A study was undertaken to identify the training needs of full-time officers of trade unions in the United Kingdom. Data were collected through the following methods: individual interviews with senior officers of the Transport and General Workers' Union (TGWU) and other trade unions; a questionnaire mailed to every national, regional, and district officer of the TGWU; group interviews with new district officers attending a TGWU national course for officers; interviews with representatives of the TGWU Officers' National Committee; a literature search; and a content analysis of existing training and education provided for trade union officers. Based on the findings, a three-stage model for officer training was proposed. Stage 1 consists of preparatory measures, including formal commitment to training for officers, discussions between interview panels and officers, sessions to encourage more women candidates, national and regional preparation, and development of an officers' handbook. Stage 2 includes both regional and national induction. Regional induction consists of briefings on the role of the officer, introduction to district office procedures, a program of visits and observation, and introduction to the officer training program. National induction should be a mandatory 1-week residential course that covers the role of the officer, office management, law and tribunals, and communicating. Stage 3 consists of continuing education and updating and includes an assessment of training needs and general progress (after 9 months in post), attendance at national courses, and regional courses, and preretirement education. (Includes 32 references and appendices detailing current officer training and summarizing survey responses.) (CML)