Leiden University considers it important that possible wrongdoings within the organisation can be safely reported, and has therefore drawn up the Regulations on Reporting Malpractice. Reporting malpractice can be defined as the disclosure by an employee or student of Leiden University of suspicions of illegal or immoral practices that are taking place under the university's responsibility and in which an important interest of the general public or the institution is at stake. The regulation is in line with the Directive (EU) 2019/1937, on the protection of persons who report breaches of Union law, and the Dutch Whistleblowers Protection Act (Stb. 2023, 29) adopted as part of its implementation.

The purpose of these regulations is therefore to offer legal protection to the employees and students concerned and also to “any natural person who, in the context of his work-related activities, reports or discloses a suspicion of malpractice. Specifically, this means that individuals who perform activities for the university on another basis, such as self-employed persons, volunteers, interns, job applicants, contractors and suppliers, among others, may also report a suspicion of malpractice to the university. By doing so, the university wants to have the opportunity to seriously investigate a possible malpractice within the organisation.