Work Hardening is a highly structured, goal-oriented, individualized intervention program designed to return the patient/client to work. It uses real or simulated work activities designed to restore physical, behavioral, and vocational functions. It is multidisciplinary in nature using physical therapist, occupational therapist, psychologist, and vocational specialist. It usually is daily and up to 8 weeks (chronic) or 20-25 visits up to 6 weeks (sub acute).