This study aims to investigate the burnout levels of English language instructors who are currently teaching at School of Foreign Languages, namely Konya Necmettin Erbakan University, Selçuk University and Gazi University, to look for the factors leading to burnout and to see if there is a relationship between their burnout levels and teaching experience. The study has a mixed method design. Maslach Burnout Inventory Educators Survey (MBI/Maslach & Jackson, 1981/Maslach, Jackson & Leiter, 1996) was administered to 70 English language instructors and semi-structured interviews were conducted with 30 of them. The results showed that burnout existed among instructors at varying levels. Although not supported by ANOVA results, there is an inclination of higher burnout levels at younger ages and in less experienced groups. As a result of the analysis of the qualitative data, gathered with semi-structured interviews, it was found that academic factors such as hours of teaching, proficiency levels of students, and the offices the instructors are working at, such as testing, materials, and teacher development are important in the emergence of burnout among instructors.