In the fast-changing business environment, the food service industry is suffering from a serious manpower shortage, leading to lower customer service quality levels, leading to customer dissatisfaction. In this reality, it is most important for members to engage in customer service with voluntary self-leadership and a sense of ownership. The purpose of this study is to find out the relationship between self-leadership, psychological ownership, and feedback-seeking behavior of humility, which is one of the influences of leaders on members of restaurant companies, and to show the moderating effect of team member exchange on feedback-seeking behavior and speech behavior. is to investigate. As a result of the study, leader humility had a positive effect on feedback- seeking behavior and Voice behavior. In this process, a significant relationship between a leader's humility and self-leadership was confirmed. However, it was found that the leader's humility had no significant effect on psychological ownership. It can be assumed that members show a positive attitude to exert influence on themselves through self-leadership managed and led by themselves, but feel burdened to have a sense of ownership that requires them to think and act from a managerial standpoint. This suggests that a new interpretation is needed. In addition, self-leadership had a mediating effect on the relationship between leader's humility and feedback-seeking behavior, but psychological ownership could not con-firm the mediating effect. This suggests practical implications and directions for follow- up studies. Finally, it was confirmed that the team member exchange relationship had a moderating effect on the relationship between feedback seeking behavior and speech behavior, but the hypothesis was rejected. This means that leaders should be aware that performance can vary depending on team relationships at the front line, and research at the organizational level is needed to strengthen the speech behavior of team members.