This Practice Note outlines the employment tribunal’s powers under Rule 33 of the Employment Tribunal Procedure Rules 2024 (ET Rules 2024), SI 2024/1155 to order the disclosure of documents and information. It considers the interaction with the Civil Procedure Rules (CPR) and addresses the meaning and scope of disclosure and inspection, the applicable test for disclosure, the overriding objective and proportionality. It also covers standard and specific disclosure, confidentiality, public interest immunity, oppressive disclosure, medical reports, and legal professional privilege (including legal advice privilege, litigation privilege, the iniquity exception and waiver). The Note further examines procedural requirements, including disclosure statements, pre-action disclosure, and disclosure by non-parties, together with restrictions on the use of disclosed material. It concludes with consideration of the role of artificial intelligence (AI) in the disclosure process. Documents of one kind or another will form a significant part of the evidence in many employment tribunal cases. There is need for fair disclosure of them in the interests of justice. Many relevant documents will be in the possession of one party; for example, medical