If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this paper is to investigate the relationships among role stressors, social support, and employee deviance. Specifically, this study explores the relationships of role stressors (i.e. role conflict, role ambiguity, and role overload) to interpersonal and organisational employee deviance. Furthermore, this study examines the moderating role of social support (from supervisors and coworkers) on the above relationships. Design/methodology/approach -Data were collected from 326 paired samples of sales and customer service employees as well as their immediate supervisors in Taiwan. Findings -Role conflict had a positive relationship with both organisational and interpersonal deviance. Role ambiguity was positively, while role overload was negatively related to organisational deviance, respectively. Role ambiguity was more strongly related to organisational than to interpersonal deviance. Coworker support had a significant moderating effect on the role overloadinterpersonal deviance relationship. Practical implications -Organisations may implement policies and programs, such as clarification of job responsibility, provision of performance feedback and training in stress coping techniques, to lessen the negative effect of role conflict, and role ambiguity on employee deviance. Originality/value -This study contributes to the literature in several ways. First, this study extends prior research on stressor-performance relationship by investigating the effect of role stressors on two forms of employee deviance (interpersonal deviance and organisational deviance) in a collectivist cultural context (i.e. Taiwan). Second, this study demonstrates that work-related characteristics (e.g. role stressors) have different degrees of effect on interpersonal and organisational deviance. Third, this research offers explanations on why there is little support for the moderating effect of social support on the stressor-deviance relationship.