Based on the microdata from the Basic Survey on Wage Structure and the original survey, we estimate the Mincerian wage function, incorporating job tasks, to examine the importance of job task wage premiums as well as long-term changes in the Japanese labor market. In the estimation, we found that the association between abstract tasks and wages is positive and that a one standard deviation increase in the abstract task scores was associated with a 21.2% wage premium, while that of routine and manual task wage premiums are negative. We also found that the total explanatory power of three task scores (routine, abstract, and manual tasks) is higher than that of the education dummies or the major occupation group dummies. We also confirmed two testable implications from the Roy model regarding the workers’ self-selection into occupations in the Japanese labor market. These findings are similar to those obtained by Autor and Handel (2013). On the other hand, we found no major changes between 2005 and 2016 in the coefficients of routine, abstract, or manual task scores as well as their explanatory powers in the wage function. We then observed that demand for labor increased in many occupations involving many non-routine or manual tasks, but at the same time, the supply of labor to those occupations also increased. Therefore, we discussed that the change in labor demand and supply may be one of the reasons for the stable relationship between job tasks and wages.

基于工资结构基础调查中的微观数据在原始调查中，我们估计了Mincerian工资函数（包括工作任务），以研究工作任务工资溢价的重要性以及日本劳动力市场的长期变化。在估算中，我们发现抽象任务与工资之间的关联为正，抽象任务分数的一个标准差增加与21.2％的工资溢价相关，而常规和手动任务工资溢价的负相关。我们还发现，三个任务得分（例行任务，抽象任务和手动任务）的总解释力高于教育假人或主要职业群体假人的解释力。我们还证实了Roy模型中有关工人自我选择进入日本劳动力市场职业的两个可验证的含义。这些发现与Autor and Handel（2013）获得的结果相似。另一方面，我们发现在2005年至2016年之间，例行，抽象或手动任务得分的系数及其在工资函数中的解释力没有重大变化。然后我们观察到，在涉及许多非常规或手动任务的许多职业中，对劳动力的需求增加了，但与此同时，对这些职业的劳动力供给也有所增加。因此，我们讨论了劳动力供求关系的变化可能是工作任务与工资之间稳定关系的原因之一。然后我们观察到，在涉及许多非常规或手动任务的许多职业中，对劳动力的需求增加了，但与此同时，对这些职业的劳动力供给也有所增加。因此，我们讨论了劳动力供求关系的变化可能是工作任务与工资之间稳定关系的原因之一。然后我们观察到，在涉及许多非常规或手动任务的许多职业中，对劳动力的需求增加了，但与此同时，对这些职业的劳动力供给也有所增加。因此，我们讨论了劳动力供求关系的变化可能是工作任务与工资之间稳定关系的原因之一。