The Work Performance Assessment (WPA) is a brief work simulation designed to evaluate job maintenance skills, emphasizing work-related social/interpersonal skills rather than specific vocational skills. The WPA uses three work samples involving sorting of food service items to measure 19 common work demands in four categories: responding to supervision, completing job tasks, cooperating with other workers, and socializing on the job. The 19 demands are presented by a supervisor to 2 trainees and require 1 hour to administer. The WPA may be scored by completing either: (1) an 83-item behavior rating form which calculates the proportion of behavioral criteria demonstrated in responding to the 19 work demands; or (2) the Work Personality Profile which provides a profile of employability strengths and limitations on 58 behaviors. The manual includes results of reliability/validity studies, the WPA script and rating form, a work break rating form, and 21 references. (JDD)