Although the imperical studies about voice endorsement is increasing, but the outcome variables of the voice endorsement are still being ignored to a large extent. According to the relative deprivation theory, this study found that the low voice endorsement have a negative effect which boost the employees sense of relative deprivation, including the horizontal and longitudinal compares with other persons or groups, and relative deprivation promote the cyberloafing behavior of employees. Moreover, the indirect effects of relative deprivation on the relationship between voice endorsement and cyberloafing behavior are stronger when employees score high on perceived over qualification. These results fill the gap in the voice endorsement researching area and provide a suggestions for leaders to reduce subordinates deviation behaviors in the perspective of psychological feelings.