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…

If you cycle to work, you can use the University’s bicycle racks or lockable bicycle sheds; to use a lockable shed, however, you need a bicycle pass. At some locations you can also borrow a staff bicycle.

If you want to travel for work to an area with a security risk country or area with the color code orange and/or red, you need prior permission from the university.

Leiden University’s regulations are drawn up by various departments, such as Legal Affairs, Human Resources and the department of Health, Safety & Environment.

Research

Leiden University wants to give everybody the opportunity to work in the best circumstances.

What should we do about litter in the countryside? Can you tell from camera images if someone is guilty? And what does your heart rate really look like? Get answers to these questions and more at the free ‘Wijsneus Festival’ on Friday 16 September at Leidse Hout Park.

This website provides an overview of the organisational structure of Leiden University. Here you can find contact details of secretariats, staff lists by department, co-participation bodies, and regulations.

All persons making use of Leiden University buildings and grounds must comply with the general University house rules. These are listed in the Regulations on the Use of University Buildings, Grounds and Other Facilities, and are intended to guarantee order and safety for guests and staff alike.

Marjan van Dasselaar is the Staff Ombuds Officer. The Staff Ombuds Officer gives independent advice to the University on how the staff’s work environment can be made safer.

Organisation

This month, ten teachers received a Senior Qualification Education (SKO), including Marcellus Ubbink and Daan van der Es from our faculty. Why did they go through the process of getting qualified, and should all teachers have an SKO?

How can you ensure that your research hits the headlines? How can you bring your research output, such as PhD research or a publication, to the attention of the public?

Starting a partnership and signing an exchange agreement is just the first step in facilitating student and staff mobility. Staff and student exchange at Leiden University is administered by international coordinators at faculty and central level.

On this page, you will find more information about what you do as a mentoring coordinator and where you can find more information to help you perform your role as well as possible.

If you notice something you think may be unethical or illegal, you can discuss this in confidence with the confidential counsellor.

As staff, we can help every day to create a culture of dignity and respect, says HR specialist Bregje Speet. ‘It boils down to the question of how to treat each other normally. And what we consider normal to be.’

As an experiment, student Alicia Cai relied solely on AI tools such as ChatGPT and Claude for supervision while writing her thesis. What lessons were learned?

Organisation, Human resources

How satisfied are you with your work? And how can we improve? On Tuesday 6 May, our partner Welliba will invite you to take our 2025 Employee Experience Survey. We want your opinions on your workload, a respectful culture and more.

PhD candidate Joeri Schoenmakers works at the LIC and describes how his days revolve around new experiments, oxygen-free reactions and supervising students. The mix of freedom, variety and a close-knit team means he enjoys both his research and his teaching role every single day.

BrainTrain: an initiative from Leiden University in which a team of students visit high schools to make adolescents more resilient against disinformation on the news and on their socials. In an interactive two-hour guest lesson, high school pupils discover how easily their brains can be tricked into…

Many of us love music, but we don’t understand why exactly that is – or how our individual experiences of music can differ. Rebecca Schaefer will research this in the run-up to the SNAAR Festival in Utrecht. And in a unique way: students in vocational education (mbo) will be the researchers.

After many years of preparations, CERN has approved a groundbreaking new experiment: the Search for Hidden Particles (SHiP). Physicist Alexey Boyarsky was involved from the start. ‘We know there is physics that’s missing and we aim to find it.’

What will happen if the lights in a large part of the city are switched off? How many stars can you see without all that light pollution? This is what researchers, artists and the residents of Leiden are going to investigate during Seeing Stars Leiden on 25 September. ‘Leiden is the ideal place for…

More than half of our staff took our Employee Experience Survey last spring. We shared the initial findings at the start of July, and since then we’ve taken a closer look at the results and how best to act on them. For Vice-President of the Executive Board Timo Kos, the next steps are clear.

How do you study the growth of microorganisms, the spread of epidemic diseases or the healing of wounds, without actually performing experiments? Daoyi Wang, PhD candidate at the Mathematical Institute, worked on a specific mathematical model that can describe the growth of microorganisms and many other…

Human resources

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.

Would you like to request a training course for your team or meeting? Leiden University offers basic training courses suitable for all employees as well as specific training courses focused on the unique risks within your department or team.