Annals of Occupational and Environmental Medicine

Original Article

Exploring the association between non-regular employment and adverse birth outcomes: an analysis of national data in Japan: Tasuku Okui, Naoki Nakashima; Ann Occup Environ Med 2024;36:e6. Published online March 18, 2024; DOI: https://doi.org/10.35371/aoem.2024.36.e6; Warning: func_get_arg(): Argument 9 not passed to function in /home/virtual/aoem/journal/func/include.function.php on line 1719
Correction in: https://doi.org/

Background

As few studies have explored the association between non-regular or precarious employment in parents and adverse birth outcomes, this study aimed to investigate this association using national data in Japan.

Methods

This study utilized the census data from 2020 and birth data from the vital statistics in 2021 and 2022 in the analysis. Adverse birth outcomes, including preterm birth, term low birth weight (TLBW), and small-for-gestational-age, were examined. Data linkage was conducted between birth data and census data to link parental employment statuses and educational attainments with birth data. Rates of adverse birth outcomes were calculated for each parental employment status. Additionally, regression analysis was used to determine adjusted risk ratios (RRs) of parental employment statuses for each birth outcome.

Results

After data linkage, 334,110 birth records were included in the statistical analysis. Rates for non-regular workers were consistently higher than those for regular workers across all adverse birth outcomes for maternal employment status. Results of regression analyses indicated that the risks of preterm birth for non-regular workers were statistically significantly higher than those for regular workers, both in mothers and fathers with a RR (95% confidence intervals [CIs]) of 1.053 (1.004–1.104) and 1.142 (1.032–1.264), respectively. Furthermore, the risk of TLBW birth for non-regular workers was statistically significantly higher than that for regular workers in fathers (RR [95% CI]: 1.092 [1.043–1.143]).

Conclusions

Our findings demonstrate that non-regular workers have a higher risk of some adverse birth outcomes compared to regular workers.

Citations

Citations to this article as recorded by

Assisted reproductive technology in Japan: A summary report for 2022 by the Ethics Committee of the Japan Society of Obstetrics and Gynecology
Yukiko Katagiri, Seung Chik Jwa, Akira Kuwahara, Takeshi Iwasa, Masanori Ono, Keiichi Kato, Hiroshi Kishi, Yoshimitsu Kuwabara, Fuminori Taniguchi, Miyuki Harada, Akira Iwase, Norihiro Sugino
Reproductive Medicine and Biology.2024;[Epub] CrossRef

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Research Article

Work-related Musculoskeletal Disorders in Korea and Japan: A Comparative Description: Eun-A Kim, Minori Nakata; Ann Occup Environ Med 2014;26:17. Published online June 24, 2014; DOI: https://doi.org/10.1186/2052-4374-26-17

Abstract PDF

Objectives

Work related Musculoskeletal disorders (WMSD) is one of the most important problem in occupational health system of Korea and Japan, where the OHS system developed in similar socio-cultural environment. This study compared WMSD in Korea and Japan to review similarities and differences in their historical background, and development of prevention policies.

Methods

Scientific articles, government reports, and related official and non-official statistics on WMSD since the 1960s in Japan and Korea were reviewed.

Results

The historical background and basic structure of the compensation system in Korea and Japan largely overlapped. The issuing of WMSD in both countries appeared as upper limb disorder (ULD), named occupational cervicobrachial diseases (OCD) in Japan, and neck-shoulder-arm syndrome (NSA) 30 years later in Korea, following the change from an industrial structure to automated office work. Both countries developed manuals for diagnosis, guidelines for workplace management, and prevention policies. At present, compensation cases per covered insurers for WMSD are higher in Korea than in Japan, due to the social welfare system and cultural environment. Prevention policies in Korea are enforced more strongly with punitive measures than in Japan. In contrast, the Japanese system requires autonomous effort toward risk control and management, focusing on specific risky processes.

Conclusions

WMSD in Korea and Japan have a similar history of identification and compensation structure, yet different compensation proportions per covered insurer and prevention policies. Follow-up study with international cooperation is necessary to improve both systems.

Citations

Citations to this article as recorded by

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653 View
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12 Crossref

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