In this study, we developed, implemented, and examined the effect of workplace-based MetSprevention programs. The theoretical framework of the interventions was developed using the SEM,which comprehensively takes into account individual, organizational and environmental variablesthat affect one’s health behavior. We attempted three different intervention strategies. The results didnot show significant improvement in MetS indicators in Group 1 and Group 2, who both receiveda passive intervention dependent on voluntary participation. However, Group 3, who received theintensive intervention accomplished with the company’s systematic support and management, showeda statistically significant reduction between pre- and post-intervention WC and FG. Further, the MetSscore’s post-intervention means for both men and women significantly decreased. In sum, a tailoredand intensive WHPP, targeted at the at-risk population, based on active participation, and implementedwith the organization’s systematic support and management, was effective.