21st International symposium on shiftwork and working time: the 24/7 society--from chronobiology to practical life

On the studies of the regular character, factors, effects and perspectives of the working time dynamics in modern economy

The article examines a significant array of the scientific works devoted to different aspects of the working time dynamics. The conclusion is made that the main measure of this dynamics is the average number of hours worked per worker. This indicator can be used for analysis of all periods of labor activity including seniority. It is stated that the research on the problem shows a long-run trend of working time reduction. The works devoted to the topic also consider other factors affecting length of work: increase of labor productivity, influence of income effect and substitution effect on individual labor supply, motivation of employers, role of trade unions and collective bargaining, labor legislation. There are presented approaches to explanation of differences in the dynamics of working time in the USA and in West Europe. It is taken into account that the working time reduction during the past decades is characterized as one of the preconditions of pension reforms. There are considered works that contain analysis of the effects caused by the changes in working time length, including their impact on workers' health, work-life balance, gender inequality, unemployment rate, labor productivity, environment, perception the life as happy. The article shows a significant interest of researchers to perspectives of the working time dynamics in the context of analysis of J. M. Keynes's prediction about switch to 3-hour shifts by 2030. It is stated that the problem of perspectives of the working time dynamics is becoming one of the key issues in discussing the concept of Universal Basic Income. The article notes the attention of researchers to experiments on the working day reduction to 6 hours.

Sleep Problems and Workplace Violence: A Systematic Review and Meta-Analysis

Background: This systematic review with meta-analysis was carried out to study the relationship between workplace violence and sleep problems.

Methods: The PRISMA statement was used to conduct a systematic search of the literature on PubMed/MEDLINE, Scopus, Sociological abstract, DOAJ, Web of Science, and Google Scholar databases. Of the original number of 749 studies, 34 were included in the systematic review, and 7 in the meta-analysis.

Results: A total of 119,361 participants from 15 different countries took part in these studies which were published between 1999 and 2019. Significant heterogeneity was observed among the studies (I² = 96%). In a random-effects meta-analysis model, pooled odds ratio (OR) analysis revealed that there was a direct relationship between occupational exposure to violence and sleep problems (OR = 2.55; 95% CI = 1.77–3.66). According to the GRADE guidelines, the quality of evidence of the association was low.

Conclusions: The findings of this study demonstrate that occupational exposure to physical, verbal, or sexual violence is associated with sleep problems. Further research on the relationship between violence and sleep is needed so that appropriate measures can be taken to prevent violence and improve sleep hygiene in the workplace.

Trial Registration Number: PROSPERO International prospective register of systematic reviews (CRD42019124903) February 9, 2019.