Washington Understanding Your Functional Capacity Evaluation (TWICE) is a comprehensive assessment that evaluates an individual’s physical, cognitive, and psychosocial abilities to perform work-related tasks. It provides an objective documentation of an individual’s capacity to perform work-related activities. The TWICE is used to assist in making decisions related to return to work, disability, and vocational rehabilitation. The TWICE consists of two parts: the Physical Capacity Evaluation (PCE) and the Functional Capacity Evaluation (FCE). The PCE evaluates an individual’s physical abilities and includes strength, flexibility, range of motion, and balance tests. The FCE evaluates an individual’s cognitive, psychosocial, and work-related abilities. It includes assessments of an individual’s concentrationproblem-solvingng, memory, communication, and time management skills. The TWICE incorporates the American Medical Association’s Impairment Rating Guidelines, which are used to determine an individual’s work limitations and permanent impairment ratings. The TWICE also incorporates the Washington State Department of Labor and Industries’ Ergonomic Guidelines which are used to assess an individual’s ability to perform job specific tasks. The TWICE is used by employers, disability and vocational rehabilitation specialists, and health care providers to determine an individual’s work capacity and make decisions regarding disability or return to work. It is also used to evaluate an individual’s vocational potential and assist in determining appropriate job accommodations.