Journal of Occupational Health最新文献

{"title":"Association of work-related stressors, support, and satisfaction with cardiovascular disease incidence among Japanese civil servants: a prospective cohort study.","authors":"Zean Song, Midori Takada, Shuang Wang, Nanami Nishio, Xuliang Shi, Mei Kobayashi, Masaaki Matsunaga, Yuito Hosaka, Atsuhiko Ota, Rei Otsuka, Koji Tamakoshi, Hiroshi Yatsuya","doi":"10.1093/joccuh/uiag006","DOIUrl":"10.1093/joccuh/uiag006","url":null,"abstract":"<p><strong>Objectives: </strong>Work-related stress is associated with cardiovascular disease (CVD), yet the contributions of specific work-related stressors, support, and satisfaction to CVD incidence are not fully understood. Clarifying whether lifestyle behaviors and physiological factors mediate associations between stressors and CVD is essential for targeted prevention.</p><p><strong>Methods: </strong>In this prospective cohort study, a cohort of 4820 Japanese workers (3876 men and 944 women) aged 35-65 years was followed up for CVD incidence from 2007 to 2022. Work-related stressors (eg, quantitative job overload), support (eg, supervisor support), and satisfaction (eg, family life satisfaction) were assessed using the 57-item Brief Job Stress Questionnaire. Multivariable Cox proportional hazards models were used to estimate hazard ratios (HRs) and 95% CIs for CVD risk. Mediation analysis evaluated the role of lifestyle behaviors (eg, smoking, alcohol consumption) and physiological factors (eg, systolic blood pressure, obesity) in the association between stressors and CVD incidence.</p><p><strong>Results: </strong>Quantitative job overload, low supervisor support, and low family life satisfaction were independently associated with increased CVD incidence (HRs ranging from 1.69 to 2.33). A proportion (24.9%) of the association of quantitative job overload with CVD was significantly mediated by obesity (P = .007).</p><p><strong>Conclusions: </strong>Quantitative job overload, lack of supervisor support, and low family life satisfaction were significant predictors of CVD among Japanese civil servants. These findings suggest that both reducing excessive workload and strengthening support systems inside and outside the workplace may be important for CVD prevention among Japanese civil servants.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13082224/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146086090","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":"Current status of support activities for balancing medical treatment and work by company size and their relationship with turnover rates.","authors":"Noriko Nishikido, Hitomi Abe, Etsuko Yoshikawa, Satoko Shimamoto, Kota Fukai, Makoto Tajima, Minako Sasaki, Michiyo Ito","doi":"10.1093/joccuh/uiag005","DOIUrl":"10.1093/joccuh/uiag005","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to clarify the current status of support activities for balancing medical treatment and work by company size and to examine their relationships with turnover rates.</p><p><strong>Methods: </strong>Managers and human resources personnel registered with an internet research firm were surveyed. A total of 1500 subjects were incorporated in this anonymous online survey, with 300 subjects in each of the 5 tiers of company size. The questionnaire included company size, turnover rate, and 24 items of support activities for balancing treatment and work rated on a 4-point scale. A confirmatory factor analysis (CFA) was conducted on these 24 items. Adjusted means were calculated for each factor score by company size using analysis of covariance, with post hoc tests to identify specific differences among company sizes. Multiple logistic regression analyses were conducted to examine relationships between initiatives and turnover rates.</p><p><strong>Results: </strong>A CFA supported a 7-factor model of support activities. Significant differences among company sizes were found for 5 factors. For example, fostering a workplace climate that facilitates balancing treatment and work showed higher scores among companies with fewer than 50 employees. Associations between various initiatives for treatment-work balance and turnover rates varied by company size.</p><p><strong>Conclusions: </strong>This study revealed that multifaceted initiatives for balancing treatment and work, assessed using a 7-factor, 24-item index, differed by company size and were associated with turnover rates. These findings provide important implications for promoting support for balancing treatment and work across companies of all sizes.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13174269/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146086139","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":"Associations of diverse diseases with work productivity among Japanese workers in the context of multimorbidity: additional analysis of a database study.","authors":"Takuya Maekawa, Kentaro Yamato, Norihiro Nakamichi, Masaya Takahashi, Ryotaro Ishii, Takeo Nakayama","doi":"10.1093/joccuh/uiag033","DOIUrl":"10.1093/joccuh/uiag033","url":null,"abstract":"<p><strong>Objectives: </strong>Building on the previous descriptive study of work productivity across various diseases among Japanese workers, this additional analysis aimed to assess the associations between multimorbidity and work productivity, as well as independent associations between each disease and work productivity, accounting for coexisting diseases.</p><p><strong>Methods: </strong>From the original study population of the secondary dataset derived from health insurance claims and online surveys, including workers aged ≥19 years who completed the Work Productivity and Activity Impairment questionnaire-General Health (WPAI-GH) in an online survey in 2021, we analyzed participants aged <65 years (n = 30 953). The association of a WPAI score >0% with diseases count and each target disease adjusted for other diseases was explored using logistic regression, and the predicted probabilities of having a score >0% for each disease were derived.</p><p><strong>Results: </strong>The odds ratios (ORs) for having a WPAI score of >0% increased (OR > 1) per additional disease. Associated with higher odds of having a score >0% were, in males, migraine, depression, dysthymia, diarrheal disorders, and insomnia; and in females, migraine, insomnia, and atopic dermatitis. Femoral neck fracture, dysthymia, depression, migraine, and menopausal disorder in males, and migraine and ischemic heart disease in females were among the top diseases with high predicted probabilities.</p><p><strong>Conclusions: </strong>Each incremental disease was significantly associated with impaired work productivity. After adjusting for other comorbidities, work productivity impairment was associated with psychiatric disorders and migraines. These findings underscore the importance of optimal management of preexisting conditions and prevention of comorbidities.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13464672/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148338917","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":"Current practice in ionizing-radiation health examinations at occupational health institutions in Japan: a nationwide questionnaire survey.","authors":"Hiroko Kitamura, Tatsuo Nagata, Takashi Moritake","doi":"10.1093/joccuh/uiag049","DOIUrl":"10.1093/joccuh/uiag049","url":null,"abstract":"<p><strong>Objectives: </strong>To characterize the implementation of ionizing-radiation health examinations at occupational health institutions in Japan and examine how these practices are implemented and interpreted within the current legal framework. We also identified operational factors that may influence their contribution to evaluating radiation-related health effects, fitness-for-work judgments, and occupational radiation protection.</p><p><strong>Methods: </strong>A cross-sectional online questionnaire survey was conducted from January 28 to February 18, 2025, among member institutions listed in the National Federation of Industrial Health Organization directory. Invitations were mailed to 173 institutions, each designating a respondent knowledgeable about examination implementation. Descriptive results were summarized using item-specific denominators and stratified by annual examination volume.</p><p><strong>Results: </strong>In total, 90 institutions responded, of which 89 provided ionizing-radiation health examinations. Exposure history was primarily obtained through worker self-report, with limited use of employer documentation or dose records. Lens examinations mainly relied on visual inspection or penlight examination; slit-lamp examination was rare, and retro-illumination imaging was not reported. Skin examinations almost exclusively used unaided visual inspection. Institutions differed in diagnostic classification frameworks and whether personal dose information informed judgment.</p><p><strong>Conclusions: </strong>Implementation varied across institutions, particularly in exposure assessment and the use of personal dose information in clinical judgment. This heterogeneity may limit not only the interpretability of examination results but also their contribution to evaluating radiation-related health effects, fitness-for-work judgments, and occupational radiation protection. These findings highlight the importance of improving the availability and integration of exposure-related information within existing examination processes, particularly in predominantly low-dose occupational environments.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13615524/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148874503","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":"Decreasing prevalence in sickness presenteeism before, during, and after the COVID-19 pandemic: evidence from repeated Korean national surveys.","authors":"Ki-Hun Hong, Byung-Sun Choi, Dong Hoon Lee","doi":"10.1093/joccuh/uiaf076","DOIUrl":"10.1093/joccuh/uiaf076","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to investigate the association between the coronavirus disease 2019 (COVID-19) pandemic and sickness presenteeism by directly comparing data collected before, during, and after the pandemic.</p><p><strong>Methods: </strong>We analyzed data from the fifth (conducted before the pandemic: July 2017 to November 2017), sixth (conducted during the pandemic: October 2020 to April 2021), and seventh (conducted after the pandemic: July 2023 to November 2023) Korean Working Conditions Surveys, comprising 114 140 workers. The primary outcome was self-reported sickness presenteeism, defined as attending work despite illness over the past 12 months. Logistic regression models were used to estimate the association between the COVID-19 period and sickness presenteeism after adjusting for demographic characteristics.</p><p><strong>Results: </strong>The prevalence of sickness presenteeism significantly decreased from 20.9% (before the pandemic) to 17.2% (during the pandemic), and it further decreased to 6.9% (after the pandemic). After adjusting for demographic and workplace characteristics, the odds of sickness presenteeism were significantly lower during the pandemic (odds ratio [OR] 0.84; 95% CI, 0.80-0.87) than before. Furthermore, the odds further decreased after the pandemic (OR 0.35; 95% CI, 0.33-0.37) relative to during the pandemic.</p><p><strong>Conclusions: </strong>Sickness presenteeism decreased across the COVID-19 pandemic periods in South Korea. This decrease was observed in relation to the implementation of government-mandated sick leave policies for infectious disease control, suggesting an association between policy enforcement and decreasing sickness presenteeism.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12965806/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145833912","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":"Correction to: Effects of a smartphone-based stress management program on work performance, sick leave, and intention to leave among nurses during COVID-19 in Vietnam and Thailand: an analysis of secondary outcomes of a randomized controlled trial.","authors":"","doi":"10.1093/joccuh/uiag059","DOIUrl":"https://doi.org/10.1093/joccuh/uiag059","url":null,"abstract":"","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":"68 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171411","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":"Competencies required for occupational health nurses: a scoping review.","authors":"Etsuko Yoshikawa, Satoru Kanamori, Yoshiko Kubo, Yumi Takamizawa, Junko Nakatani","doi":"10.1093/joccuh/uiag023","DOIUrl":"10.1093/joccuh/uiag023","url":null,"abstract":"<p><strong>Objectives: </strong>The competencies required of occupational health nurses (OHNs) to effectively address increasingly complex occupational health needs require systematic clarification. This scoping review aimed to comprehensively examine occupational health nursing competencies by mapping their scope, definitions, and practical applications.</p><p><strong>Methods: </strong>This study adopted a scoping review methodology to systematically summarize key concepts and knowledge. Literature searches were conducted using the Ichushi Web and PubMed databases, covering studies published between 2015 and 2025. Keywords included \"occupational health nursing\" and \"competencies.\" Peer-reviewed studies published in English or Japanese were included. Two researchers independently conducted primary and secondary screenings, resulting in the selection of 31 studies based on predefined eligibility criteria.</p><p><strong>Results: </strong>Thirty-one studies were included in the review. Occupational health nursing competencies were described as both basic competencies, essential for all OHNs, and advanced competencies, which are demonstrated by proficient nurses and associated with high performance. The competencies were categorized into 4 domains: \"foundations of occupational health nursing,\" including professionalism and communication; \"coordination,\" including relationship building; \"management,\" including Plan-Do-Check-Act (PDCA)-based management; and \"occupational health activities,\" including health promotion and consultation.</p><p><strong>Conclusions: </strong>Occupational health nursing competencies span basic to advanced levels and integrate knowledge, skills, and professional attitudes required for effective occupational health practice. These competencies highlight the importance of foundational expertise, collaborative coordination, systematic management, and practical occupational health activities. The findings provide a framework that may support the development of structured education and training programs to strengthen occupational health nursing practice in increasingly complex work environments.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13229112/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147698528","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":"1,2-Dichloropropane, but not dichloromethane or trichloropropane, reduces apoptosis of human cholangiocytes co-cultured with macrophages.","authors":"Mst Mahfuza Rahman, Kyoshiro Kusagaya, Cai Zong, Yusuke Kimura, Abigail Ekuban, Ryoya Takizawa, Daichi Nagashima, Alzahraa Fergany, Sahoko Ichihara, Gaku Ichihara","doi":"10.1093/joccuh/uiag029","DOIUrl":"10.1093/joccuh/uiag029","url":null,"abstract":"<p><strong>Objectives: </strong>The roles of dichloromethane (DCM) and 1,2,3-trichloropropane (1,2,3-TCP) in occupational cholangiocarcinoma, first reported in 2012, remain elusive. This study aimed to determine the potential of 1,2-dichloropropane (1,2-DCP), DCM, and 1,2,3-TCP to induce DNA damage-a hallmark of carcinogenicity-in human cholangiocytes.</p><p><strong>Methods: </strong>Monocultures of human immortalized cholangiocytes (MMNK-1 cholangiocytes) and co-cultures of MMNK-1 cholangiocytes with human THP-1 monocyte-derived macrophages and monocytes were each exposed to 1,2-DCP, DCM or 1,2,3-TCP at 0, 0.1, and 0.4 mM for 24 hours. DNA double-strand break marker γ-H2AX-positive foci and γ-H2AX pan-nuclear staining-which is known to be induced during early or intermediate stages of apoptosis or under replicative stress/checkpoint abrogation in cholangiocytes-were counted in 100 and 200 cholangiocytes, respectively. Apoptosis was evaluated by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) staining.</p><p><strong>Results: </strong>The increase in dense (≥55) γ-H2AX foci induced by all 3 chemical compounds was significantly greater in co-cultures with macrophages, but not with monocytes, than in monocultures. However, only 1,2-DCP decreased the number of γ-H2AX pan-nuclear-positive and TUNEL-positive cholangiocytes in co-cultures with macrophages, but not in monocultured cholangiocytes. Co-treatment with a pan-caspase inhibitor decreased the number of γ-H2AX pan-nuclear-positive cholangiocytes in each group by about 50%, suggesting that apoptotic signaling is involved, at least in part, in the induction of γ-H2AX pan-nuclear-positive cholangiocytes.</p><p><strong>Conclusions: </strong>Our study showed that co-culture with macrophages enhanced DNA double-strand breaks induced by all 3 tested chemical compounds, while only 1,2-DCP exhibited a proliferative effect in monocultures and anti-apoptotic effects in co-cultures with macrophages, which are key characteristics of carcinogens, thus distinguishing 1,2-DCP from DCM and 1,2,3-TCP.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13335648/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148138241","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":"Daily presenteeism fluctuates substantially among Japanese workers while converging with retrospective WHO-HPQ scores.","authors":"Shohei Dobashi, Shuko Hotoge, Yujia Huo, Ayako Kikuchi, Hisashi Yoshimoto","doi":"10.1093/joccuh/uiag041","DOIUrl":"10.1093/joccuh/uiag041","url":null,"abstract":"<p><strong>Objectives: </strong>Presenteeism is commonly assessed using retrospective instruments such as the World Health Organization Health and Work Performance Questionnaire (WHO-HPQ); however, how daily presenteeism assessed using experience sampling relates to these standard measures remains unclear. This study quantified within-person variability in daily presenteeism assessed using experience sampling methods (ESMs) among Japanese workers, while also examining its convergence with retrospective WHO-HPQ presenteeism.</p><p><strong>Methods: </strong>This observational study enrolled 94 white-collar employees; 93 were included in the final analysis after exclusion of 1 participant because of missing data. Participants completed daily work performance assessments on 19 weekdays using a mobile-based ESM approach. Aggregated daily presenteeism scores were compared with retrospective WHO-HPQ presenteeism scores assessed over the preceding 4 weeks. Convergence was evaluated using Spearman rank correlation coefficient, and agreement was examined using Bland-Altman analysis. Within-person variability was quantified using the coefficient of variation (CV) and intraclass correlation coefficient (ICC).</p><p><strong>Results: </strong>Mean daily absolute presenteeism scores were strongly correlated with retrospective WHO-HPQ presenteeism scores (Spearman rs = 0.783, P < .001). Bland-Altman analysis showed minimal systematic differences on average, despite substantial individual-level variability. Daily presenteeism exhibited substantial variability, with a CV of 42.2% (95% CI, 36.7-47.6) and an ICC of 0.431.</p><p><strong>Conclusions: </strong>Daily presenteeism converged with retrospective WHO-HPQ presenteeism while capturing substantial within-person variability that is not fully reflected in retrospective assessments. These findings support interpreting presenteeism as a dynamically fluctuating state and highlight the importance of selecting measures with appropriate temporal resolution.</p>","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13483989/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148592136","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":"Comment on \"Predicting mental health-related sick leave using stress check data: development and validation of a workplace risk model\".","authors":"Kei Muroi, Shotaro Doki","doi":"10.1093/joccuh/uiag020","DOIUrl":"10.1093/joccuh/uiag020","url":null,"abstract":"","PeriodicalId":16632,"journal":{"name":"Journal of Occupational Health","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13225255/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147774257","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}