Amid lengthening of working life, diversification of working styles, the need for workers to autonomously develop their careers is increasing. This study aimed to elucidate, the effects of career design workshops, and surveyed employees of company A. The main conclusions follow. First, the level of participant satisfaction had a positive influence on secondary effects (positive attitude, a willingness for development) via directly intended effects (self-understanding, company-understanding, recognized career goals). Second, the level of participant satisfaction had a positive influence on “Recognized career goals" via “Self-understanding". Third, though workshops were effective even for employees with a high degree of self-efficiency between organization, participant satisfaction did not lead to the effects for some of those employees.