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Évolutions démographiques et déformation du cycle de la vie active. Quelles relations ?


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  • Didier Blanchet
  • Fabien Toutlemonde


Historical changes in the typical life-cycle do not conform to a simple model of equal-sharing in which additional years of life are equally distributed between time devoted to training, work and leisure. We have instead observed a quasi-general decline in the share of our life-cycles that is devoted to labour. The major reason for such a deviation is the fact that this life-cycle evolves in response to other factors, such as productivity, preferences and conditions for the accumulation and depreciation of human capital. We investigate the articulation of these different factors in a continuous-time model of life-cycle optimisation that allows a realistic treatment of demographic structure. The main motives for the contraction of working lives are global productivity and the importance of human capital depreciation. We show that the equal-sharing scenario requires a parallel evolution of productivity and consumption norms, and a shift in the profile of human capital depreciation that parallels the change in life expectancy. Code JEL : J11, J22, J24, J26

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Article provided by Presses de Sciences-Po in its journal Revue économique.

Volume (Year): 59 (2008)
Issue (Month): 5 ()
Pages: 995-1021

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Handle: RePEc:cai:recosp:reco_595_0995

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  1. Didier Blanchet & Magali Beffy & Marion Bachelet, 2011. "Projeter l’impact des réformes des retraites sur l’activité des 55 ans et plus : une comparaison de trois modèles," Économie et Statistique, Programme National Persée, vol. 441(1), pages 123-143.


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