Psychological contract is non-physical agreement is in addition to economic agreements on wages and working conditions. Employees assure to work, and loyalty with this non-physical treaty and they expect safety, respectful relationship, better status. The definition of trust weaved in this research is the willingness of a party to be defenseless to the actions of another party relied on the expectation that the other will perform a particular action important to the trustor, irrespective of the ability to show or control that other party (Mayer, Davis ve Schoorman, 1995; Schoorman, ve Davis, 2007). The aim of this study is to determine the public employees working in Eskisehir the effect on trust to organization and their psychological contract violation. In this study, approximately 120 public employees working in Eskisehir survey be conducted. In this study, survey questions will emanate psychological contract violation scale made by Robinson and Rousseau (1994), organizational trust scale is Nyhan and Marlow (1997). According to the results found that the trust of the employees and the administrators decreases when the employees have violated the psychological contract.