Biological agents are micro-organisms such as bacteria, parasites, moulds, viruses and their waste products. This category also includes genetically modified variants (GMOs). These agents may form a risk for your health, which is why we apply a number of legal and other guidelines to prevent people…

Doing a PhD on the side? External PhD candidates, like Joost Van der Helm, just get on and ‘do it’. Besides his hectic job as a justice at the Court of Appeal in The Hague, Van der Helm managed to still find time to write a PhD dissertation.

Regardless of whether you work at a desk or in a lab, all workplaces have their risks. As your employer, the University aims to create a healthy workplace and to limit possible health risks. Here you will find the main risks and measures that we take to reduce them.

Regardless of whether you work at a desk or in a lab, all workplaces have their risks. As your employer, the University aims to create a healthy workplace and to limit possible health risks. Here you will find the main risks and measures that we take to reduce them.

Personal development

Who should you contact to set up, move or adjust your workplace?

Any loss of control over stored personal data is a potential data breach. Most cases involve stolen or lost digital files, but a stolen or lost printed list of personal data is also a data breach. It is important to report any data breach.

The importance of a healthy lifestyle does not receive the attention it deserves, as the coronavirus pandemic made painfully clear. Twelve behavioural scientists, including Professor Behavioral Interventions in Population Health Management Marieke Adriaanse and Professor of Health Psychology Andrea…

PhD defence

Together we create a healthy and safe working environment. Should an incident, dangerous situation or needle-stick injury nevertheless occur, please report it immediately. Such incidents are far more frequent than serious accidents. By reporting them we can make sure that they do not lead to serious…

Any loss of control over stored personal data constitutes a potential data leak. In most cases this concerns stolen (or lost) digital files, but a stolen (or mislaid) printed list containing personal data also represents a data leak. It is important that you report any data leak.

Lecture, Symposium

Pieter Tops holds the special chair in Organised and Subversive Crime Studies established and funded by the Police Academy.

Monica den Boer is professor by special appointment of Police Studies at the Institute of Security and Global Affairs. Monica currently holds the Chair on Military Policing Operations at the Netherlands Defence Academy in Breda, a position she has occupied since 2020. Previously, she served as a Member…

Saniye Çelik holds the position of Special Professor of Diversity and Inclusion at the Police, affiliated with the National Police. Her research interests encompass leadership and culture, creating safe and inclusive teams, personnel recruitment and retention, and fostering connections between public…

Merel Sprenger is a postdoctoral researcher at the Institute of Security and Global Affairs (ISGA), studying femicide in the Netherlands by linking data from the Dutch Femicide Monitor with CBS microdata.

Information related to AI in teaching and assessment can be found under various themes on the ECOLe website.

Leiden University has policies in place regarding travel restrictions for students and staff within the context of their studies, work or research. The basis of these restrictions are the Dutch Ministry of Foreign Affairs travel advisories.

Research, Didactics, Career development

Research, Transferable skills

Research, Transferable skills

Leiden University is committed to making your work safe, healthy and enjoyable.

More and more people are experiencing work pressure due to digital means of communication. Media like e-mail and Signal (WhatsApp) ensure that we can be reached day and night, which can cause an increased sense of work pressure and always being 'on call'. In February 2023, the new digital communication…

Determine how you keep track of the final version and intermediate versions.

Taking care of storing your data and making timely backups is a crucial step of good research data management practices because it is not possible to archive something that has been lost.

The Privacy Service Point is responsible for the application of and compliance with privacy legislation.

Marieke Liem is professor of Security and Interventions at Leiden University, where she and her team coordinate the European Homicide Monitor. A graduate of University of Cambridge in the U.K., Marieke Liem completed her PhD in Forensic Psychology from Utrecht University, the Netherlands. Before joining…

‘Een goed gesprek begint met iemand écht zien.’ (A good conversation starts with truly seeing someone). That text is written on a plaque that was screwed onto a IK Z1E J3 (I see you) bench on the Wijnhaven Rooftop Garden on Monday morning. The bench acts as a symbol to create room for discussions about…

Finland reduced its suicide rate from 30 deaths per 100,000 citizens. Marieke Liem and Leah Prencipe discuss this in The Conversation.

If you’re experiencing too much work pressure, talk about it to your colleagues and your manager. This is the only way we can jointly work towards a solution. How do you raise the issue of work pressure? And what can you do to prevent work pressure from getting out of hand?

Practical information and tips for hosting an assessment, including registration procedures, permitted aids, fraud prevention, surveillance and facilities for students with disabilities.

Fraud and plagiarism in assessment can unfortunately be seen everywhere, even among our students. In relation to this, as an examiner you have an important role in safeguarding academic integrity.

The University does its best to create a pleasant work environment. It may nevertheless happen that you are unable to work due to a short-term or long-term illness or disability. The University doctors will help you reduce health risks and advise you through your recovery and return to work.

Ans is the university's assessment software. With assistance from ECOLe, you can easily set up digital exams.

Leiden University is committed to creating a pleasant working environment for its staff. It may nevertheless happen that you find yourself unable to work due to a temporary or long-term illness or disability. The university doctors can help you reduce health risks and give you advice regarding your…

For the academic year 2025-2026, nine (teams of) teachers will receive a Grassroots or Grass shoots grant. Here you can read about their projects.

Leiden University is committed to creating a pleasant working environment for its staff. It may nevertheless happen that you find yourself unable to work due to a temporary or long-term illness or disability. The university doctors can help you reduce health risks and give you advice regarding your…

Christof Nägel is an Assistant Professor in the Violence and Violence Prevention research group at Leiden University. He is a sociologist by training and previously held teaching and research positions at the University of Cologne, Utrecht University, and the German Police University in Münster.

Nienke de Groes is a PhD candidate at the Institute of Security and Global Affairs, Leiden University.

Paul Nieuwbeerta is full Professor of Criminology at the Institute of Criminal Law and Criminology of Leiden University since 2009.