Mortality Change, the Uncertainty Effect, and Retirement.

Mortality Change, the Uncertainty Effect, and Retirement.
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DOI:
10.1007/s10887-010-9050-1
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发表时间:
2010-03
影响因子:
2.3
通讯作者:
Weil, David N.
Weil, David N.
中科院分区:
经济学1区
文献类型:
--
作者:
Kalemli-Ozcan, Sebnem;Weil, David N.

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我们研究了死亡率下降在解释世纪退休人数上升方面的作用。我们构建了一个模型,在这个模型中,个体在其一生中做出的劳动/休闲选择受到其死亡日期的不确定性的影响。在一个高死亡率的环境中,一个为退休而储蓄的人面临着在享受他计划的休闲之前死亡的高风险。在这种情况下,最佳方案是让人们工作到死。然而,随着死亡率福尔斯的下降,为退休做计划和储蓄就成了最佳选择。我们分析我们的模型,使用两个数学公式的生存函数,以及在过去世纪的美国寿命表的实际变化的数据,并表明,这种“不确定性效应”的死亡率下降将超过“地平线效应”的预期寿命上升会导致延迟退休。
We examine the role of declining mortality in explaining the rise of retirement over the course of the 20th century. We construct a model in which individuals make labor/leisure choices over their lifetimes subject to uncertainty about their dates of death. In an environment with high mortality, an individual who saves for retirement faces a high risk of dying before he can enjoy his planned leisure. In this case, the optimal plan is for people to work until they die. As mortality falls, however, it becomes optimal to plan, and save for, retirement. We analyze our model using two mathematical formulations of the survival function as well as data on actual changes in the US life table over the last century, and show that this “uncertainty effect” of declining mortality would have more than outweighed the “horizon effect” by which rising life expectancy would have led to later retirement.
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