Safety and Health at Work最新文献

{"title":"Organizational Support for Safety and Work Ability in Healthcare Workers: A Longitudinal Study","authors":"Sundus Siddique,&nbsp;Rebecca Gore,&nbsp;Tomas Hemmingsson,&nbsp;Laura Punnett","doi":"10.1016/j.shaw.2026.07.003","DOIUrl":"10.1016/j.shaw.2026.07.003","url":null,"abstract":"<div><h3>Background</h3><div>Maintaining healthcare worker (HCW) work ability and continuing employment are critical issues. We examined the association of work ability with the previously unexamined work-environment factors of organizational support for safety (OSS) and surface-acting emotional labor (SaEL).</div></div><div><h3>Methods</h3><div>A self-administered survey covering work-environment features recruited employees of five U.S. public-sector healthcare facilities in 2018-2019 and 2021. Linear regression on the outcome of work ability, both cross-sectionally and longitudinally, focused on OSS and SaEL with additional independent variables.</div></div><div><h3>Results</h3><div>A total of 1,059 and 1,553 surveys were collected from predominantly female HCWs; 425 answered both questionnaires. Almost two thirds of the HCWs were either non-direct care or unlicensed HCWs. Work ability scores were lower in direct-care workers versus non-direct-care workers. In multivariable regression models, OSS was positively associated with work ability, and SaEL was negatively associated, cross-sectionally at baseline and follow-up. Job strain, back pain, and safety hazards were also negatively associated with work in both cross-sectional and longitudinal analyses, while social support and civility norms (combined) were positively associated. In the longitudinal analysis, only OSS positively predicted work ability, while SaEL had a borderline negative effect.</div></div><div><h3>Conclusion</h3><div>The finding that OSS predicts work ability is novel. Despite high turnover, there has been little examination of risk factors for low work ability among HCWs. The importance of this organizational predictor justifies organization-level interventions to improve workplace safety. Such actions could simultaneously address and mitigate the additional risk factors of SaEL, job strain, and back pain in order to improve work ability for all groups of HCWs.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 401-407"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative and Qualitative Evaluation of the Sweating Function of the Human Earlobe for Heat Stress Monitoring","authors":"Chikage Nagano,&nbsp;Kentaro Kado,&nbsp;Kisaki Maeda,&nbsp;Keiichi Tajima,&nbsp;Kimiyo Mori,&nbsp;Seichi Horie","doi":"10.1016/j.shaw.2026.06.001","DOIUrl":"10.1016/j.shaw.2026.06.001","url":null,"abstract":"<div><h3>Background</h3><div>This study evaluated thermoregulatory sweating at the earlobe under heat exposure as an initial step toward exploring its potential as a technically interesting candidate site for skin temperature monitoring in occupational heat stress assessment.</div></div><div><h3>Methods</h3><div>Two experiments were conducted in healthy male participants. Sweat rates on the medial and lateral earlobe and forearm were quantitatively measured using ventilated capsule perspiration meters at 25, 30, and 35 °C ambient temperatures with 50% relative humidity. Qualitative sweating was assessed using Minor's iodine-starch test at 40°C ambient temperature and 50% relative humidity.</div></div><div><h3>Results</h3><div>Earlobe sweat rates were consistently and significantly lower than forearm values, with minimal temperature-related variation. No iodine-starch reaction was observed on the earlobe, whereas sweating was detected on the auricle and face.</div></div><div><h3>Conclusion</h3><div>The earlobe appeared to exhibit negligible thermoregulatory sweating under the tested conditions. Given the low likelihood of sweating-related interference, the earlobe may warrant further investigation as a technically interesting candidate site for future validation studies of skin temperature monitoring in occupational heat stress assessment.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 419-425"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Analysis of Respirator Fit Factors Using Korean Test Panels and Standardized Korean Headforms","authors":"Hyekyung Seo,&nbsp;Hoyeong Jang,&nbsp;Sungho Kim","doi":"10.1016/j.shaw.2026.06.002","DOIUrl":"10.1016/j.shaw.2026.06.002","url":null,"abstract":"<div><h3>Background</h3><div>Fit testing is essential to evaluate the effectiveness of respiratory protective equipment for ensuring occupational safety. The Republic of Korea currently lacks a standardized fit test panel that reflects domestic facial characteristics, although international guidelines emphasize its establishment. This study aimed to validate a Korean fit test panel developed according to international standards and to examine the consistency of fit test results between human participants and headforms with comparable facial dimensions.</div></div><div><h3>Methods</h3><div>The panel was developed using facial anthropometric data from 11,429 adults in the Size Republic of Korea database based on ISO 16976-2:2022(E). Fifty participants representing the panel categories underwent quantitative fit testing with various respirator models. Fit test pass rates of human participants and headforms were evaluated against the U.S. National Personal Protective Technology Laboratory ( 2015) criterion of 64–76% to determine the panel’s applicability.</div></div><div><h3>Results</h3><div>Participants with medium-to-large faces achieved significantly higher fit factors with large respirators (<em>p</em> &lt; 0.05), whereas those with small faces exhibited lower fit for small-sized models. Significant differences were observed across respirator size categories (<em>p</em> &lt; 0.05), with full-face types showing higher pass rates than half-face types. Human fit tests exceeded the National Personal Protective Technology Laboratory criterion (76–100%), supporting the panel’s international applicability. In contrast, headform-based testing produced lower fit factors, particularly for small respirators. Intraclass correlation coefficient analysis revealed poor agreement (&lt;16%) between human and headform results.</div></div><div><h3>Conclusion</h3><div>The Korean fit test panel appears to represent population-specific facial dimensions and shows potential for respirator evaluation under the tested conditions. However, differences between participants and headform outcomes indicate the need for improved headform fidelity to enhance test reliability.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 383-392"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occupational Solar UV Exposure and Skin Cancer: A Quantitative Framework for Individual Causal Attribution in Dermatology Practice","authors":"Eytan Ellenberg,&nbsp;Arieh Ingber,&nbsp;Akshaya S. Bhagavathula,&nbsp;Eldad Katorza,&nbsp;Yuval Ramot","doi":"10.1016/j.shaw.2026.05.001","DOIUrl":"10.1016/j.shaw.2026.05.001","url":null,"abstract":"<div><h3>Background</h3><div>Occupational solar ultraviolet radiation (UVR) exposure is a major risk factor for keratinocyte carcinomas in outdoor workers. Individual causal attribution for medico-legal purposes requires partitioning risk contributions between occupational exposure and individual susceptibility factors—a question distinct from population-level burden estimation. This study is primarily a quantitative/methodological application of FAIR to occupational UV-related skin cancer.</div></div><div><h3>Methods</h3><div>This methodological framework study applies the FAIR approach (Filtering evidence, Association quantification, Individual partitioning, Reasoned interpretation) to occupational solar UVR and skin cancer. Meta-analyses (1995–2025) were reviewed and adjusted for phototype, sex, and immune status. Individual attribution was estimated using game-theory–based decomposition (Shapley values) and stochastic Monte Carlo simulation to propagate uncertainty. Preventive scenarios incorporated sector-specific compliance and long-term economic modeling.</div></div><div><h3>Results</h3><div>Mean occupational causal shares were 35% for squamous cell carcinoma (SCC), 25% for basal cell carcinoma (BCC), 10% for melanoma, and 50% for actinic keratosis. The probability of exceeding the 20% medico-legal attribution threshold reached 85% for SCC and 75% for BCC. Prevention reduced expected cases by 10-15% and healthcare costs by 8-12%.</div></div><div><h3>Conclusions</h3><div>The FAIR framework provides a transparent, reproducible approach for integrating epidemiological evidence with individual attribution. These quantitative thresholds support the clinical and medico-legal recognition of work-related skin cancers.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 340-347"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occupational Morbidity and Fatal Injuries in Thailand, 2007–2024: A Nationwide Time-trend Study Using Workers’ Compensation Records","authors":"Pirawan Wangupadcha,&nbsp;Wor Mi Thi,&nbsp;Thodsaphon Lunnoo,&nbsp;Ratanee Kammoolkon,&nbsp;Birabongse Hardthakwong","doi":"10.1016/j.shaw.2026.07.005","DOIUrl":"10.1016/j.shaw.2026.07.005","url":null,"abstract":"<div><h3>Background</h3><div>Occupational injuries and work-related diseases remain a significant and persistent threat to the safety, health, and well-being of workers around the globe. This nationwide study aimed to examine long-term trends in occupational injuries and work-related diseases in Thailand from 2007 to 2024.</div></div><div><h3>Methods</h3><div>Administrative data from the Thailand Social Security Office were used to assess trends and to identify factors associated with fatal outcomes among reported occupational injury cases in 2024. Annual injury rates were calculated using decided cases as the numerator and the average number of registered employees as the denominator. Risk ratios (RRs) with 95% confidence intervals (CIs) were estimated.</div></div><div><h3>Results</h3><div>A total of 2,006,840 occupational injury cases were recorded. While the number of registered employees increased over time, overall injury rates declined from 24.57 to 7.29 per 1,000 workers and severe injury rates from 6.75 to 2.13 per 1,000 workers. However, fatal injury rates declined markedly but less consistently during the study period, from 9.61 to 4.94 per 100,000 workers. Musculoskeletal disorders remained the most frequently reported work-related disease. In 2024, older age (≥55 years; RR = 2.02, 95% CI: 1.56–2.62), construction-site injury (RR = 1.99, 95% CI: 1.64–2.42), vehicle-related injury (RR = 28.70, 95% CI: 24.55–33.55), and employment in establishments with ≤1,000 workers (RR = 1.75, 95% CI: 1.35–2.27) were associated with higher risk of fatal outcomes.</div></div><div><h3>Conclusion</h3><div>While overall occupational injury rates declined substantially over time, fatal injury rates showed a less consistent decline, indicating the need for continued efforts to prevent severe occupational injuries and fatalities.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 348-356"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Redefining Worker Protection in the Algorithmic Era: From Algorithmic Justice to Insurance Systems for the Gig Economy","authors":"Jian Lee,&nbsp;Jinha Yoon","doi":"10.1016/j.shaw.2026.05.004","DOIUrl":"10.1016/j.shaw.2026.05.004","url":null,"abstract":"<div><div>The rapid expansion of the digital platform economy has introduced novel occupational hazards driven by algorithmic management. This short communication examines the occupational health challenges faced by gig workers in the context of algorithmic control, focusing on four key mechanisms: trade-offs between economic success and worker health, uncertainty in terms of effort and reward, unreliable assessment of job performance, and incorrect attribution of responsibility. These algorithmic hazards differ substantially from conventional occupational risks and cannot be adequately addressed by existing occupational health and safety frameworks. To address these inequities, we propose redefining occupational health and safety standards under an algorithmic justice framework. Furthermore, we suggest implementing an algorithm tax and an algorithm-dependent insurance system to establish sustainable social safety nets. These measures, along with mandatory disclosure of algorithmic management systems as 'High-Impact AI,' offer a practical regulatory pathway to enforce worker protection and fairness within the evolving legal landscape in the algorithmic era.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 415-418"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Associations Between Weekly Commute Time, Weekday Sleep Duration, and Driving Fatigue Among Working Adults in Israel","authors":"Ronit Pinchas-Mizrachi,&nbsp;Sara Cohen,&nbsp;Dan Bouhnik,&nbsp;Raz Dekel","doi":"10.1016/j.shaw.2026.04.003","DOIUrl":"10.1016/j.shaw.2026.04.003","url":null,"abstract":"<div><h3>Background</h3><div>Long commutes are recognized as an occupational health risk and road safety risk. In high-traffic countries, prolonged commuting may represent a potentially significant yet underexplored public health concern, particularly with respect to gender-specific vulnerability patterns. This study thus examines the association between weekly commute time, weekday sleep duration, and driving fatigue via a gender-based analysis.</div></div><div><h3>Methods</h3><div>Data relating to 3,387 employed adults were drawn from the 2023 Israel Social Survey. Long commuting was defined as ≥15 hours/week; 20.2% of the survey respondents were long commuters, 54.7% were women, and 45.3% were men. Outcomes measured included insufficient sleep duration (&lt;6.5 hours) and self-reported driving fatigue. Multivariable logistic regression models were stratified by gender and adjusted for demographic and work-related variables.</div></div><div><h3>Results</h3><div>Long commuting was linked to insufficient sleep duration [odds ratio (OR) = 1.56] and increased driving fatigue (OR = 1.71) among women and with driving fatigue (OR = 2.13) but not significantly with sleep duration among men. Health behaviors differed according to gender, with women with long commutes engaging in more physical activity (46.2% vs. 40.3%) and exhibiting lower obesity rates (18.1% vs. 19.3%) and men being less active, more obese, and smoking more frequently.</div></div><div><h3>Conclusion</h3><div>Extended weekly commuting appears to be an independent gender-specific occupational health risk factor, exerting effects on sleep, fatigue, and health behaviors. Women report more sleep disruption, while men experience higher fatigue and adverse health behaviors. These findings highlight the need for gender-sensitive health interventions, flexible work policies, improved transportation infrastructure, and recognition of commuting as an important modifiable determinant of worker health.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 357-364"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laughter-inducing Interventions for Workplace Stress Management: A Scoping Review","authors":"Leonie Matteau,&nbsp;Mahee Gilbert-Ouimet,&nbsp;Theo Stefan,&nbsp;Juliette Demers,&nbsp;Jenny Jin,&nbsp;Isabelle Toupin,&nbsp;Moises C. Medrano,&nbsp;Annie Leblanc","doi":"10.1016/j.shaw.2026.03.006","DOIUrl":"10.1016/j.shaw.2026.03.006","url":null,"abstract":"<div><h3>Background</h3><div>Mental health at work is a public health priority. Previous studies in the general population suggest that laughter-inducing interventions may support mental health. Their workplace potential warrants a scoping review. The aim of this study was to document, in the literature, the components and effectiveness of laughter-inducing interventions in the workplace.</div></div><div><h3>Methods</h3><div>A structured search strategy was applied to 6 databases. Studies assessing laughter-inducing interventions among workers using interventional designs were included. Two reviewers independently screened and extracted data and appraised studies using the Mixed-Methods Appraisal Tool. Thematic analysis was performed to answer the research questions.</div></div><div><h3>Results</h3><div>Out of the 613 records identified, twenty-five studies were included with samples of varying sizes (<em>n</em> = 7-200 participants) and professions. Laughter-inducing interventions included introduction (background, rationale) (<em>n</em> = 7), laughter exercises (<em>n</em> = 19), breathing (<em>n</em> = 15), warm-up (<em>n</em> = 10), chanting (<em>n</em> = 8), relaxation (<em>n</em> = 7), movements (<em>n</em> = 6), games (<em>n</em> = 3), and expression of feelings or feedback (<em>n</em> = 4). Intervention formats varied in sessions (1-28), duration (10-90 min), frequency (daily to monthly), and length (1-90 days). The most frequently investigated outcome was stress (n = 16) with results generally statistically significant (<em>n</em> = 12). There was a paucity of data informing the implementation process. The quality appraisal revealed poor quality with risks of selection and/or confounding bias (<em>n</em> = 17/17 among nonrandomized studies) and risks of information and/or selection bias (<em>n</em> = 5/6 in randomized studies).</div></div><div><h3>Conclusion</h3><div>While findings suggest that laughter-inducing interventions may be promising for reducing workplace stress, most included studies were of poor methodological quality, warranting cautious interpretation. Further research is needed due to methodological heterogeneity and limitations.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 308-319"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mental Health Challenges and Workplace Risk Factors Among Sexual and Gender Minority Workers in Korea","authors":"Munyoung Yang,&nbsp;Hanul Kim,&nbsp;Keonhee Cho,&nbsp;Sejung Kim,&nbsp;Sinyoung Yang,&nbsp;Soyeong Park,&nbsp;Suejin Yeo,&nbsp;Hyoung-Ryoul Kim","doi":"10.1016/j.shaw.2026.04.005","DOIUrl":"10.1016/j.shaw.2026.04.005","url":null,"abstract":"<div><h3>Background</h3><div>This study examined disparities in mental health between sexual and gender minority (SGM) workers and the general working population in the Republic of Korea and identified workplace-related risk factors for depressive symptoms.</div></div><div><h3>Methods</h3><div>We conducted an online survey of 720 SGM workers (July–August 2024), assessing individual- and workplace-level factors and mental health outcomes. Mental health outcomes included depressive symptoms, suicidal ideation, and suicide attempts. Age-standardized prevalence ratios (aPRs) for depressive symptoms, suicidal ideation, and suicide attempts compared SGM workers with the general population using data from the 9th Republic of Korea National Health and Nutrition Examination Survey (KNHANES, 2022–2024) and the 7th Korean Working Conditions Survey (KWCS, 2023). Logistic regression identified risk factors for depressive symptoms.</div></div><div><h3>Results</h3><div>SGM workers had worse mental health (aPR for depressive symptoms, 4.31; suicidal ideation, 3.60; suicide attempts, 4.52), higher job insecurity (aPR: 1.52), and more workplace violence (past month aPR, 5.16; past year, 27.62). Depressive symptoms were linked to workplace violence, a negative climate, poor work-life balance, low support, and job application avoidance due to SGM identity.</div></div><div><h3>Conclusion</h3><div>SGM workers face disproportionate mental health challenges related to adverse working conditions and discrimination, highlighting the need for targeted protective strategies.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 331-339"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat Exposure and Fall Accidents in Construction: Informing Occupational Safety and Health Policy in Korea","authors":"Duck-Yeon Cho,&nbsp;Eun-Hi Choi,&nbsp;SungSook Lee","doi":"10.1016/j.shaw.2026.04.004","DOIUrl":"10.1016/j.shaw.2026.04.004","url":null,"abstract":"<div><h3>Background</h3><div>As the frequency and intensity of heat waves increase due to climate change, concerns regarding construction worker safety are growing. While research on heat-related illnesses is extensive, studies examining the impact of heat exposure on construction fall accidents—the leading cause of occupational fatalities—remain limited. This study investigated the relationship between daily maximum temperature and fall accidents.</div></div><div><h3>Methods</h3><div>We analyzed 42,220 fall accidents reported to the Republic of Korea Occupational Safety and Health Agency between 2015 and 2019. Daily maximum temperature and relative humidity data were linked to accident dates. The association between temperature and fall accidents was examined using negative binomial regression with a segmented term at the identified threshold. Exploratory quadratic and segmented regression models were used to identify the temperature threshold, and stratified analyses were conducted by age group and workplace size.</div></div><div><h3>Results</h3><div>A nonlinear relationship was observed, with fall accidents peaking at approximately 29°C, followed by a plateau. The segmented regression model incorporating a knot at 29°C demonstrated the highest explanatory power (R² = 0.894). Negative binomial regression confirmed significant overdispersion (α = 0.123) and indicated that each 1°C increase in temperature above 29°C was associated with a 16.7% increase in fall accident counts (incidence rate ratio = 1.167, 95% confidence interval: 1.145–1.188). This relationship was most pronounced among workers aged 50–59 years (R² = 0.573) and ≥60 years (R² = 0.593), as well as in workplaces with fewer than 50 employees (R² = 0.589–0.595).</div></div><div><h3>Conclusion</h3><div>Construction fall accidents were concentrated around a daily maximum temperature of 29°C, which is lower than the current heatwave advisory threshold (apparent temperature: 33°C). The stronger associations observed among older workers and in small-scale workplaces indicate that prioritized protection for these groups is necessary.</div></div>","PeriodicalId":56149,"journal":{"name":"Safety and Health at Work","volume":"17 3","pages":"Pages 365-374"},"PeriodicalIF":3.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149033265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}