This research investigates the impact of Workplace Ostracism on organizational envy, with Workplace rumors serving as a mediating variable. The research employed a quantitative, correlational approach. The population of this study consisted of all employees at the second health center in Mashhad, totaling 666 individuals. A simple random sampling method was used to select a sample size of 244 participants, determined using Morgan's table. The instruments for measuring Workplace Ostracism, organizational envy, and negative Workplace rumors were the questionnaires developed by Ferris et al. (2008), Velizadeh and Azerbaijan (2013), and Spoelma (2021), respectively. The validity of the research variables was assessed through confirmatory factor analysis. The reliability of the research variables, as indicated by Cronbach's alpha, was 0. 813 for Workplace Ostracism, 0. 792 for organizational envy, and 0. 840 for negative Workplace rumors, demonstrating the reliability of the research instrument. The findings of the study revealed that Workplace Ostracism can significantly influence organizational envy, and negative rumors can exacerbate this impact. When individuals feel ostracized in the Workplace, these feelings can lead to decreased self-esteem, psychological distress, and even counterproductive behaviors. One common coping mechanism is engaging in negative rumors about others, which can negatively affect interpersonal relationships, productivity, and overall organizational performance.