This study aims to investigate the effect of organizational identification (OI) on green organizational behavior (GOB) and the mediating role of psychological well-being (PWB) in this relationship. To achieve this research goal, a quantitative study was conducted using a structured questionnaire designed to assess the relevant variables. Data was collected from 264 white-collar employees in the service sector in Istanbul. Surveys were collected from participants face-to-face, using a judgmental sampling method. Hypotheses were tested using AMOS22, SPSS 24 and PROCESS Macro. The significance of indirect effects was analyzed by employing the bootstrapping technique. The results indicate that OI has positive and significant direct effects on GOB and PWB. Furthermore, PWB was found to significantly predict GOB. The bootstrapping analysis revealed that the indirect effect was significant, supporting a partial mediation model. This research illustrates that OI increases GOB both directly and indirectly through PWB. The findings are considered to be of relevance to the literature because this is one of the few studies that addresses the concept of green organizational behavior, which is a focal point in the organizational behavior literature, and it emphasizes the importance of psychological resources in promoting environmentally friendly behaviors within organizations.