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Durée du travail, boucle prix-salaire et taux de chômage d'équilibre

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  • Gilbert Cette

Abstract

[eng] Work duration wage-price spiral and equilibrium unemployment rate. Gilbert Cette. This paper assess the general reduction of work duration conse quences (RWD) on the long run equilibrium unemployment rate. Our framework is the price-wage spirals which are included in the big macroeconomic models of the French economy. We point out the fea- tures of the price-wage spiral which allow for RWD scenario to affect the long-run equilibrium unemployment rate. When such effect takes place, we analyze each component influences'. We use the wage price spirals included in the main Keynesian macroeconomic models which are conventionally used in France to make an assessment of economic policies. If there is any impact on the equilibrium unemployment rate, we reach the conclusion that it is not necessarily positive. In fact, it can be either negative. In order to push down the equilibrium unemployment rate, the components of the RWD scenario must fulfill some conditions : the productivity gap induced by the RWD have to finance costs increase due to the RWD, and linked to the existence of fixed costs per worker and to the increase of hourly gains associated with the RWD. Eventually, results appear trivial : a RWD scenario will bring down the equilibrium rate of unemployment if it does not raise the production costs. In other cases, the equilibrium unemployment rate may be pushed up. [fre] Cette étude se propose d'apporter quelques éléments au débat théorique concernant l'impact d'un scénario général de réduction du temps de travail (RTT) sur le taux de chômage d'équilibre de long terme implicite aux boucles prix-salaire des grands modèles macroéconomiques français. Cette analyse vise donc à expliciter pour quelles spécifications de la boucle prix-salaire un scénario de RTT peut modifier le taux de chômage d'équilibre de long terme, mais aussi l'influence de chacune des composantes du scénario sur la modification (quand elle existe). A cette fin, les boucles prix-salaire retenues s'inspirent de celles adoptées par les principaux modèles macroéconomiques neo-keynésiens couramment utilisés en France pour des évaluations de politiques économiques. Il ressort de l'analyse que l'impact d'un scénario de RTT sur le taux de chômage d'équilibre (quand il existe) n'est pas nécessairement favorable : en toute généralité, il peut être positif ou négatif. Les composantes du scénario de RTT doivent respecter certaines contraintes pour que le taux de chômage d'équilibre soit abaissé. Il y aura baisse du taux de chômage d'équilibre si les gains de productivité horaires induits par la RTT permettent de financer les augmentations de coûts liés à la RTT, et correspondants aux coûts fixes par travailleur, et à l'augmentation du revenu salarial horaire associée à la RTT. On retrouve ici un résultat assez trivial : un scénario de RTT abaisse le niveau du taux de chômage d'équilibre s'il n'augmente pas les coûts de production de l'entreprise. Dans le cas contraire, il peut élever le taux de chômage d'équilibre.

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File URL: http://dx.doi.org/10.3406/ofce.1998.1487
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File URL: http://www.persee.fr/articleAsPDF/ofce_0751-6614_1998_num_64_1_1487/ofce_0751-6614_1998_num_64_1_1487.pdf?mode=light
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Bibliographic Info

Article provided by Programme National Persée in its journal Revue de l'OFCE.

Volume (Year): 64 (1998)
Issue (Month): 1 ()
Pages: 129-146

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Handle: RePEc:prs:rvofce:ofce_0751-6614_1998_num_64_1_1487

Note: DOI:10.3406/ofce.1998.1487
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Web page: http://www.persee.fr/web/revues/home/prescript/revue/ofce

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Cited by:
  1. Maurice Comte, 2005. "Le sous-emploi: pourquoi?," Post-Print hal-00136999, HAL.

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