Mid-career is a time period when the knowledge and skills acquired during a collegiate education begin to approach obsolescence unless constantly renewed. Several studies had reported that peak performance of engineers and scientists occurs in the thirties and early forties. If these observations are correct, the updating process must be viewed as criticially important during the mid-career period. An educational model is presented for keeping up-to-date. It consists of both motivational and work environment variables. The principal motivational no-treatment approach for understanding professional updating is by the use of expectancy theory. The environmental variables consist of: organizational climate, supervisory-subordinate relationships, the job itself; peer interaction and company policy. (Author)