This study empirically analyzed the difference in perception between the MZ generation and the older generation regarding organizational fairness and organizational performance of members in the organization, which has recently become an issue in the public office society. This study analyzed reliability analysis and exploratory factor analysis using the statistical package SPSS, based on the questionnaires of a total of 303 people. The results of the study are as follows. First, among the sub-variables of organizational fairness, distributive fairness and procedural fairness did not show a difference in perception between the MZ generation and the older generation, and the average was derived as statistically high for both groups. Second, interaction fairness, a sub-variable of organizational fairness, showed that there was a cognitive difference between the MZ generation and the older generation, and the average was derived to be statistically higher in the MZ generation than the older generation. Third, it was found that there was a cognitive difference between the MZ generation and the older generation in terms of work performance and administrative service quality, and the average was statistically higher in the older generation than in the MZ generation. This study suggests the need to implement policies without discrimination between generations when establishing and implementing personnel and organizational management policies for distribution fairness and procedural fairness, which do not show a difference in perception. The need for a differentiated approach between generations was implied when establishing and implementing personnel and organizational management policies for interaction fairness, work performance, and administrative service quality, which showed a difference in perception.