What Is Occupational Therapy (OT)? Definition, History and How It Works
What occupational therapy is in plain words: definitions, what 'occupation' means, who OT helps, its history, practice areas and how OT works.
Occupational therapy is a health profession concerned with how people function in their roles and how they perform activities. The profession focuses on the promotion, restoration and maintenance of productivity in people with a wide range of abilities and disabilities.
Occupational therapy definition
Definitions of occupational therapy have changed over the years. Early definitions emphasised occupation as a remedial activity to restore a person’s physical and mental health, and practice areas were limited. As the demand and scope of OT have grown, the definition has changed too.
| Source | Definition |
|---|---|
| American Occupational Therapy Association (AOTA), Occupational Therapy Practice Framework, 2020 | "The therapeutic use of everyday life occupations with persons, groups, or populations (i.e., the client) for the purpose of enhancing or enabling participation." |
| World Federation of Occupational Therapists (WFOT) | A client-centred health profession concerned with promoting health and well-being through occupation. Its primary goal is to enable people to participate in the activities of everyday life. |
| AOTA Uniform Terminology, 1994 | The use of purposeful activity or interventions designed to achieve functional outcomes which promote health, prevent injury or disability and which develop, improve, sustain or restore the highest possible level of independence of any individual who has an injury, illness, cognitive impairment, psychosocial dysfunction, mental illness, developmental or learning disability, or other disorder or condition. |
For a layperson, we would define occupational therapy like this:
Occupational therapy works with people with physical disabilities, learning disabilities, mental or psychological problems, and older people who need help adapting to the changes of ageing. An occupational therapist helps them regain their maximum function so they can pick up their lives again.
What does “occupation” mean?
The term occupational therapy can be confusing. It carries the misconception that the profession is about vocational counselling and job training. But occupation, as Webster’s Dictionary defines it, is “an activity in which one engages.” Occupational therapists promote skill development and independence in all daily activities.
| Age | Everyday occupations | Example of an OT goal |
|---|---|---|
| Child | Playing in the park with friends, washing hands, using the toilet, cutting with scissors, drawing, handwriting | Holds a pencil with a mature grasp to write their name |
| Adult | Self-care, homemaking, work, caring for children, driving, leisure | Returns to cooking for the family one-handed after a stroke |
| Older adult | Bathing safely, managing medication, gardening, staying socially connected | Showers independently using a tub bench and grab bars |
People sometimes confuse occupational therapists with other health professionals, such as physical therapists, recreational therapists, art therapists or vocational rehabilitation staff. OT shares some interests and treatment approaches with these professions, but its main focus is different. An occupational therapist may use art, music, crafts, activities and exercise during OT intervention, but the focus is always on achieving a therapeutic, functional goal. Read more: occupational therapy vs physical therapy.
Who does occupational therapy help?
The OT client base ranges from newborns to older adults with a wide range of physical, mental and psychosocial conditions. Occupational therapists work in outpatient clinics, hospitals, mental health centres, public and private schools, home health agencies and private practice. Occupational therapy assistants and occupational therapy aides support the occupational therapist. For a closer look at the job, see what does an occupational therapist do?
Occupational therapy history
- 1917
- The National Society for the Promotion of Occupational Therapy is founded in March in Clifton Springs, New York, by George Barton, William Rush Dunton Jr., Eleanor Clarke Slagle, Susan Cox Johnson, Thomas Kidner and Isabel Newton
- The US enters World War I; demand for rehabilitation grows fast
- 1921
- The society is renamed the American Occupational Therapy Association (AOTA)
- 1940s
- World War II gives OT great momentum, especially in physical dysfunction
- 1952
- The World Federation of Occupational Therapists (WFOT) is founded
- 1970s
- Health care growth and reimbursement take OT beyond hospitals into homes, public schools, mental health centres and workplaces
- 2010s–2020s
- OT's centennial in 2017; AOTA's Practice Framework, 4th edition (2020); growth of telehealth
The founders came from different backgrounds, but they shared a common belief in the therapeutic use of occupation. The history illustrates occupational therapy’s effort to advance the profession by showing it is a cost-effective, necessary service within the health system, while keeping a broad definition and wide areas of practice. Read more: OT month: ways to celebrate and promote occupational therapy.
The occupational therapy knowledge base
Occupational therapy treatment is based on occupational therapy frames of reference and models, which guide therapists in evaluation and treatment. OT planning revolves around three ideas: the person, their occupations and their environment.
Person
Body, mind, skills, motivation
Occupation
Self-care, work, play, leisure
Environment
Physical, social, cultural
Performance improves when the person, the occupation and the environment fit together. OTs can change any of the three.
Performance areas, components and contexts
In the classic terminology, occupational therapists focus mainly on performance areas:
- Activities of daily living
- Work and productive activities
- Play or leisure activities
OTs work on performance components to improve performance areas:
- Sensorimotor: sensory processing, range of motion, muscle strength, endurance, postural control
- Cognitive and cognitive integration: orientation, attention span, memory, sequencing, problem solving
- Psychosocial and psychological: interests, role performance, social interaction, coping skills
And they consider the performance context: the temporal context (age and stage of life), the physical environment (such as furniture and building layout), the social environment (social groups) and the cultural environment (customs and beliefs).
Occupational therapy practice areas
Occupational therapy plays an important role in many areas:
| Area | Common conditions | What OT does |
|---|---|---|
| Children and early intervention | ADHD, autism, cerebral palsy, Down syndrome, learning disability, sensory processing difficulties, developmental delay, genetic conditions | Play, fine and gross motor skills, sensory strategies, handwriting, self-care, school participation |
| Orthopaedic rehabilitation | Post-fracture stiffness, burns, arthritis, hand injuries, workplace injuries, amputation, joint replacement, back pain | Activities and exercise, splinting, physical agent modalities alongside purposeful activity, adaptive equipment |
| Neurological rehabilitation | Spinal cord injury, stroke and hemiplegia, traumatic brain injury, Alzheimer's disease, Parkinson's disease, multiple sclerosis | NDT, sensory approaches, constraint-induced movement therapy (CIMT), cognitive rehab, ADL retraining |
| Mental health | Anxiety, depression, PTSD, schizophrenia, bipolar disorder, OCD | Meaningful activity, relaxation, social skills training, groups, life skills, return to work |
| Older adults | Dementia, falls, frailty, low vision, arthritis | Transfers and mobility in daily tasks, home safety, adaptive equipment, leisure and social engagement |
| Palliative and hospice care | Terminal illness | Emotional support, energy conservation, comfort, and independence and self-confidence in daily living for as long as possible |
How occupational therapy works
-
Referral and screening
From a doctor, school, family or the person themselves.
-
Evaluation
Occupational profile, medical records, interview, observation, standardised and non-standardised tests.
-
Goals and plan
Short- and long-term goals with the client; frame of reference chosen.
-
Intervention
Remedial and compensatory activities, education and environmental change.
-
Re-evaluation and outcomes
Progress is reviewed regularly; discharge when goals are met.
Occupational therapy assessment
Assessment is the process of gathering data, identifying problems and making decisions about intervention. In occupational therapy, assessment of occupational performance areas and components is the basis for developing treatment strategies. An initial evaluation takes place before treatment, and re-evaluation happens periodically during treatment. The OT uses formal and informal screening and evaluation, including review of the medical record, interview, observation, standardised and non-standardised tests.
Occupational therapy treatment
Occupational therapy intervention is based on functional activities. An effective treatment plan is possible only after a thorough, careful assessment. The plan includes long- and short-term objectives and methods based on the identified problems. The occupational therapist selects one or more frames of reference or approaches to guide clinical reasoning. Three general approaches are:
| Approach | Best for | Examples |
|---|---|---|
| Biomechanical | Orthopaedic conditions with an intact central nervous system | Therapeutic exercise for range, strength and endurance; orthotics to prevent deformity or position joints; physical agent modalities as an adjunct (e.g. fluidotherapy before hand activities in post-fracture stiffness); functional activities such as sawing wood, rolling dough or vacuuming |
| Sensorimotor | Neurological conditions | Approaches based on theories of motor recovery and control, e.g. neurodevelopmental therapy (NDT), proprioceptive neuromuscular facilitation (PNF), Rood's approach, task-oriented training |
| Rehabilitative | People living with residual disability | Self-care training, assistive devices, work simplification and energy conservation, wheelchair management, workplace modification |
The occupational therapist combines these approaches according to the person’s needs. The general goal is to restore the person to their highest level of performance in life roles through remedial or compensatory approaches.
How to become an occupational therapist
In the US, occupational therapists need a master’s or doctoral degree from an accredited program, must pass the NBCOT certification exam and need a state licence. In many other countries, including India, a bachelor’s degree (BOT) is the entry-level qualification. The US Bureau of Labor Statistics reports a median pay of $100,330 for occupational therapists (May 2025), with employment projected to grow 15% from 2025 to 2035, much faster than average.
Summary
Occupational therapy provides evaluation, OT diagnosis, planning, intervention and re-evaluation. OTs work in many settings and with all age groups, but their main goal is always the same: helping people be as independent as possible in the occupations that matter to them. Frames of reference and approaches guide the therapist, and engaging people in purposeful activity is what sets OT’s knowledge base apart from other professions. We hope this article helps you understand “what is occupational therapy?”
Related guides: OT activities for stroke patients, Adaptive equipment for eating, Activities of daily living checklist.
Theory behind this: read OT frames of reference and OT models of practice (PEO, CMOP-E, MOHO, Kawa).
References
- American Occupational Therapy Association. Occupational Therapy Practice Framework: Domain and Process—Fourth Edition. American Journal of Occupational Therapy. 2020;74(Suppl 2).
- World Federation of Occupational Therapists. About occupational therapy.
- Pendleton HM, Schultz-Krohn W, eds. Pedretti’s Occupational Therapy: Practice Skills for Physical Dysfunction. Elsevier.
- Boyt Schell BA, Gillen G, eds. Willard and Spackman’s Occupational Therapy. Wolters Kluwer.
- Reed KL, Sanderson SN. Concepts of Occupational Therapy. 4th ed. Lippincott Williams & Wilkins.
- Punwar AJ, Peloquin SM. Occupational Therapy: Principles and Practice. 3rd ed. Lippincott Williams & Wilkins.
- US Bureau of Labor Statistics. Occupational Outlook Handbook: Occupational Therapists.
Frequently asked questions
What is occupational therapy in simple words?
What is the official definition of occupational therapy?
Who needs occupational therapy?
What is the difference between occupational therapy and physical therapy?
When did occupational therapy start?
Where do occupational therapists work?
Written by
Deepam Pawar, OT
Deepam Pawar is an occupational therapist and co-founder of Occupational Therapy OT. He focuses on clinical frameworks, assessment, and evidence-based practice.
All articles by Deepam →This article is for general education and is not a substitute for individualized assessment or treatment by a licensed occupational therapist. Always seek the guidance of a qualified professional for specific concerns.
