Author(s): Fenika Wulani, Tuty LindawatiThis study investigated the interrelationship that holds between co-workers’ impression management, LMX and their interpersonal deviance as observed by fellow employees and the moderating effect fellow employee’s LMX have on the relationship between co-workers’ LMX and their interpersonal deviance towards fellow employees. Data were collected using a survey research design. Respondents included 202 employees who work in the service industry in Surabaya, Indonesia. Hypotheses were tested using SEM and multi-group analysis. This study found that coworkers’ impression management had a positive impact on their LMX and the relationship between coworkers’ LMX and their interpersonal deviance depended on their fellow employees’ LMX. This study focused on the relation among employees and provided a model that relate coworkers' behaviors-impression management and interpersonal deviance, as antecedents and consequences of their LMX, with how the similarity or difference of fellow employees’ LMX contributes to the coworkers' involvement in deviant behavior, as seen by fellow employees and in the context of a country with high power distance which is usually more receptive to impression management behavior.