This research aims to measure the effect of leadership style on turnover intention of a private company in Indonesia mediated by job stress. Data collection was carried out by simple random sampling to 253 population. The returned and valid questionnaire results were 147 samples. Data processing was using SEM method with SmartPLS 3.0 software. The results of this research are leadership style has a negative and significant effect on job stress and turnover intention. Job stress has a positive and significant effect on turnover intention. Job stress was not a mediator for the relationship between leadership style and turnover intention. This novel research is proposing a model to manage turnover intention among employees of a private company in Indonesia through leadership practice with job stress management as mediation. This research can pave the way to improve teacher readiness in facing the industrial revolution 4.0.