Longevity and Lifetime Labour Input: Data and Implications

Moshe Hazan

No 5963, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: The Ben-Porath (1967) mechanism suggests that prolonging the period during which individuals may receive returns on their investment spurs investment in human capital and causes growth. An important, albeit implicit implication of this mechanism is that the total labour input over a lifetime must increase as longevity does. Otherwise, the incentive to invest in education would not increase. We propose an empirical evaluation of the relevance of this mechanism to the transition from 'stagnation' to 'growth' in today?s developed economies. Specifically, we estimate the expected total lifetime working hours of consecutive cohorts of American men born between 1840 and 1970. Our results show that despite a gain of more than 15 years in life expectancy at the age 5, the expected total lifetime working hours have declined by more than 20 percent between the oldest and youngest cohorts. Furthermore, the similarity in the trends and the magnitudes of the determinants of total lifetime labour input between the US and many European countries suggest that our result is not confined to the US experience; rather, it is a robust feature of the process of development. We conclude that the Ben-Porath mechanism has had no effect on the accumulation of human capital during the growth process of the nineteenth and twentieth centuries.

Keywords: Longevity; Human capital; Hours worked (search for similar items in EconPapers)
JEL-codes: E20 J22 J24 J26 O11 (search for similar items in EconPapers)
Date: 2006-11
New Economics Papers: this item is included in nep-dev, nep-hrm and nep-mac
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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Working Paper: Longevity and Lifetime Labor Input: Data and Implications (2006)
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