Today, there are many important factors which enterprises should consider to innovate. When there is an organizational change, the employees' understanding of the change and individual readiness that measures the state of readiness are also important factors. Studies have been conducted focusing on the roles of leaders to make a change but for true innovation, all employees should prepare for changes. This study examined 9 domains focusing on the K Company to find out key factors in change readiness. In addition to key factors, this study suggested a plan for employees' effective change management activities by analyzing a perception gap in different positions by factors.