A summary of included studies [Country, hazard categories, hazard types, sample size, study design, main findings, and references].

<p>The current systematic review follows PRISMA guidelines and focuses on occupational health research in the six GCC countries. A comprehensive English-language search was conducted in Scopus, PubMed, and Web of Science, yielding relevant studies published up to October 2023. Only primary research published in peer-reviewed journals was included, with a focus on physical, chemical, biological, and ergonomic factors in occupational health. Studies specifically related to COVID-19, psychosocial hazards, and gray literature were excluded. The review protocol was registered with PROSPERO, and the inclusion process involved two independent reviewers (K.A. and M.M.) between November 2023 and January 2024. S1 Table provides a detailed summary of the findings from the selected studies.</p> <p>(DOCX)</p>