In the context of education, teachers have an important role in achieving educational goals. To carry out an effective learning process the teacher is not only guided by teacher professional ethics but also on work ethics that are in accordance with the religion he adheres to. The purpose of this study was to determine the relationship between Islamic work ethics and transformational leadership on employee performance mediated by employee attachments. In this study the author uses a control variable, namely work experience as an amplifier for teacher performance. The object of this study was a school in Wonosobo, while the subject of this study was a teacher. This study uses a purposive sampling technique. The sample from this study were 134 respondents. Data is taken from distribution directly to schools. Data analysis techniques using SEM with AMOS software version 24. The results of this study are that Islamic work ethic has a significant effect on employee engagement, The effect of Transformational Leadership has a significant effect on Employee Engagement, The effect of Employee Engagement has a significant effect on Employee Performance, The effect of Islamic Work Ethic has a significant effect on Employee Performance, The effect of Transformational Leadership does not have a significant effect on Employee Performance.