The agro-ecological transition requires farmers to redesign their work system. To support farmers’ change towards agroecology, we develop an ergonomics “enabling intervention” in a change management context to help them in the development of them design activity. By allowing farmers to reflect on their trajectories and their project regarding agroecology transition, our research-intervention aims at enhancing the farmers’ capacity to design their work systems. Also, this research-intervention aims at equipping agricultural change management facilitators - who are not ergonomists - (e.g. farmers’ advisors) with tool designed to embed the farmers’ work in their counselling approach. These pursued goals require to design approaches, particularly tools, positioning farmers as work system designers. This is what we are trying to do in this research-intervention.