Abstract:The phenomenon of learning and innovation can be explained through activity theory (AT) and socio-technical theory (STT), with the Association International des Etudiants en Sciences Economiques et Commerciales (AIESEC) in Curitiba as the empirical field. This association offers a leadership training course to young university students. The methodology used was labour development research (LDR), which studies expansive and remediative learning. The results showed that AT enabled an explanation of the rise and construction of a historical perspective of the object. STT demonstrated the diffusion of innovation in local projects, from the formulation of expectations to summarisation.