ARE EARNINGS PROFILES STEEPER THAN PRODUCTIVITY PROFILES - EVIDENCE FROM ISRAELI FIRM-LEVEL DATA
ARE EARNINGS PROFILES STEEPER THAN PRODUCTIVITY PROFILES - EVIDENCE FROM ISRAELI FIRM-LEVEL DATA
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DOI：
10.2307/146192
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发表时间：
1995-12-01
影响因子：
5.2
通讯作者：
NEUMARK, D
中科院分区：
文献类型：
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作者：
HELLERSTEIN, JK;NEUMARK, D
我们通过直接估计不同年龄组工人之间的边际生产率差异，并将其与相关的收入差异进行比较，使用以色列制造业企业的当代数据，来测试对年龄收入增长的竞争性解释。结果表明，在控制其他生产性投入和企业特征的情况下，对于代表我们样本中大多数工人的非熟练或低技能工人，收入和生产率曲线都是向上倾斜的。此外，这些轮廓彼此紧密地镜像，并且在统计上是不可区分的。然而，对曲线的估计是不够精确的，即使是盈利增长和生产率增长的点估计值之间的相当大的偏差在统计上也不会显着。虽然我们认为结果与生命周期中收入状况不断上升的一般人力资本模型最一致，但没有强有力的证据可以拒绝替代模型。
We test competing explanations of rising age-earnings profiles by obtaining direct estimates of marginal productivity differentials between workers in different age groups and comparing these to associated earnings differentials, using contemporary data from Israeli manufacturing firms. The results indicate that, controlling for other productive inputs and firm characteristics, for the unskilled or less-skilled workers who represent most of the workers in our sample, both earnings and productivity profiles are upward sloping. Moreover, these profiles mirror each other closely, and are statistically indistinguishable. However, the estimates of the profiles are sufficiently imprecise that even sizable deviations between point estimates of earnings growth and productivity growth would not be statistically significant. While we view the results as most consistent with a general human capital model of rising earnings profiles over the life cycle, there is not strong evidence with which to reject alternative models.