A study was performed among design employees in three large companies to investigate the psychosocial effects of computer-aided design (CAD) work. The study included all technical employees of the departments selected, of whom about two-thirds worked with CAD systems. The results demonstrate that 90% of the CAD users have a positive attitude to CAD-work. No significant differences were found between CAD users and non-CAD users in terms of work load, autonomy, social support, job satisfaction, personal development, or degree of co-operation. Within the group of CAD users, those spending a larger number of weekly working hours with the CAD system reported lower work complexity, lower autonomy of work methods, and less job satisfaction. CAD users with a relatively higher number of years of CAD experience reported a greater work load, fewer CAD difficulties, and lower autonomy of work methods. Among draftspersons and designers, there were no significant differences in work activities between CAD users and non-CAD users.
