What motivates public employees to carry out public services more likely? How can leadership style affect the motivation of public employees? Existing administrative literature identifies Public Service Motivation (PSM) as a factor which makes public employees more willing to serve citizens and society’s stability and development voluntarily. Scholars argue that different types of leadership may heighten or dampen PSM in employees, transformational leadership which directs and advises each of the members of an organization, promotes the PSM, whereas transactional leadership focuses on the cost effectiveness of employees and discourages intrinsic motivation. Therefore, we anticipate that the type of leadership provided by the leaders (suppliers) in the public sector will impact the PSM of members with hierarchical culture in Korean public organizations (consumers). This study identifies leadership types and their effects on organizational PSM, and communication in public sector. We analyze the relationship between PSM, leadership, and communication within the organization, utilizing the Public Employee Perception Survey Data of 2020.