Background and purpose: this study presents an integration of past research and theory that models the impact of the different levels of psychosocial stress and job performance. According to this model, the causal relationship between the different levels of psychosocial stress and job performance are considerable. Methods: The integrated model of this study was presented based on of past research and theory models. Data to test the proposed models were collected from bank employees. Different path models were developed and goodness-of- fit of models was evaluated. Correlation coefficient regression analysis by forward method and T-test was used to evaluate the relationship between variables. Alpha level less than 0.05 were considered significance. Results: The result of study suggested a positive and direct relationship between stress in "task level" and "socio-organizational level“with perceived stress of employees. Too, the negative and indirect relationship between scales "organizational culture" and "leadership style" from socio-organizational level with job performance was showed. Conclusion: The results of the relationship between psychosocial stress and job performance can be achieved more accurate by using the model in similar the population with the same demographic characteristics.