| Project/Area Number |
15K17080
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Public finance/Public economy
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| Research Institution | Kyoto Sangyo University (2018-2019)
Meisei University (2015-2017) |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Keywords | 健康 / 時間配分 / 睡眠時間 / 賃金 / 労働生産性 / 労働時間 / 余暇時間 / スポーツ / 生産性 |
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| Outline of Final Research Achievements |
This study examines the causal impact of sleeping hours on labor productivity and health using Japanese datasets for two case studies. In the first case study, the causal effect of sleep on the wage rates of Japanese men are examined, utilizing the Keio Household Panel Survey. The potential endogeneity of deciding how many hours to sleep are dealt with using a fixed effects model with an instrumental variable estimation technique. The findings show that, on average, a weekly one-hour increase in the number of sleeping hours increases the wage rate by 4-6%. In the second case study, the causal effect of sleep on the health status of the elderly are examined using Japanese time-use datasets from the Survey on Time Use and Leisure Activities. Concerning the potential endogeneity of sleeping hours, it is shown that, for Japanese men and women aged 60 years and older, an increase in the hours of sleep generally has a positive impact on their health status.
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| Academic Significance and Societal Importance of the Research Achievements |
日本においても個人の時間配分を分析対象とする経済学の研究が蓄積されつつあるが，研究の蓄積は十分とはいえない．このような中で，余暇時間のうちの睡眠時間を何らかの生産に使用する時間として取り出し，その時間と生産量との関係を分析すれば，個人の行動をうまく表現できる可能性がある．例えば，高齢期においては，多くの人々が労働市場から引退することから，引退前後での時間の使い方も大きく異なる．高齢期の睡眠時間が健康状態を改善する働きを持つことを指摘した本研究の結果は，引退後の生活時間の配分と健康資本の維持に関する議論にもつながり，医療や介護，労働市場に関する具体的な高齢者の政策への応用が期待される．
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