This study investigated unstable working conditions of stable teachers in Gedeo zone, SNNPR. It also addressed contributing factors and possible mechanisms to overcome the problem as well as possible solutions. This study employed sequential explanatory model of mixed research approach which accommodates quant-qual method to collect and analyze data. Four woredas and two town administration areas were in focus of the study. Then, the data were collected from a total of 306 study participants (300 teachers and 6 school directors) using developed questionnaires and interview guides. Finally, the study concluded that primary and secondary schools in Gedeo Zone are facing frequent turnover of their teachers which is resulted by unstable working conditions. As it was found in the study, inadequate benefit package, low social status given to teachers by the society, poor working condition, poor administrative support, students' character and disciplinary problem, lack of opportunity for professional development are the prominent unstable conditions that this study has identified as a major results for turnover of teachers in primary and secondary schools of Gedeo Zone. This problem reduces the overall effectiveness of the schools which leads to the hindering of quality learning. Implications were suggested based on the findings.