This article studies first how the concept of activity has been taken into account by Economics and Business Adminstration throughout History till now. It analyses how the paradigm D (decision) - E (Exchange/Transaction) - R (Resources) replaced the paradigm A (Activity) - P (Production) - L (Learning). The comeback of Activity concept into recent research in Business Administration imposed by the strong comeback of Value concept, raises methodology and theory issues which must still be explored.
LORINO, P. (1999). Les notions d'activité et de valeur en économie et gestion. Performances Humaines & Techniques, pp. 49-57.