Associations Between Nonstandard Work Schedules and Abnormal Sleep Duration and Weekend Catch-Up Sleep: Findings From a Nationally Representative Sample of Middle-Aged Workers in Japan

IF 2.4 3区医学 Q2 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH

American journal of industrial medicine Pub Date : 2026-06-06 Epub Date: 2026-05-03 DOI:10.1002/ajim.70087

Huilin Wang, Hideyuki Kobayashi, Masaya Takahashi, Kyoko Suzuki, Tomohiro Takami

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引用次数: 0

Abstract

Background

Owing to the rise of the 24/7 economy, many workers operate around the clock. However, few studies have explored the association between specific types of nonstandard work schedules (NWSs) and sleep.

Methods

Using a nationally representative sample of middle-aged workers (n = 14,675) in Japan, we investigated the associations between four types of NWSs (evening, morning, both morning and evening, and night schedules) and abnormal sleep duration on weekdays and weekend catch-up sleep (WCS) via multinomial logistic regression.

Results

Compared to daytime work schedules, all four types of NWSs were associated with increased risks of very short (< 5 h) and long (≥ 9 h) sleep duration and short (1 h) WCS. Night schedules were associated with the highest risk of very short sleep duration, whereas both morning and evening schedules were associated with the highest risk of short (5 h) and long sleep duration. Additionally, both morning and evening, and night schedules were associated with increased risks of moderate (2 h) and long (≥ 3 h) WCS. Stratification revealed sex-related differences.

Conclusions

Work timing is independently associated with abnormal sleep duration and WCS. Furthermore, the associations differ across different types of NWSs. These findings provide insights into worktime arrangements in workplaces to promote sleep health.

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非标准工作时间表与异常睡眠时间和周末补觉之间的联系：来自日本全国代表性中年工人样本的研究结果。

背景：由于24/7经济的兴起，许多工人昼夜不停地工作。然而，很少有研究探索特定类型的非标准工作时间表（NWSs）与睡眠之间的关系。方法：采用具有全国代表性的日本中年工人样本（n = 14,675），我们通过多项逻辑回归研究了四种类型的NWSs（晚上，早上，早晚和晚上）与工作日和周末补觉（WCS）异常睡眠时间之间的关系。结果：与白天工作安排相比，所有四种类型的NWSs都与极短(结论：工作时间与异常睡眠时间和WCS独立相关。此外，不同类型的NWSs之间的关联也不同。这些发现为工作场所的工作时间安排提供了见解，以促进睡眠健康。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

American journal of industrial medicine 医学-公共卫生、环境卫生与职业卫生

CiteScore

5.90

自引率

5.70%

发文量

108

审稿时长

4-8 weeks

期刊介绍： American Journal of Industrial Medicine considers for publication reports of original research, review articles, instructive case reports, and analyses of policy in the fields of occupational and environmental health and safety. The Journal also accepts commentaries, book reviews and letters of comment and criticism. The goals of the journal are to advance and disseminate knowledge, promote research and foster the prevention of disease and injury. Specific topics of interest include: occupational disease; environmental disease; pesticides; cancer; occupational epidemiology; environmental epidemiology; disease surveillance systems; ergonomics; dust diseases; lead poisoning; neurotoxicology; endocrine disruptors.