Although human resources could be regarded as the best competitive advantage of some organizations today and human beings are now more important than ever, they could sometimes be the main obstacle against organizations. This paper tends to study anti-citizenship behavior (ACB) and examine stress as a contextual factor, injustice and culture as organizational factors and personality as an individual factor affecting ACB. The more ACBs the employees show, the more organization's performance is affected and its image is deteriorated. A total of 243 employees of a private institution filled out a questionnaire in order to test the proposed research model. Results show that among the above mentioned factors injustice has the most effect on ACB