Influence of Work Ethic and Principal Leadership Style on Teacher Performance Anisah 1 , S Marsyidin 2 , Ermita 3 , A Sabandi 4 , Rifma 5 , N Adi 6 , T A Ningrum 7 {anisah@fip.unp.ac.id} 1,2,3,4,5,6,7 Universitas Negeri Padang, Jl. Prof Dr. Hamka Air Tawar, Padang, Indonesia Abstract. Teacher performance is assessed annually. In this article, we find out the influence of work ethic and principal leadership style on teacher performance. The method used is a quantitative correlation. The research shows that: (1) work ethic has a direct effect on teacher performance, (2) Principal Leadership has a direct effect on teacher performance, (3) Work ethic through leadership influences teacher performance meaning the higher the work ethic of teachers and the more both the principal's leadership increases the teacher's performance in carrying out the task. Keyword : Influence, Leadership, Teachers. 1. Introduction Teacher performance is very important in the learning process [1] [2] [3]. However many problems are related to teacher performance. This is related to teaching and learning activities not in line with the specified time allocation. Some teachers carry out teaching and learning activities late a few minutes from the specified time and some of them also finish the teaching and learning activities before the time is up. In the implementation of learning, teachers tend to use teaching method of watching a media, without using a variety of teaching methods, and teachers tend to dictate learning materials and students are supposed to take notes. Many teachers do not have a lesson plan that should have been made before carrying out learning. They only make the lesson plan if it will be supervised by a supervisor or principal. Also, many teachers do not have a good work ethic. This can be seen by teachers who often interact with colleagues outside the classroom during the learning process. The phenomenon stated above shows that the work ethic of teachers is still low. If teacher performance is low then the educational goals will be difficult to achieve effectively and efficiently. Performance is influenced by several factors. One of them is leadership [4]. Then another factor influencing teacher performance is the work ethic [5]. To find out the relationship between these two variables and teacher performance then a study of the Influence of Work Ethic and Principal Leadership Style on Teacher Performance conducted. 2. Method This study uses a correlational research method to comprehend the influence between work ethic and the principal leadership style on teacher performance in Palembayan Junior High School, Agam Regency. The population as a subject of this study were 98 teachers at Palembayan Junior High School, Agam Regency. Sampling is conducted by simple random ICASI 2020, June 20, Medan, Indonesia Copyright © 2020 EAI DOI 10.4108/eai.20-6-2020.2300708