This dictionary provides up-to-date definitions of the terms used in the related fields of occupational science and occupational therapy. Entries cover a broad range of topics from activities of daily living and autonomy to task-oriented approach and work-life balance and have a clear occupational focus. They provide an overview of the complex nature of human occupation and the impact of illness, injury, social exclusion, marginalization, or transition, for example, on occupation and well-being. Descriptions and analysis are backed up by key theories from related areas such as anthropology, sociology, and medicine.