Prediction of the Burnout based on Organizational Justice and Commitment whit an emphasis on Role mediating of Role Conflict and Ambiguity among the Staff of the Islamic Azad University of Shiraz.

the aim of this research is prediction of the burnout based on organizational justice and commitment whit an emphasis on role mediating of role conflict and ambiguity among the staff of the Islamic Azad University of Shiraz. the research is descriptive and correlational. Statistical society is contain of 320 employees of Islamic Azad University of Shiraz witch by random stratified sampling, 151 persons were selected samples. the Research instruments include inventories of burnout (Maslach, 2001), organizational commitment (Allen & Meyer, 2004), role conflict and ambiguity (Lu et al., 2001), and organizational justice (Colquitte, 2001). data analyzsis was done by using path analysis by help of LISREL software. to test of significant indirect paths, the Bootstrap procedure in the macro model of Preacher and Hayes (2008) was used. The results of this study showed organizational commitment has direct and significant negative effect on burnout (p<0/01). also organizational commitment has indirect and significant negative effect via role ambiguity and conflict on burnout (p<0/01). organizational justice has indirect and significant negative effect via role ambiguity and conflict on burnout (p<0/01). There is no direct significant effect between organizational justice and burnout (p<0/01). finally role ambiguity and role conflict (p<0/01) has positive direct significant effect on burnout. According to the fitted indices, the final model of the study has a relatively good fit.