The government wanted to show some muscle by making it compulsory to wear face masks in public indoor spaces as of 22.00 hours on 14 October. But it looks as though this will be 1 November after all. No need for that, tweeted Leiden professor of constitutional law Wim Voermans on 14 October, you can…

The principal aim of this research is to explore the confrontation between voice and electronics. These are often seen as being radically different from one another and many characteristics seem to be in opposition between them. However, they also have characteristics in common and they can influence…

Vinasse is a major by-product generated by the sugarcane biofuel industry. It is a source of microbes, nutrients and organic matter and often it is recycled as fertilizer.

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

Political scientists Joop van Holsteyn and Tom Louwerse (Leiden University) find that the Dutch government is having a hard time coping with referendum outcomes in general, and ‘anti-European’ sentiments among voters in particular.

Op 17 November 2020, Shuai Guo defended his thesis 'Recognition of Foreign Bank Resolution Actions'. The doctoral research was supervised by Prof. R.D. Vriesendorp and Prof. M. Haentjens.

Oxford University Press has published the edited volume based on the European Law Institute's (ELI) project 'Rescue of Business in Insolvency Law'. The project ran from 2013 to 2017 under the auspices of the ELI and was conducted by Bob Wessels and Stephan Madaus, who were assisted by Gert-Jan Boon.

Twelve researchers of our Law School have been awarded an ILS seed money grant. This grant enables researchers to create space for preparing a grant proposal for NWO, ERC or otherwise.

The Hazelhoff Centre for Financial Law offers the Dutch master Financial Law and the Advanced Master Law & Finance. Furthermore, they provide a course within the bachelor International Business Law and offer a wide variety of postgraduate education.

We work on projects commissioned by the European Commission, INSOL Europe and ELI (European Law Institute) as well as various other projects with an international scope. You can find our projects on the right. There have also been several important publications regarding TRI, also from our staff, that…

This project aims to link robot development and policymaking to reduce the complexity in robot legal compliance in the context of COVR.

Labour law is constantly changing. Concurrently, the laws dealing with workers address fundamental issues which are invariably of major significance and value. The research carried out at the Department of Labour Law and Social Security focusses on both the (constant) changes in labour law and social…

The institute hosts criminal lawyers and criminologists who engage in high-quality scientific research that is also relevant for society.

Loopholes in international tax legislation contribute to the misuse of tax rules by multinationals. Leiden University legal experts investigate how the complex national and international tax rules can be made more consistent in order to create a better tax system.

Successful innovation requires more than technological progress alone. Every new concept must first be firmly anchored into an existing context. At least this is the hypothesis of Dutch classicists, working together in the National Research School in Classical Studies OIKOS. They intend to test this…

Within a multidisciplinary research team, cooperation takes place on the following focus areas:

How do tax treaties have to be explained and implemented, and what role does the supranational regulatory process play in this? Which objectives are meant to be used in establishing tax regulations and to what extent are such legislative practices undertaken in a goal-oriented manner?.

Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.

Konstantinos Zoumpoulakis, Research Assistant at the Institute of Criminal Law & Criminology, has written a report on this conference

English The purpose of this research is to identify and examine the challenges faced by African States in the field of foreign investment with a view to contribute not only to the academic debate, but also to foster awareness and develop the capacities of these States with regard to the drafting, negotiation…

It’s not a regular occurrence at Leiden University: two professors giving their inaugural lecture on the same day. Berna Güroğlu and Ellen de Bruijn specialise in related disciplines: they both research the influence of social context on processes in the brain – Güroğlu in adolescents and De Bruijn…

Caribbean archaeological heritage is threatened by natural impacts but also increasingly by economic developments, often resulting from the tourist industry. The continuous construction of specific projects for tourists, accompanied by illegal practices such as looting and sand mining, have major impacts…

Promotores: Prof.dr. B.R. Katzy, Prof.dr. K. Sailer (Munich University)

How can we improve quality of life and study success in young, high-functioning adults with autism?

How are you doing in these strange and unprecedented times? This is the question we are asking our colleagues in this series of articles. This time we asked Erick van Zuylen, the University beadle. 'This year, I haven't been leading the PhD committee into and out of the chamber, wielding my beadle's…

PhD Defence

Wim Voermans, Professor of Constitutional and Administrative law, travelled to São Paolo, Brasilia and Rio de Janeiro from 14 to 18 March with a delegation from Leiden University with the aim of strengthening ties with Brazil. During the visit agreements were made on future academic collaboration and…

In this thesis, we use low-frequency and high-frequency radio observations to address the following questions regarding quasars: is the radio loud/quiet quasar dichotomy real?

How are health goals related to other valued personal goals?

This edited volume provides a synthesis on the question of business attitudes towards and its influence over the development of the modern welfare state. It gathers leading scholars in the field to offer both in-depth historical country case studies and comparative chapters that discuss contemporary…

This collection considers such issues as the cognitive, linguistic and emotional benefits of speaking two languages, the perceptions, attitudes and issues relating to identity in minority language areas, and the number of grammatical aspects amongst those who speak these minority languages.

View the program structure of the Advanced Master Air and Space Law on this webpage. The program gives you a thorough understanding of aviation and space law.

On 22 November 2018, Teico Sikkema defended his thesis 'Beginsel en begrip van verdeling'. The doctoral research was supervised by Prof. mr. W.G. Huijgen and Prof. dr. F. Sonneveldt.

Serhan Afacan defended his thesis on 23 June 2015

“JARAK: the commoditization of an alternative biofuel crop in Indonesia” was a research program from 2010-2014 in which researchers from Indonesia and the Netherlands collaborated.

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…

Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn

Do you like solving complex legal puzzles? Do you like analysing problems? If so, the bachelor’s programme Fiscaal Recht is right for you.

On 25 September 2019, Luuk Esser defended his thesis 'De strafbaarstelling van mensenhandel ontrafeld'. The doctoral research was supervised by Prof. C.P.M. Cleiren and Prof. J.M. ten Voorde.