Objectives: The purpose of this study was to apply participatory action-oriented training (PAOT) principle for the management of metabolicsyndrome and to assess its effectiveness in the workplace. Methods: The metabolic syndrome management program applying participatoryaction-oriented training (PAOT) principle is constructed action checklist, Group discussion, self-creation of an action plan, after 3 months,6 months, 1 year, the practice carried out check up and encourage practice activity. Results: The seventy-seven workers who participatedin the metabolic syndrome management program made a total of 246 action plans, 3.8 action plans per person and 234 action plans wereachieved after one year, so that 81.0% of action plans have been achieved. After 1 year, in the intervention group, systolic blood pressure(SBP) and diastolic blood pressure (DBP), body mass index (BMI), the risk factors score decreased statistically significant, and metabolicsyndrome prevalence decreased 54.8%. whereas the control group also showed a significant decreased in the mean systolic and diastolicblood pressure, the risk factors score. but, low-density lipoprotein (LDL) was significantly increased. Conclusions: To improve theeffectiveness of metabolic syndrome management program applying participatory action-oriented training (PAOT) principle, the need tocontinues implementing programs and analysis of the long-term effects are required. Participatory action-oriented training (PAOT) principlecan applying without cost and time, the human burden for the prevention and management of chronic diseases such as metabolic syndrome.