The aim of this study was to analyze the relationship between two types of interpersonal conflict
at work (relationship and task conflict) and job satisfaction in the context of small business, focusing
on the buffering role that different sources of social support (supervisors and co-workers) may play in this
relationship. Adopting such a contingent perspective our main findings show that, first, supervisor support
buffers the link between relationship conflict and job satisfaction while co-worker support moderates the
link between task conflict and job satisfaction, and second, that the model estimating the influence of
supervisor support and relationship conflict is relatively more important for predicting employees’ job satisfaction
than the model that relates co-worker support and task conflict. Our study makes a few contributions
to research on small businesses and interpersonal conflict at work, two streams that traditionally have
been developed separately, and finally highlight important practical implications for the field of Human
Resource Management.