Occupational Functioning Model (OFM)

The Occupational Functioning Model (OFM) is a framework used in occupational therapy to guide assessment and intervention for individuals with physical dysfunction. It emphasizes the development of competence and satisfaction in the performance of tasks associated with valued life roles to support a sense of efficacy and control over one’s life. The model organizes functioning hierarchically, from roles, tasks, and activities to abilities, developed capacities, first-level capacities, and the underlying organic substrate. Successful occupational functioning is influenced by both the individual’s abilities and the presence of an enabling environment that supports their performance of meaningful activities.

The model distinguishes between occupation-as-end and occupation-as-means. Occupation-as-end refers to the ultimate goals that individuals aim to achieve, such as returning to work or resuming daily activities, while occupation-as-means involves the therapeutic use of purposeful and meaningful activities to develop underlying abilities or capacities  that support occupational performance. Competence, defined as the ability to perform the tasks associated with value roles satisfactorily, is linked to a sense of efficacy, or the belief in one’s capability to perform tasks, and control over one’s life. Increased competence may enhance one’s sense of efficacy and willingness to engage in occupational performance.

OFM also highlights the importance of life roles, categorized into self-maintenance, self-advancement, and self-enhancement. Satisfaction and competence in performing tasks associated with valued roles contributes significantly to well-being, while disruption of these roles may  negatively lead to occupational dysfunction. Assessment within OFM typically adopts a top-down approach, focusing on roles and meaningful activities while considering environmental influences. Common tools may include the Canadian Occupational Performance Measure, Role Checklist, and Barthel Index.

Intervention strategies may focus on the restoration of impaired abilities or capacities through occupation-based activities, adaptation of tasks or contexts, or direct practice of meaningful occupational activities. By aligning interventions with clients’ goals and real-life contexts, OFM guides interventions that promote clients’ competence and satisfaction in valued occupational roles.