Given the associations between job satisfaction and burnout, it is important to consider relations between job-related stress and sleep quality. Studies have consistently suggested that linkages between sleep problems and job-related stress are significant and have serious consequences on quality of life, work performance and motivation. Teaching is a stressful occupation, and to date possible influences of poor sleep quality on job burnout have received little attention. The aim of this study was to investigate predicting value of poor sleep quality on job burnout. Data were collected from 184 elementary school teachers. The Maschlack Burnout Inventory (MBI), Minnesota Satisfaction Questionnaire (MSQ), and Pittsburgh Sleep Quality Index (PSQI) were administered to volunteers. The linkage between poor sleep quality and job burnout was evaluated by using hierarchical regression analyses after controlling for demographical characteristics of subjects and job satisfaction. School climate, intrinsic job satisfaction, and sleep quality were significant determinants of burnout in school. Findings were discussed in the light of the theoretical considerations about job burnout.