Anyone who comes into contact with Leiden University should be able to trust that we will act with integrity. The Code of Conduct on Integrity describes how we can work together to ensure that this is the case, whether in relation to research, interactions with students, purchasing or the use of University…

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…

At Leiden University, we expect our researchers and lecturers to share our ambition to become one of the best. This is the crux of our HR policy. Read more about our policy below. Also, you will find more information about temporary staff, staff participation, leadership and how we ensure our integr…

Security

Lecture

Conference

To be able to activate your LU-Card online, it is necessary that you confirm your identity. We use the ReadID Ready app for this. On this page you will see what you need to confirm your identity.

During a reorganisation, the University does its utmost to avoid redundancies, regardless of whether these relate to the University as a whole, to an institute or to a department of a faculty or service.

The confidential counsellor for research integrity is your first port of call for any questions or situations relating to research integrity, or if you have suspicions about a current or former employee of Leiden University. All your meetings with the confidential counsellor are confidential.

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 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.

Additional authentication ensures better security of identities and (personal) information within systems. More and more university systems are therefore using additional authentication, also called Multi-Factor Authentication (MFA).

Training

As a university employee, you probably work with personal data. That is not just names and telephone numbers – it can also include things like cookies. How can you make sure you are working in a privacy-proof way?

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

On this webpage, you will find more information about (types of) security, who to ask for advice and where to report incidents.

Within all bachelor’s and master’s programmes, depending on the type of programme, attention is paid to ensuring that academic research is carried out scrupulously. For each programme, this is done in a way that is appropriate for the discipline in question.

Research, Transferable skills

Old Observatory, Sterrenwachtlaan 11, 2311 GW, Leiden

Old Observatory, Sterrenwachtlaan 11, 2311 GW, Leiden

The integrity and reliability of academic research are of fundamental importance to the University. All parties, both within and outside the University, must be able to have confidence that our research is conducted in a scrupulous, fair, verifiable, impartial and independent manner.

Answers to the most common questions about Maileon

A fixed telephone is part of the standard equipment of your university workplace. A fixed telephone allows you to make phone calls to internal lines, mobile numbers and fixed numbers within the Netherlands. But it also offers other options. If you have any questions or if you wish to extend your telephone…

Diversity, Equity and Inclusion (DEI) can be an aspect of teaching and learning, an outcome to achieve and/or an atmosphere to create. On this page you can find out more information in terms of support and best practices.

Veelgestelde vragen privacy en security

Here you will find guidelines for using devices such as laptops, tablets, and telephones. Whether you are working with a device purchased for you by ISSC or with a device you have purchased privately, it is important that you save your files securely and handle confidential data with care.

Have you experienced or witnessed unacceptable or transgressive behaviour? This page gives information about what you can do yourself and which ‘helplines’ can assist you in this situation.

You can activate and manage your account via Account Services. To make the best use of Account Services, it is important that you set your account properly the first time you use it.

You can find information about making payments to research participants on this page.

Fraude en plagiaat

An ORCID iD is a unique code that identifies you as a scientist in a reliable and consistent way, much like the social security number in a passport. DOI does the same but for a scientific publication instead of a person. DOI and ORCID iD are examples of persistent identifiers.

Submitted invoices by 9 December 2025 at the latest, will probably be process and payed before the end of this year, as long as they meet the Leiden University guidelines and are approved in time by the budget holder.

If you have business contacts, you may at some point be offered a gift: a physical object or a service or advantage. What gifts can you accept without allowing your integrity to be called into question?

Bachelor, Master, Short Course, PhD

If your research project involves collecting private or otherwise sensitive data, you must ensure adequate data protection measures are taken. Research must be conducted in accordance with the General Data Protection Regulation (GDPR). In terms of patient data, for instance, when used for research carried…

Every member of staff at Leiden University is given a ULCN account. You can use this ULCN account to log in to your computer, the wifi network and various other ICT systems.