Different antecedents have been identified for organizational citizenship behavior in the literature including job satisfaction, perceived equity or fairness, task scope, positive and negative affectivity and organizational commitment. Workplace spirituality appears to be an antecedent of organizational citizenship behavior too. Assessment of the role of workplace spirituality in encouraging organizational citizenship behaviors is the primary focus of this paper. The data used in this study consist of questionnaire responses from employees in Shahid Ghandi Co. in Yazd. A total of 250 questionnaires were sent out and 210 valid responses were received. In this study Structural Equation Modeling was employed to determine the relationship between Workplace Spirituality and OCB. We concluded that workplace spirituality can foster organizational citizenship behaviors. Of the five dimensions of organizational citizenship behaviors, Altruism and Courtesy were more affected by workplace spirituality.