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Problématique : Is the four-day week a model for the future of work, or a privilege available only to certain jobs?

Plan. I. The case for: when work is measured by results, shorter weeks can preserve output. Exemple : la semaine de cinq jours elle-même, adoptée par Henry Ford dans ses usines en 1926, présentée alors comme une mesure de productivité autant que de progrès social. II. The limits: where work is measured by presence, fewer days means more staff or longer shifts. Exemple : les soins, les commerces, les transports, où la continuité du service est l'objet même du travail. III. The real question is workload, not days. Exemple : la crainte du syndicat dans le document, et le débat plus large sur le droit à la déconnexion.

Introduction : The firm presents its four-day week as a success, and its figures seem to bear that out. But a single engineering firm is a rather special case. I would like to ask whether this experiment points to the future of work for everyone, or whether it is a privilege of jobs whose output can be measured. I will look first at the case for it, then at its limits.

Conclusion : On balance, the four-day week seems less a universal model than a sign of where work is heading for some. Extending it would mean rethinking how we measure work rather than simply cutting a day. Which raises a wider question: as productivity rises, should the gains go to wages, or to time?

Ce qui fait la note. La problématique oppose deux lectures ; les axes progressent ; l'exemple de Ford est historique et sûr, sans chiffre invérifié. L'introduction se dit en trente secondes et annonce le plan sans lourdeur ; la conclusion répond, puis ouvre.