The human-factors literature also emphasized the need to assess on anindividual basis the consequences of aging for a continued person–environment fit. Individualized strategies and interventions were suggested for the accommodation of age-related loss in ability, for deferring age-related declines in job skills, for the rehabilitation of lost physical or cognitive capacities, for avoiding occupational obsolescence, and for revising career strategies. A key element here, however, is that both the individual employee and the employer will need to assume responsibility for their part of the process. Aging employees must work on remaining fit and on developing new skills, and employers must continue to think about productive accommodation of valued employees