Employees regulate their behavior according to their perception of that of managers.
Besides, understanding the nature of employees’ perception of managers’ behavior is an unmatched source for the latter because it can help them improve their behavior. This study was conducted with the aim of exploring and understanding the behavioral components of managers that can amplify extra role behaviors of social workers in Imam Khomeini Relief Foundation using the phenomenological strategy and Colaizzi method. To achieve qualitative data, purposive sampling was used. The data were obtained through semi-structured interviews with 31 social workers to achieve theoretical saturation and were analyzed by using the Colaizzi seven-step method. Finally, nine themes were extracted among which the manager's supporting behavior had a higher priority than other themes. In order to validate qualitative data in addition to the final stage of Colaizzi method, Guba and Lincoln criteria methods were also implemented. Apart from the recognized themes, it was found that people are not impressed only by their managers' positive behavior, but sometimes they show extra role behaviors through their own self-management or their ideals and beliefs. Our findings in this study contribute to the development and implementation of management improvement programs. They can also help to increase job performance and extra role behaviors of social workers in connection with the clients of Imam Khomeini Relief Foundation.