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Kwonchul Ha 2 Articles
Original article
Occupational health risk assessment, exposure monitoring, and medical surveillance in the UK, EU, and US: a comparative analysis and implications for occupational disease prevention in Korea
Sangjun Choi, Kyong-Hui Lee, Kyung Ehi Zoh, Dong-Hee Koh, Won Kim, Kwonchul Ha, Dong-Uk Park
Ann Occup Environ Med 2026;e18.   Published online June 15, 2026
DOI: https://doi.org/10.35371/aoem.2026.38.e18    [Accepted]
AbstractAbstract PDF
Background
Although most countries maintain occupational safety and health (OSH) legislation to prevent occupational diseases, the legal codification and integration of occupational health risk assessment (HRA), exposure monitoring, and medical surveillance vary substantially across jurisdictions; therefore, this study compared the legal frameworks of Korea, the United Kingdom (UK), the European Union (EU) and United States (US) to examine the linkage among these elements, assess whether they support estimation of individual cumulative past exposure, and derive implications for improving occupational disease prevention in Korea.
Methods
This qualitative comparative legal analysis examined employer obligations related to quantitative exposure monitoring, HRA, and medical surveillance under the OSH systems of the UK, the EU, the US, and Korea. Primary statutes and subordinate regulations were systematically reviewed to assess how these elements are mandated, linked, and supported by record-keeping provisions enabling cumulative exposure estimation.
Results
The UK and the EU explicitly require HRA as a regulatory starting point and link exposure monitoring and medical surveillance to the outcomes of risk assessment, with targeted hazard-based provisions for intrinsically high-risk agents. The US adopts a hybrid approach, imposing mandatory monitoring and medical surveillance for high-hazard substances under 29 Code of Federal Regulations 1910 Subpart Z while relying on general statutory duties elsewhere. Korea applies broad list-based requirements for exposure monitoring and medical surveillance that are largely independent of HRA outcomes and do not include legally mandated variables necessary for systematic cumulative exposure estimation. In contrast, the UK, the EU, and partially the US provide legal mechanisms, including long-term record-keeping provisions, that enable reconstruction of individual cumulative occupational exposure.
Conclusions
Strengthening the integration of HRA, exposure monitoring, and medical surveillance—together with improved record-keeping structures that support cumulative exposure reconstruction—may contribute to more effective occupational disease prevention and long-term medical surveillance in Korea.

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Original Article
Occupational disease issues in high-tech industries of South Korea: analysis of governmental data on the semiconductor and display industries
Chungsik Yoon, Jinjoo Chung, Jongran Lee, Kwonchul Ha, Joseph DiGangi, Jeong-Ok Kong
Ann Occup Environ Med 2025;37:e6.   Published online March 24, 2025
DOI: https://doi.org/10.35371/aoem.2025.37.e6
AbstractAbstract AbstractAbstract in Korean PDF
Background
This study analyzed occupational diseases compensated through the government system in the Korean electronics industry and observed changes in the rationale for compensation.
Methods
Data from the Korea Workers’ Compensation and Welfare Service (KWCWS) from 2012 to 2023 were analyzed to examine occupational disease issues in South Korea's semiconductor and display industries.
Results
KWCWS received 174 occupational disease claims between 2012 and 2023, with 88 (50.6%) approved. The case of a 22-year-old semiconductor worker who died from leukemia has raised awareness and appears to be leading to more claims and higher approval rates. Cancer-related claims, particularly for breast and blood cancers, were the most common. Since 2018, the approval rate for occupational diseases has increased to 60%, which may have been influenced by the Supreme Court's Principle of Presumption of Occupational Diseases and the government’s reduction of the burden of proof. However, approval rates remain lower in small- and medium-sized enterprises (38.0%) compared to large corporations (55.6%), likely because of better documentation and unionization in the latter. The semiconductor industry had more claims and approvals than the LCD industry, primarily due to its longer operational history and greater chemical exposure.
Conclusions
In South Korea, the increasing approval rate of occupational diseases in the electronics industry from 2012 to 2023 appears to reflect changes in how causal relationships and occupational health policies have been implemented and this is likely due to stakeholder involvement and relevant legal decisions.
반도체 및 디스플레이 산업의 정부자료 분석으로 본 한국 첨단 산업에서의 직업병 이슈
목적
본 연구는 한국 전자산업에서 산재보험 보상 승인된 직업병을 분석하고 보상 근거의 변화를 관찰하였다.
방법
2012년부터 2023년까지 근로복지공단의 데이터를 분석하여 한국의 반도체 및 디스플레이 산업에서 직업병의 신청과 승인을 연도별, 업종별, 규모별로 분석하였다.
결과
2012년부터 2023년까지 근로복지공단에 접수된 직업병 산재보상 신청은 174건이고 이 중 88건(51%)이 승인되었다. 2007년 한 반도체 노동자의 백혈병 사망을 계기로 직업병에 대한 인식이 높아져, 산재보상 신청 건수가 증가하고 승인률도 높아진 것으로 추정된다. 신청 상병은 암, 특히 유방암과 혈액암이 가장 많았다. 대법원이 직업병 추정 원칙을 판시하고 정부가 입증 부담을 완화한 것이 2018년 이후 직업병 승인률을 60%까지 증가하는데 기여하였다. 그러나 중소기업(38%)의 승인률은 대기업(56%)에 비해 여전히 낮은데, 이는 대기업에서 기록을 더 잘 보관하고 노조 조직률도 더 높은 것이 영향을 주었을 것이다. 반도체 산업은 LCD 산업보다 산재 신청 건수와 승인 건수가 더 많은데, 이는 반도체 산업의 역사가 더 길며 화학물질 노출이 더 크기 때문으로 추정된다.
결론
연구 기간 동안 전자업체에서의 대부분 직업병은 혈액암과 유방암과 같은 암이었고 직업병 산재 승인의 증가는 이해관계자의 참여와 사회 이슈화, 유연해진 법원 판결, 산재보험제도 등이 큰 영향을 미쳤을 것이다.
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