The aim of this study is to determine whether there is a relationship between prosocial behaviors and positive voice behavior and there is a moderating effect of leader-member exchange on the relationship between prosocial behavior and positive voice behavior. In this way, it will be determined whether leader-member exchange has an effect on teachers’ prosocial and positive voice behavior. The data of the research was collected from 720 teachers in 2019-2020 educational year from various primary, secondary, and high schools in Buca, İzmir. In this study, structural equation modelling (SEM) was used to test the moderating effect of leader-member exchange on the relationship between prosocial behaviors and positive voice behavior. The data were obtained through “Personal Information Form”, “Leader-member Exchange Scale”, “Prosocial Behaviors Scale”, “Positive Voice Behavior Scale”. This research has shown the moderating effect of leader-member exchange on the relationship between prosocial behaviors and positive voice behavior.