Purpose - The aim of this paper is to examine the impact of implementing Six Sigma system on job satisfaction and employee morale, and how job satisfaction, employee morale and Six Sigma implementation are to support each other. Design/methodology/approach - The paper builds a research framework which includes the variables of Six Sigma, job satisfaction, and employee morale. The research methodology is the use of a field survey questionnaire of a Taiwanese company. Findings - The paper finds that the method of Six Sigma implementation in Taiwanese company was by a top-down approach, where is the managers received the training and then were expected to pass on the relevant knowledge to their subordinates. It also reveals that one key issue in Six Sigma implementation is which organizational departments should first receive the Six Sigma training. the field study found that the first departments related to logistics management, and then onto production line departments. Implementing Six Sigma training has impact on organizational job satisfaction and employee morale. The performance of Six Sigma training was able to achieve job satisfaction and employee morale, but the employees who participated in Six Sigma training were more positive with regard to job satisfaction and employee morale. Originality/value - Every organization has their special characteristics in relation to the Six Sigma system, job satisfaction and employee morale. The organization should aim to better understand the relationship and content of job satisfaction and employee morale with regard to successful Six Sigma implementation.