This study investigated the levels psychological trauma, mental health, and safety-related variables among workers who experienced fatal industrial accidents (FIA) at the manufacturing workplaces, where FIAs mainly occur. The data were collected from three workplaces in which FIA occurred (the accident groups) and one workplace which had no experience of FIA (the control group). The accident groups were classified according to IES-R classification criteria (high-risk and low-risk groups) as well as the level of FIA exposure (directly-exposed, indirectly-exposed, and unexposed groups) in order to compare the levels of psychological trauma, mental health, and safety-related variables among workers. In the results, the high-risk group showed higher severity of symptoms in all factors of KSCL-95 compared to the low-risk group. The directly-exposed group exhibited a higher degree of event impact than the indirectly-exposed and unexposed groups, and also reported more serious symptoms in KSCL-95. The result of frequency analysis, which considered the level of FIA exposure and the IES-R classification criteria, showed that the proportions of high-risk workers found in the directly-exposed and indirectly-exposed groups were higher than that in the unexposed group. In addition, regarding safety-related variables, the low-risk group had a higher level of safety practice than the high-risk group, and most of the sub-factors in IES-R and KSCL-95 were negatively related to safety-related variables. Despite the many limitations involved with field research, the result of this study is significant in that it proved that even general industrial workers suffer psychological trauma after experiencing FIAs.
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