Purpose This paper aims to explain how the dynamics of inter-firm relations between small and large firms can, in the case of some behaviours, be interpreted as inter-organizational bullying. Design/methodology/approach This paper draws on a qualitative approach adopting the critical incident method to explore the subjective experiences of 13 individual managers and owners of small service businesses in dealing with the representatives/executives of the large corporations they serviced. The method facilitated an investigation of the significant occurrences identified by the small-firm respondents about the undue advantage taken by the large firms. This was found to be more than simple occasional opportunistic or unfair business practices perpetrated by representatives of the large firms but, instead, involved bullying. Findings The results revealed that large corporations actively, though covertly, sought to take advantage of their small service providers by resorting to bullying practices. Intimidation, opportunism, use of deceitful or unfair business practices, as well as abuse of power, were manifestations of inter-organizational bullying committed by the large and powerful corporations. The contrasting characteristics of size, access to resources, economic and market power were identified as strong impediments against building effective ethical relational exchanges between the large corporations and their small service providers. Research limitations/implications The study's findings provide valuable insights into the root causes and consequences of inter-organizational bullying. However, it is crucial to interpret these results in the context of this specific study. It is worth nothing that these findings primarily represent the self-perception of inter-organizational bullying among small service providers and may not capture other viewpoints or aspects of the industrial sector. Replicating this study in different sectors could enhance the generalizability of the conclusions drawn. Practical implications This analysis is valuable in understanding what constitutes the phenomenon referred to as inter-organizational bullying. It also assists to understand the conditions when large firms exhibit such behaviours and their implications on the well-being of relevant stakeholders. Social implications Firstly, the business partners should maintain a healthy relationship if they want to avoid incidents of bullying, which can harm the performance of the relationship. In doing so, they need to reduce the level of uncertainty in their business relationships through the transparent information exchange, formulating commonly agreeable contracts and enhancing communication procedures. They also need to put aside their self-interest, but rather strive for achieving results that will be beneficial to both parties. Originality/value This exploratory study offers a novel and unexplored way of theorizing inter-organizational bullying, as well as uncovering its antecedents and impacts on the welfare of small businesses, particularly small service providers.