This study investigates the degree of congruence between employees' perceptions of company sustainability and their use of sustainable activities outside of work. A total of 217 participants from logistics enterprises in Istanbul completed a detailed questionnaire that assessed demographics, corporate social responsibility (CSR), pro-environmental behavior (PEB), and organizational identification. The findings show a robust relationship between CSR perception and PEB, confirming the idea that employees who see their employer as socially responsible are more inclined to take pro-environmental measures. Furthermore, organizational identification predicts PEB, demonstrating the importance of employee commitment to the business in generating sustainable habits. The mediation analysis also demonstrates that OI mediates the link between CSR and PEB, emphasizing its significance in influencing workers' sustainable actions. The report emphasizes the need of organizations improving their CSR programs and promoting organizational identification in order to raise sustainability practices both within and outside of the workplace. Limitations include the study's narrow emphasis on a single city and industry, which suggests opportunities for larger geographical and sectoral replication.