ability to collect and interpret huge quantities of data has become indispensable to society and academia. Leiden University is a knowledge and expertise centre for data science that places the emphasis on interdisciplinary collaboration and innovation.

The worldwide race to the quantum computer is in full swing. This computer can take on computing tasks that we can only dream of today, such as finding proteins that can be used as medicines in seconds flat. Leiden physicists have discovered how the Majorana particle can be used as a building block…

Governance is a complex puzzle of organisations, people and divergent interests. Academic research in this field furthers our knowledge of the role of public administrators, of different organisational structures, of the people who work at such organisations and of how these organisations implement…

Astronomers want to understand the Universe, from the Big Bang to the present day, and what the future will hold. In Leiden they focus on two key questions: ‘How did stars and planets originate’ and ‘How were galaxies and black holes formed in the young Universe?’ A new generation of telescopes – just…

How can we organise society so as to keep our planet habitable for us and for all other life forms around us? To answer this question, Leiden researchers collaborate across disciplines, from biology to data science, and from environmental economy to archaeology.

The Faculty of Law has five institutes:

Plead

On 28 February and 1 March 2019, Stichting Bob Wessels Insolvency Law Collection (Foundation) held its first PhD Workshop on European and International Insolvency Law. The workshop attracted more than 25 applications from PhD students from all over Europe. At the workshop young researchers had a chance…

With cancer, a person’s body cells grow uncontrollably. Putting together a detailed picture of how this comes about makes it possible to develop efficient therapies. Researchers at the Leiden University Medical Centre (LUMC) and Leiden University are working together to gain a better understanding…

The transition to new and renewable energy sources should be completed by 2050. Researchers in various disciplines at Leiden University are conducting unique research that will help us make this transition and reduce CO2 emissions.