This study of the conditions of developmental on-the-job training and learning for operators in highly automated industries is written in Swedish but contains an English abstract and 18-page summary. The summary begins with the study objectives, which were to determine the following: (1) conditions of developmental on-the-job learning in highly automated industry; (2) ways the conditions of developmental on-the-job learning are realized; and (3) the importance of vocational education, personnel training, and on-the-job learning to operators' vocational competence. Discussed next is the study methodology, which included case studies at 4 companies that involved interviews with 22 managers and union representatives and 40 operators, administration of a questionnaire completed by 145 operators, and observation of 15 operators. The study found that the conditions for developmental learning depend on the presence of the following: (1) challenging problems and wide degrees of freedom given to operators; (2) an integrated or informally open work organization that offers possibilities for participating in problem-solving; (3) a multitude of tools with multiple functions, both digital and analogue, manual and written; and (4) clear demands on knowledge and skills that can be applied and developed in day-to-day work. The bibliography contains 200 references, including 88 in English. Appended are three interview guides and five tables, all in Swedish. (MN)