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Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study

This study aims to clarify the relationships between length of overtime work and various stress responses using large-scale cross-sectional data of Japanese workers. This study’s participants are 59,021 Japanese workers in 117 companies. Data was collected by self-reporting questionnaire. The Brief...

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Autores principales: Kikuchi, Hiroyuki, Odagiri, Yuko, Ohya, Yumiko, Nakanishi, Yutaka, Shimomitsu, Teruichi, Theorell, Töres, Inoue, Shigeru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7053771/
https://www.ncbi.nlm.nih.gov/pubmed/32126094
http://dx.doi.org/10.1371/journal.pone.0229506
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author Kikuchi, Hiroyuki
Odagiri, Yuko
Ohya, Yumiko
Nakanishi, Yutaka
Shimomitsu, Teruichi
Theorell, Töres
Inoue, Shigeru
author_facet Kikuchi, Hiroyuki
Odagiri, Yuko
Ohya, Yumiko
Nakanishi, Yutaka
Shimomitsu, Teruichi
Theorell, Töres
Inoue, Shigeru
author_sort Kikuchi, Hiroyuki
collection PubMed
description This study aims to clarify the relationships between length of overtime work and various stress responses using large-scale cross-sectional data of Japanese workers. This study’s participants are 59,021 Japanese workers in 117 companies. Data was collected by self-reporting questionnaire. The Brief Job Stress Questionnaire was used to measure stress responses on six scales (i.e. “lack of vigor”, “irritability”, “fatigue”, “anxiety”, “depression”, and “somatic responses”). Length of overtime work hours were classified as 0–20, 21–30, 31–40, 41–50, 51–60, 61–70, 71–80, and >80 hours/month. Multiple linear regression analyses were used to examine the association of stress responses with overtime while adjusting all possible confounders. In result, workers with longer overtime showed significantly higher “irritability”, “fatigue”, “anxiety”, “depression”, and “somatic responses” for both genders (p-for-trend <0.001), however, length of overtime was negatively associated with “lack of vigor” among men (p-for-trend <0.001). Men with 61–80 hours of overtime showed high fatigue with high vigor at the same time. Length of overtime was linearly associated with various stress responses, except for “lack of vigor”. Length of overtime shows linear associations with various psychosomatic stress responses. However, "lack of vigor” was not consistently associated with overtime. Male workers with 61–80 hours of monthly overtime were more likely to feel vigorous than workers with shorter overtime. However, potential longterm effects of such extreme overtime should not be underestimated and must be paid attention to.
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spelling pubmed-70537712020-03-12 Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study Kikuchi, Hiroyuki Odagiri, Yuko Ohya, Yumiko Nakanishi, Yutaka Shimomitsu, Teruichi Theorell, Töres Inoue, Shigeru PLoS One Research Article This study aims to clarify the relationships between length of overtime work and various stress responses using large-scale cross-sectional data of Japanese workers. This study’s participants are 59,021 Japanese workers in 117 companies. Data was collected by self-reporting questionnaire. The Brief Job Stress Questionnaire was used to measure stress responses on six scales (i.e. “lack of vigor”, “irritability”, “fatigue”, “anxiety”, “depression”, and “somatic responses”). Length of overtime work hours were classified as 0–20, 21–30, 31–40, 41–50, 51–60, 61–70, 71–80, and >80 hours/month. Multiple linear regression analyses were used to examine the association of stress responses with overtime while adjusting all possible confounders. In result, workers with longer overtime showed significantly higher “irritability”, “fatigue”, “anxiety”, “depression”, and “somatic responses” for both genders (p-for-trend <0.001), however, length of overtime was negatively associated with “lack of vigor” among men (p-for-trend <0.001). Men with 61–80 hours of overtime showed high fatigue with high vigor at the same time. Length of overtime was linearly associated with various stress responses, except for “lack of vigor”. Length of overtime shows linear associations with various psychosomatic stress responses. However, "lack of vigor” was not consistently associated with overtime. Male workers with 61–80 hours of monthly overtime were more likely to feel vigorous than workers with shorter overtime. However, potential longterm effects of such extreme overtime should not be underestimated and must be paid attention to. Public Library of Science 2020-03-03 /pmc/articles/PMC7053771/ /pubmed/32126094 http://dx.doi.org/10.1371/journal.pone.0229506 Text en © 2020 Kikuchi et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Kikuchi, Hiroyuki
Odagiri, Yuko
Ohya, Yumiko
Nakanishi, Yutaka
Shimomitsu, Teruichi
Theorell, Töres
Inoue, Shigeru
Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study
title Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study
title_full Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study
title_fullStr Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study
title_full_unstemmed Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study
title_short Association of overtime work hours with various stress responses in 59,021 Japanese workers: Retrospective cross-sectional study
title_sort association of overtime work hours with various stress responses in 59,021 japanese workers: retrospective cross-sectional study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7053771/
https://www.ncbi.nlm.nih.gov/pubmed/32126094
http://dx.doi.org/10.1371/journal.pone.0229506
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