Association between the course of hypnotics treatment for insomnia and work functioning impairment in Japanese workers

Self-reported symptoms or activity limitations and job loss during the COVID-19 pandemic in Japan

BACKGROUND

Previous studies have reported the impact of a diagnosed disease or self-perceived poor overall health on job loss. However, evidence is lacking on which self-reported symptoms or activity limitations are related to job loss, especially during the coronavirus disease 2019 (COVID-19) pandemic.

AIMS

We investigated whether self-reported symptoms or activity limitations were correlated with the occurrence of job loss within 1 year during the COVID-19 pandemic.

METHODS

In this prospective cohort study, we used questionnaires administered to Japanese workers. A baseline survey conducted in December 2020 was used to determine workers' symptoms or activity limitations. Experiencing job loss since the baseline survey was ascertained with a follow-up survey in December 2021. The odds ratios of experiencing job loss were estimated using a logistic model with adjusted covariates.

RESULTS

Men (n = 8682) accounted for 58% of the total sample (n = 14 910), and the respondent mean age was 48.2 years. Multivariate analysis showed that workers with pain-related problems; limited physical movement and mobility; fatigue, loss of strength or appetite, fever, dizziness and moodiness; mental health problems; sleep-related problems or eye-related matters had a greater probability of experiencing job loss owing to health reasons.

CONCLUSIONS

Several self-reported symptoms or activity limitations can lead to job loss after 1 year, indicating that prevention and resolution of symptoms or activity limitations are important to reduce workers' risk of losing their jobs.

Factors Associated with Workplace Injuries Among Shift Work Nurses: A Cross-Sectional Study in an Ecuadorian Sample

Background/Objectives: Shift work schedules and mental and physical workloads affect the sleep homeostasis of nurses, increasing the risk of occupational injuries. This study aimed to investigate the relationship between sleep disturbances caused by shift schedules and the occurrence of needlestick and sharps injuries (NSIs) among nurses, considering significant worker and occupational factors. Methods: A total of 348 nurses from five hospitals of Santiago de Guayaquil, Ecuador, participated in this cross-sectional survey. Data on sociodemographic and occupational characteristics, work schedules, and NSI incidents during the previous six months were collected. Emotional status, sleepiness, and insomnia symptoms were assessed using validated questionnaires. Additionally, nurses with night shifts (fixed or rotating) were specifically assessed to estimate the relationship between NSIs and insomnia or sleepiness symptoms related to these types of shift work using logistic regression analyses. Results: Nurses whose schedule included night shifts showed a higher prevalence of NSIs than those with other shifts (33.2% vs. 29.0%; p < 0.05). High levels of depression, anxiety, and stress were associated with having had an NSI in the previous six months. Logistic regression showed that female sex (adjusted odds ratio, aOR 4.62, 95% CI: 1.65-12.97), less experience in the current clinical setting (aOR 3.12, 95% CI: 1.46-6.57), the use of psychotropic drugs (aOR 4.46, 95% CI: 1.51-13.17), and insomnia and sleepiness symptoms due to shift work (aOR 2.61, 95% CI: 1.15-5.91) increased NSI risk among nurses with night shifts. Conclusions: There is an acute need to explore the complex relationship between sleep troubles linked to shift work schedules, occupational factors, and the risk of occupational injuries and propose preventive strategies for enhancing nurses' sleep health and workplace safety.

Presenteeism and Traffic Accident Among Taxi Drivers: A Prospective Cohort Study in Japan

Background

Traffic accidents involving professional drivers have serious societal repercussions. Unique occupational stressors and health risks exacerbate the likelihood of traffic accidents among professional drivers. This study explores the association between presenteeism-impaired work performance due to working while unwell-and traffic accident risk among professional taxi drivers in Japan.

Methods

A prospective cohort study was conducted from June 2022 to February 2023, involving taxi drivers from a single company in Fukuoka Prefecture, Japan. Presenteeism was assessed using the Work Functioning Impairment Scale (WFun). Primary outcome involved the number of self-reported minor traffic accidents. The incidence rate ratio (IRR) of minor traffic accident occurrences was estimated using a Poisson regression analysis, adjusted for confounders including sex, age, and driving experience.

Results

Of 838 targeted drivers, 435 were included in the analysis. Higher baseline work functioning impairment was associated with a significant trend of increasing IRR of minor traffic accidents (p for trend = 0.045). A dose-response relationship was seen between the degree of presenteeism and incidence rate of minor traffic accidents.

Conclusion

Higher levels of presenteeism were associated with an increased risk of traffic accidents among taxi drivers. The findings underscore the need for socio-economic support and prioritized health management to mitigate traffic accident risk among professional drivers. This study highlights the importance of managing non-critical health issues alongside serious health conditions for safer driving practices among professional drivers in Japan.

Economic Impact of Insufficient and Disturbed Sleep in the Workplace

OBJECTIVE

Insufficient and disturbed sleep are associated with significant morbidity among working-age adults. Poor sleep results in negative health outcomes and increases economic costs to employers. The current systematic review surveyed the peer-reviewed scientific literature and aggregated scientific evidence of sleep-related economic burdens borne by employers.

METHODS

A systematic review was performed to identify peer-reviewed, English language studies evaluating the economic impact of insufficient and disturbed sleep among adult employee populations. An exhaustive literature search was performed using keywords related to sleep, economics, and the workplace. Included were scientific studies (randomized controlled trials, cohort and case control studies, cross-sectional and longitudinal studies) examining specific employee populations with relevant sleep and economic outcomes. Each included study was evaluated for risk of bias and relevant data was extracted and summarized.

RESULTS

Sleep problems among employee populations are associated with worsened workplace outcomes, such as presenteeism, absenteeism, and accidents. Sleep problems also increased costs to employers, ranging from US$322 to US$1967 per employee. Interventions to improve sleep, such as the use of blue-light filtering glasses, strategic shift scheduling, and targeted interventions to treat insomnia, may improve workplace outcomes and reduce costs.

CONCLUSIONS

This review synthesizes the existing data regarding the negative impacts of insufficient and disturbed sleep on the workplace, suggesting that employers have an economic stake in their employees' sleep.

TRIAL REGISTRATION

PROSPERO: CRD42021224212.

Long COVID occurrence in COVID-19 survivors

This cross-sectional study aimed to investigate the post-acute consequences of COVID-19. We conducted a self-administered questionnaire survey on sequelae, psychological distress (K6), impairments in work performance (WFun), and COVID-19-related experiences of stigma and discrimination in two designated COVID-19 hospitals in Hiroshima Prefecture, Japan, between August 2020 and March 2021. The prevalence of sequelae was calculated by age and COVID-19 severity. Factors independently associated with sequelae or psychological distress were identified using logistic regression analysis. Among 127 patients who had recovered from COVID-19, 52.0% had persistent symptoms at a median of 29 days [IQR 23-128] after COVID-19 onset. Among patients with mild COVID-19, 49.5% had sequelae. The most frequent symptoms were olfactory disorders (15.0%), taste disorders (14.2%), and cough (14.2%). Multivariate analysis showed that age was an independent risk factor for sequelae (adjusted odds ratios [AOR] for ≥ 60 years vs. < 40 years 3.63, p = 0.0165). Possible psychological distress was noted in 30.7% (17.9% of males and 45.0% of females). Female sex and the presence of sequelae were independent risk factors for psychological distress. Of all participants, 29.1% had possible impairments in work performance. Experiences of stigma and discrimination were reported by 43.3% of participants. This study revealed the significant impacts of Long COVID on health in local communities. A large-scale, long-term cohort study is desired.

Association Between the Physical Work Environment and Work Functioning Impairment While Working From Home Under the COVID-19 Pandemic in Japanese Workers

OBJECTIVE

To examine the relationship between the physical work environment and work function while working from home (WFH).

METHODS

A cross-sectional study was conducted. Data from 5760 workers who worked from home at least 1 day a month were analyzed. The physical work environment while WFH was used as an exposure factor. The presence of work functioning impairment was measured using Work Functioning impairment Scale (WFun). Mixed-effects logistic regression was used with the prefecture of residence as a random effect.

RESULTS

Work functioning impairment was significantly associated with a "No" response to recommended environments. The highest odds ratio (OR) of work functioning impairment was associated with a "No" response to "There is enough light to do my work" (adjusted odds ratio [aOR]: 2.02, 95% confidence interval [CI]: 1.73 to 2.35, P < 0.01).

CONCLUSIONS

Improving work environments may prevent negative health effects and improve productivity while WFH.