The findings of prior studies suggest that employees are likely to engage in deviant behavior in the workplace when they perceive organizational injustice. Given that employees’ perceived organizational injustice leads to workplace deviant behavior (WDB), a manager’s leadership has significant implications for reducing WDB because leadership has been considered the process of influencing people to change their attitudes, behaviors, and beliefs towards organizational goals. Therefore, it is hypothesized that a manager’s leadership may change the strength of the linear relationship between employees’ perceived organizational injustice and WDB. The purpose of this study is to examine the moderating effects of transformational leader behaviors on the organizational injustice and employee WDB relationship in the foodservice industry.