Temporary agency workers are often portrayed as peripheral workers in organisations. Hence, they present a compelling illustration of the established-outsider theory of Elias and Scotson. According to this theory, differences in social cohesion, group charisma, and power of the members of subgroups within social entities can lead to an established-outsider figuration between these subgroups, which is maintained by processes of stigmatisation and exclusion. Applying a narrative approach, we focus on social relations between temporary agency and permanent workers along three routes. First, we show how and why social cohesion, group charisma, and power possession in the established group of permanent workers shape an established-outsider figuration. Second, we discuss how mechanisms such as stigmatisation and exclusion maintain this figuration. Third, we illustrate why temporary agency workers have the feeling of being stuck in their outsider situation. To accomplish our aims, we conducted in-depth interviews with temporary agency workers in Belgium. Our analyses are focused on temporary agency workers who encountered mainly negative experiences regarding temporary agency employment.