In the current paper we have studied the impact of transformational leaders' empowering behaviours on their followers' willingness to express their opinions and ideas. Specifically, we hypothesized that the relationship between transformational leadership and employee voice is mediated by psychological empowerment and moderated by leader-leader exchange. In order to test this moderated-mediation model, we collected data from 253 respondents working in public and private sector organizations in Kingdom of Saudi Arabia. We analysed our study data through SEM and PROCESS. Our study results confirmed that leader-leader exchange moderated the positive relationship between transformational leadership and psychological empowerment. Moreover, we found that the relationship between transformational leadership was fully mediated by psychological empowerment. Our paper underlines the importance of transformational leader’s upward relationship with their superiors on their subordinate’s psychological empowerment and subsequent voice behavior. Finally, theoretical and managerial implication are discussed.