Nurses are sometimes called on to appear before an employment tribunal, to give evidence for a colleague, their employer, or to testify in a case they have brought against an employer, such as for discrimination or unfair, wrongful or constructive dismissal. It can be a daunting prospect. This article aims to demystify the process and spell out what to expect. It explains a nurse’s obligations as a witness, including in relation to clinical notes and documentation, honesty and candour. It also describes tribunal processes and where to seek support in your role as a witness.