This study sought to establish the relationship between management participation and firm performance. The study was premised in the applauded significant role that management participation plays on firm performance. However, a glaring knowledge gap established from literature review indicate a paucity of empirical support to the extent of the relationship with both the financial and none financial performance. Firms in Export Processing Zones (EPZs) in Kenya were studied. Significant relationship was established only with internal business process performance. Theoretically, the study showed that management participation is a much more complex variable moderated by other factors. Therefore, managers ought to focus on moderating factors like culture and diversity to understand the relationship between management participation and performance.