The study aims to discover the dynamic and processual nature of a supervisory relationship (here a leader–member exchange) through a novel, theoretical concept termed leader–member exchange breach, and by examining the characteristics of negative exchange interactions within the leader–member exchange relationship. The notion of the leader–member exchange breach is empirically defined through data on 336 responses to open-ended questions on negative interactions between leaders and subordinates, analyzed through qualitative analysis methods. The results of the study raise questions about the complexity of leader–member exchange relationships and show that breaches of the leader–member exchange relationship might lead to a reassessment of the dyadic relationship between leaders and their subordinates, spanning or even breaking the exchange relationships. This study extends current knowledge on leader–member exchange relationships by providing a viewpoint on the leader–member exchange breach that helps explain the processual and dynamic nature of those relationships through interpersonal interactions and exchanges.