This article presents the evaluation of crew resource management (CRM) training specifically designed for employees within manufacturing industries. The central objective of this training program was to improve teamwork, communication, and stress management skills as well as to increase the workers' situational awareness of potential errors that can occur during the manufacturing process. Eighty employees, all of whom were working in a production unit for gearbox manufacturing, participated in the training program in this study. Effectiveness of the CRM training course was evaluated. The results showed a significant improvement in a wide range of CRM-relevant categories, especially in teamwork-related skills, in addition to an increase in the workers' situational awareness after the training program. When comparing the data regarding human error occurring in gear production that were derived from the trained group and a control group, mixed results were produced. Based on the results, it can be stated that CRM training, which was originally developed for the aviation industry, can be transferred to the manufacturing industry.