The Rise of the Conjuncturists: Building Economic Expertise on the Fall of the Popular Front

This article traces the emergence of a new type of economist in interwar France—the conjuncturist—through a study focusing on Alfred Sauvy and Robert Marjolin. We argue that these neglected figures helped to shape a new, autonomous, field of expertise that consisted of diagnosing and forecasting the economic situation to guide public decision making. As we show, the history of the conjuncturists is closely linked to that of the Popular Front in general, and to its emblematic law on the forty-hour week in particular. By becoming the most vocal opponents of this law, the conjuncturists fomented an open mutiny against the very government that had given them their first prominent position, in order to obtain the repeal of the forty-hour week, which Sauvy achieved in November 1938. Although the Popular Front was by then a thing of the past, and a future war with Germany had become the most likely outcome, the figure of the conjuncturist had succeeded in firmly occupying the institutional landscape of 1940s France—a form of economic expertise that was henceforth inseparable from political activity itself.