Methods such as “teaching your replacement” were chosen, in a spirit of transforming work, for use in an activity clinic. These research-interventions spark dialogues on daily activities at work, and these can lead to professional controversies and become sources of transformation by supporting a renewed, conscious relationship between people and their work travail. These co-analysis methods sometimes butt up against the necessity, for the community of members of the profession, to open a wider dialogue on how work is organized in order to deal with obstacles that prevent people from doing their work. This sort of research-intervention was conducted with high school guidance counsellors (GC). Based on an analysis of the group actions developed during this research-intervention, our contribution identifies the clinical dynamic that leads to transformation both of the profession of GC and of how work is organized.