The manual offers a method of determining fitness for work, especially for the aging. Section 1, a 50-page Basic Manual for General Use, discusses the necessity of following each employee through his work life by a consistent method useful for preemployment, followup, return from illness, and promotion examinations. A seven-category scale, General physique, Upper extremities, Lower extremities, Hearing, Eyesight, Mentality, Personality (GULHEMP), is described for use both to organize and rate the data from a physical exam and to rate and profile the requirements of a specific job. The resulting criteria are helpful in decision making for the referral, placement, job transfer, promotions, and training of the older worker. A Work-Attitudes Scale is provided for cases where potential and performance differ widely. Five specific manuals comprise Section 2: (1) Grading by the GULHEMP Scale: An Explanation for Physicians; (2) Prognosis of Rate of Change in Fitness: For Medical Officers; (3) Assessment and Grading: Mentality and Personality: A Manual for Psychologists; (4) Achieving Minimum Acceptable Profits for Employment: For Personnel Staff and Senior Plant Physicians; (5) The Socioeconomic Study of the Employee: For Personnel Staff and Psychologists. (AJ)