Introduction: Organizational trauma theory is perhaps one of the newest theories in organizational behavior and management fields, which is aimed to investigate the psychological and physical side effects of organizational trauma for individual and group in an organization. The aim of this study was to investigate the effects of organizational trauma on the skills of employees working in Khatam Alanbia Hospital, Tehran, Iran. Materials and Methods: PLS and Organizational trauma questionnaires were used. The effects of this trauma on different skills of hospital staffs were investigated. Results: Our data revealed a significant correlation between organizational trauma and staff skills in different dimensions. Conclusions: Organizational trauma can reduce employee skills in workplace. If this trauma lasts for a long period, it can affect organizational productivity.