The aim of this study is to determine the effect of school administrators' decision-making behaviors on job stress. The research also tried to determine the mediating role of procrastination tendencies in the relationship between school administrators' decision-making behaviors and job stress. This research is descriptive research in cross-sectional study. In the research, a screening study was conducted to determine the decision-making behaviors, procrastination tendencies and stress levels of school administrators. The population of the research consists of school administrators working in public schools in the province of Malatya in the 2021-2022 academic year. 251 school administrators voluntarily participated in the study. The sample was determined by the disproportionate sampling method, which is one of the random sampling methods. SPSS 22.0 and AMOS programs were used in the analysis of the data obtained within the scope of the research. According to the results of the research, it can be said that the decision-avoidance behaviors and procrastination tendencies of the school administrators participating in the research are at a low level, and their work stress is at a moderate level. There was a moderate positive and negative relationship between school administrators' decision avoidance behavior and procrastination behavior, and a low negative relationship between decision avoidance behavior and job stress. When the structural equation modeling values consisting of decision avoidance, procrastination and job stress variables are examined, it is seen that school administrators' decision avoidance behaviors have a significant positive effect on procrastination tendencies. It has been determined that procrastination tendencies, which are one of the mediating variables, affect job stress negatively. With the inclusion of procrastination tendencies, one of the mediating variables, in the model, it was determined that the effect of decision avoidance behaviors on job stress was insignificant.