Objective: Purpose of this research is study of organizational justice and citizenship behavior relevancy and mediator role of job satisfaction in relationship between these two variables in one of the Shiraz factories workers. Methodology: In this research, 230 factory workers were selected by stratified random sampling method and Job description index, organizational justice and organizational citizenship behavior questionnaires were used. Data were analyzed by using of Pearson Correlation Coefficient and Multiple regression analysis methods. The results showed that: organizational justice and its dimensions has a positive and significant correlation with citizenship behavior and its dimensions. Results: Correlation Coefficient of organizational justice with citizenship behavior was (p < 0.0001, r = 0.52). organizational justice and its dimensions has a positive and significant correlation with job satisfaction and its dimensions. Correlation Coefficient of organizational justice with job satisfaction was (p < 0.0001, r = 0.67). Justice dimensions predict 0.25 variations in citizenship behavior. F value in p < 0.0001 level was significant. Justice dimensions can justify 50% of job satisfaction variations and distributive justice with a value of t = 7.003 and a significant level of 0.0001 has more predictive power than other justice types. Conclusion: Results of regression between job satisfaction and citizenship behavior analysis showed that satisfaction with supervision predict 0.19% of citizenship behavior variations, which reaches 0.23 by entrance of satisfaction with Income.
