As a result of working in a stressful working environment, people commonly face "burnout". Burnout refers to negative consequences associated with chronic job stress and it likely occurs in anyone who works with people in some capacity. Hence, it would be fair to say that burnout is not a phenomenon associated exclusively with any particular human service population (Buck: 2006). As they deal with teaching to students and organizing a relationship with the administration and many other issues all of which are related to human service and relation, teachers present one of the top 5 most stressful careers in the world (Coombe: 2008). As a result of the stressful work they do, teachers commonly face "burnout". Teacher burnout is an issue to be taken into consideration as it affects learners as well as teachers. In order to obtain a more stress free environment and save both the learners and the teachers from psychological and physical effects of burnout, the issue of burnout is going to be studied in this paper. This study aims to give the definition, historical background and the sources of burnout as well as the harms of burnout period on ELT teachers and ways to avoid from teacher burnout. (C) 2013 The Authors. Published by Elsevier Ltd.