{"title":"Joint association of daily rest periods and sleep duration with sick leave: a one-year prospective cohort study of daytime employees in Japan.","authors":"Hiroki Ikeda, Tomohide Kubo, Shuhei Izawa, Nanako Nakamura-Taira, Toru Yoshikawa, Rie Akamatsu","doi":"10.2486/indhealth.2024-0069","DOIUrl":"10.2486/indhealth.2024-0069","url":null,"abstract":"<p><p>Daily rest period (DRP) refers to the interval between the end of one workday and the start of the next. This study examined the joint association of DRP and sleep duration with subsequent sick leave among Japanese daytime employees. A total of 5,593 participants were assessed for DRP and sleep duration at baseline and for sick leave at a one-year follow-up. They were categorized into ten groups based on their DRP and daily sleep duration. Logistic regression analyses for individuals experiencing sick leave for longer than a month showed that the combination of short DRP (<11 h) and sleep duration (<6 h) had a higher odds ratio (4.981, 95% confidence interval [CI]=1.126-22.046) than the reference group. Furthermore, the combination of short DRP and normal sleep duration had a higher odds ratio (8.152, 95% CI=1.801-36.902) than the reference group. Short DRP was associated with subsequent long sick leave.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"206-212"},"PeriodicalIF":1.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11995150/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141579565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association between long working hours of doctors and the seriousness of adverse events: a cross-sectional study using national adverse event reporting system data in Japan.","authors":"Yumi Arai, Yuko Kachi, Hiroyuki Hikichi, Kazuhiro Watanabe, Reiko Inoue, Noboru Iwata, Akizumi Tsutsumi","doi":"10.2486/indhealth.2023-0125","DOIUrl":"10.2486/indhealth.2023-0125","url":null,"abstract":"<p><p>The association between doctors' long working hours and the seriousness of adverse events with high patient impact has not been fully confirmed. Most previous studies were based on work hour regulations using more than 80 h per week as an indicator of long working hours. We aimed to assess the association using a shorter indicator as the cut-off for long working hours among hospital doctors including senior doctors. This cross-sectional study used 12,245 adverse event reports from the Japan Council for Quality Health Care. We defined long working hours as 55 h or more in the week before the adverse event and assessed the association with the seriousness of adverse events with high patient impact. The results showed that doctors working 55 or more hours in the preceding week were more likely to be involved in serious adverse events than those working fewer hours (odds ratio (OR) 1.22, 95% confidence interval (CI): 1.12-1.32). This association remained significant after adjusting for all covariates (OR 1.18, 95% CI: 1.08-1.28). Senior doctors were more likely to be involved in serious adverse events. Long working hours among doctors were associated with the seriousness of adverse events.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"156-163"},"PeriodicalIF":1.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11995148/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2025-04-01Epub Date: 2024-08-15DOI: 10.2486/indhealth.2023-0196
Brendan Ryan, Nastaran Dadashi, Keith Gibbs
{"title":"Supporting the management of long-term health risk from night work.","authors":"Brendan Ryan, Nastaran Dadashi, Keith Gibbs","doi":"10.2486/indhealth.2023-0196","DOIUrl":"10.2486/indhealth.2023-0196","url":null,"abstract":"<p><p>Societal demands mean that many companies operate throughout the day to provide services. The impact of night work on long-term health is not clear, but there is sufficient evidence for closer monitoring of this as a concern and industry is not sure what more they need to do about this potential problem. There are many health conditions and potential interventions to reduce risks from night working, but there is no clarity on how to design and implement intervention programmes for long-term health issues. This paper reports on a rapid review of 24 articles to examine how interventions can minimise long-term health risk from night work. The analysis has identified eight types of intervention that have been used in relation to seven types of long-term health conditions but has highlighted weaknesses in evaluation, in relation to the current knowledge of the implementation and effectiveness of the interventions for long-term health. Commentary is provided on how researchers and industry practitioners need to think about risk in different ways, improve implementation of interventions through a systemic approach to work design and organisation, and employ more participatory approaches to embed cultural change in organisations.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"108-128"},"PeriodicalIF":1.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11995156/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141982230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2025-04-01Epub Date: 2024-08-29DOI: 10.2486/indhealth.2024-0060
Nuri Purwito Adi, Tomohisa Nagata, Kiminori Odagami, Masako Nagata, Koji Mori
{"title":"Role of perceived organization support to promote diabetes treatment among workers.","authors":"Nuri Purwito Adi, Tomohisa Nagata, Kiminori Odagami, Masako Nagata, Koji Mori","doi":"10.2486/indhealth.2024-0060","DOIUrl":"10.2486/indhealth.2024-0060","url":null,"abstract":"<p><p>This study investigated association of Perceived Organization Support (POS) with diabetes treatment among workers. This prospective cohort study was conducted online, and parts of nations wide study stratified similarly with workers' characteristic in Japan. Samples were screened to those who had diabetes in the baseline years. Binary regression analysis and p for trend were used for statistical analysis. There were 1,203 participants with diabetes followed up regarding their treatment behavior. Higher POS were likely to seek appropriate diabetes treatment after adjustment with personal and occupational factors (p=0.032) but became marginally significant when adjusted with night shift status (p=0.051). Further analysis found that POS was only associated with diabetes treatment among workers with night shift. Higher POS was likely associated with proper diabetes treatment specifically among workers with night shift.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"141-147"},"PeriodicalIF":1.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11995151/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142092833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2025-03-17DOI: 10.2486/indhealth.2024-0158
Jeehee Min, Hoje Ryu, Seong-Sik Cho, Mo-Yeol Kang
{"title":"Association between work stress and sleep disturbances: the mediating role of pre-sleep arousal symptoms.","authors":"Jeehee Min, Hoje Ryu, Seong-Sik Cho, Mo-Yeol Kang","doi":"10.2486/indhealth.2024-0158","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0158","url":null,"abstract":"<p><p>This study investigated the association between work stress and sleep disturbance among Korean workers, focusing on the mediating effects of somatic and cognitive pre-sleep arousal symptoms. Data were derived from the \"Korean Work, Sleep, and Health Study (KWSHS),\" involving 4,393 participants. Work stress was assessed using the Korean Occupational Stress Scale, and sleep disturbances were measured using the Insomnia Severity Index and Pittsburgh Sleep Quality Index. The Pre-Sleep Arousal Scale was utilized for assessing pre-sleep arousal status. For statistical analyses, the χ<sup>2</sup> test, logistic regression analysis, and mediation analysis were used. Mediation analysis revealed that somatic pre-sleep arousal predominantly mediated the relationship between hazardous physical environments and insomnia symptoms (52.5%), while cognitive pre-sleep arousal was the primary mediator for high job demands (48.0%), organizational injustice (48.6%), and job insecurity (46.6%). These findings suggest that somatic and cognitive pre-sleep arousal serve distinct mediating roles in the relationship between specific types of work stress and sleep disturbances.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2025-03-14DOI: 10.2486/indhealth.2024-0211
Kati Karhula, Janne Halonen, Satu Mänttäri, Anne Punakallio, Sampsa Puttonen, Maria Sihvola, Pihla Säynäjäkangas, Mikael Sallinen
{"title":"Supporting the well-being of nurses, paramedics, and firefighters during external crises by managing workload: an umbrella review.","authors":"Kati Karhula, Janne Halonen, Satu Mänttäri, Anne Punakallio, Sampsa Puttonen, Maria Sihvola, Pihla Säynäjäkangas, Mikael Sallinen","doi":"10.2486/indhealth.2024-0211","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0211","url":null,"abstract":"<p><p>Support is needed for the well-being of nurses and first responders in external crises. We aimed to synthesize the evidence between workload management strategies and well-being of nurses, paramedics, and firefighters during external crises in an umbrella review. The data sources OVID Medline, APA PsycInfo, CINAHL, Web of Science and the Cochrane Library were searched between 1.1.2013-20.6.2023. Two independent reviewers assessed the eligibility of the publications and conducted the data extraction and narrative synthesis. The search identified 1,073 references on nurses and 182 on paramedics and firefighters. Of the 62 full texts, 16 systematic reviews on nurses were included, and of the 13 full texts on paramedics and firefighters, two systematic reviews were included, making a total of 18 systematic reviews. The quality of the publications was predominantly good (83%). Both employee and work-directed strategies were beneficial in supporting employee well-being during external crises. Proactive practical skills training and psychological interventions were found as the most promising employee-directed strategies. The corresponding work-directed strategies were effective communication, providing useful information and adequate working conditions, supportive leadership, and peer support. To support well-being of nurses and first responders during external crises, workload management strategies need to be proactively planned in workplaces.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2025-03-14DOI: 10.2486/indhealth.2024-0131
Jacques Wels, Rong Fu
{"title":"Associations of employment status, working time and job satisfaction with sleep duration and sleep quality among the 50+ population in Japan.","authors":"Jacques Wels, Rong Fu","doi":"10.2486/indhealth.2024-0131","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0131","url":null,"abstract":"<p><p>Few studies have addressed the relationship between sleep and employment in Japan. We use four waves of the Japan Study of Aging and Retirement (JSTAR) to address the relationship between weekday sleep duration, self-reported sleep quality and four self-reported indicators of sleep quality and employment status (model 1, full sample), working hours and job satisfaction (model 2, working sample) among individuals aged 50 and over (N=7,082). We apply mixed effects models for the linear outcome of sleep duration and cumulative link mixed models for the sleep quality variables, controlling for socio-demographic and health characteristics. In model 1, our findings show that, compared to full-time employees, all categories of workers and non-workers report longer sleep hours. Some sub-groups, such as contract workers, report higher odds of waking up at night or in the early morning, and taking longer time to fall asleep. In model 2, we find a positive association between working time and sleep hours but including job satisfaction in the model absorbs such a relationship, indicating the job satisfaction somehow reflects working time. Poor job satisfaction is linked to higher odds of experiencing difficulties in four of the five sleep quality measures.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characteristics of mental disorders among education and learning-support workers in 119 compensated cases in Japan.","authors":"Yuki Takahashi, Toru Yoshikawa, Kenji Yamamoto, Masaya Takahashi","doi":"10.2486/indhealth.2024-0101","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0101","url":null,"abstract":"<p><p>This study aimed to investigate the circumstances, characteristics, and background factors of mental disorders within the education and learning-support services, which is known for the frequent occurrence of mental disorders from overwork and poor psychosocial work environment. The study analyzed 119 cases of mental disorders and suicides in the education and learning-support services from fiscal years 2010 to 2019 on the database constructed by the Japan Research Center for Overwork-Related Disorders. The results exhibit that of 119 cases, 56 cases (47.1%) involved male employees while 63 cases (52.9%) involved female employees. From fiscal years 2010 to 2019, there were 43 cases of psychological stress related to work among males and 55 among females. The issue of ''interpersonal relationship'' was significantly higher in the education and learning-support services than in other industrial workers. Within the category of ''interpersonal relationship'' the specific issue of being ''(severely) harassed, bullied, or assaulted'' was especially prevalent (10 cases for males and 15 cases for females). Moreover, male employees reported many instances of suicide attempts, and their first attempt tended to lead to a completed suicide. Therefore, it is important to promote measures against harassment, bullying, and suicide in education and learning-support services.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143585596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2025-03-05DOI: 10.2486/indhealth.2024-0193
Ryunosuke Takagi, Anna Dalla Rosa, Sophie Gerdel, Junko Araki, Atsuko Kanai, Michelangelo Vianello
{"title":"The cost of collectivism: the role of workaholism and exploitation in the psychosocial mechanisms of overwork.","authors":"Ryunosuke Takagi, Anna Dalla Rosa, Sophie Gerdel, Junko Araki, Atsuko Kanai, Michelangelo Vianello","doi":"10.2486/indhealth.2024-0193","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0193","url":null,"abstract":"<p><p>Over 10,000 Japanese people are estimated die annually from overwork. Yet, the reasons why some employees in certain cultures persist in exploitative work environments remain unclear. This study investigates psychosocial factors that prevent exploited employees from leaving their organisations, with a specific emphasis on the role of collectivism. We hypothesise that perceptions of an overwork climate and elevated levels of workaholism contribute to employees' feelings of exploitation, subsequently increasing turnover intentions. Additionally, we predict that collectivism exacerbates the effect of overwork climate on workaholism and weakens employees' intentions to leave their exploitative work environment. Data from 147 Japanese employees were collected via online surveys using snowball sampling. Factor score path analysis and mediation tests (5,000 bootstrap samples) were employed to test our hypotheses. Results suggested that feelings of exploitation are positively linked to turnover intentions, which are driven by the perception of an overwork climate and employees' compulsive orientation towards work. Importantly, collectivism weakened the link between perceived exploitation and turnover intentions. This study provides an account of the complex interplay between organisational climate, culture, and the impact of feeling exploited on employees' intentions to quit, highlighting the potential adverse effects of collectivism on employees.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143566994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2025-03-04DOI: 10.2486/indhealth.2024-0171
Jeehee Min, Min-Seok Kim, Dong-Wook Lee, Seong-Sik Cho, Mo-Yeol Kang
{"title":"Paradox of long working hours: how income levels and satisfaction modify health outcomes.","authors":"Jeehee Min, Min-Seok Kim, Dong-Wook Lee, Seong-Sik Cho, Mo-Yeol Kang","doi":"10.2486/indhealth.2024-0171","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0171","url":null,"abstract":"<p><p>This study investigates how household income levels and satisfaction with income impact the relationship between long working hours and self-rated health (SRH) among Korean workers. We analysed data from the Korean Labour & Income Panel Study spanning 2018 to 2022, including 8,954 to 10,079 wage workers annually. Weekly working hours and SRH were the primary variables, with equivalized household income levels classified into quartiles. A generalised estimating equation was used to assess the relationship between long working hours and poor SRH, adjusted for demographic and health-related factors. Subgroup analyses were conducted based on household income level and satisfaction. Long working hours were generally associated with poor SRH (OR 1.30, 95% CI 1.10-1.54) in unadjusted model, particularly among higher-income groups (OR 1.46, 95% CI 1.05-2.01 for Q4) after adjustment for covariates. However, no significant association was found for lower-income groups. When stratified by income satisfaction, longer working hours were significantly associated with poor SRH only in income-satisfied individuals among higher-income group. The health effects of long working hours may differ according to household income levels and satisfaction. Policy interventions should consider both work hour reductions and income adequacy to improve worker health.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143566992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}