OJ is the justice perception of employees regarding the fairness in procedures which are defined by the organization and the fairness in distribution of organizational resources like promotion and payments. Studies have shown that employees who will perceive the fairness in justice system of the organization will be more committed compared to others and their commitment in response develops citizenship behaviors amongst them. This study in hand was conducted to specify the impact of OJ on OCB in different industry and culture i.e. educational sector of KPK working under Workers Welfare Board (WWB) Government of Khyber Pakhtunkhwa. Moreover, the study also has taken employees commitment as the mediator on the relationship between OJ and OCB. The hypothesized relationship of these variables was measured with three different adapted questionnaires. Data was collected by distributing 300 questionnaires to the respondents who were selected on convenience sampling technique. After collection of data it was entered into SPSS and reliability, validity tests of the tool were conducted. On successful completion of these tests, correlation and regression were run on the data so that the effect and relation of variables can be analyzed. The outcome was consistent with previous research and revealed the fact that the relationship among independent (OJ) and dependent (OCB) variable was significant and this relationship was partially mediated by the mediator (OC) taken in the study. The study has significant outcomes and the management of WWB could utilize the findings of this study in order to bring more transparency in their procedures and distribution channels of organizational resources in order to build more committed workforce rather than a crowd of employees.