Dose — response relationship between noise exposure and the risk of occupational injury Jin-Ha Yoon1,2,3, Jeong-Suk Hong3,4, Jaehoon Roh1,2,3, Chi-Nyon Kim1,3, Jong-Uk Won1,2,3 The Institute for Occupational Health, Yonsei University College of Medicine, Seoul, 2Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, 3Graduate School of Public Health, Yonsei University College of Medicine, Seoul, 4 Korea Occupational Safety and Health Agency, Gyeonggi Bukbu Area Office, Gyeonggi Province, Korea 1

Abstract Many workers worldwide experience fatality and disability caused by occupational injuries. This study examined the relationship between noise exposure and occupational injuries at factories in Korea. A total of 1790 factories located in northern Gyeonggi Province, Korea was evaluated. The time-weighted average levels of dust and noise exposure were taken from Workplace Exposure Assessment data. Apart occupational injuries, sports events, traffic accidents, and other accidents occurring outside workplaces were excluded. The incidences of occupational injury in each factory were calculated by data from the Korea Workers’ Compensation and Welfare Services. Workplaces were classified according to the incidence of any occupational injuries (incident or nonincident workplaces, respectively). Workplace dust exposure was classified as