Safety has once again emerged as a social issue due to the enforcement of the Serious Disasters Punishment Act and the occurrence of major disasters recently. As such, the safety culture related to unsafe human behavior is drawing attention as various discussions about the importance of safety and accident prevention are currently being undertaken. This study aims to determine whether changes in the level of safety culture in companies affect the accident rate. To this end, we targeted three workplaces in the same company in the domestic manufacturing industry, and 2,790 people were surveyed using DNV's Safety Will(ISRS-C version 4.0) for safety culture level diagnosis. The change in safety culture level and accident rate were compared and analyzed after carrying out safety culture level improvement activities for 5 years. As a result, the level of safety culture increased by 5.8 points, an overall improvement of 9.5%, while the total number of accidents decreased by 20%, from 5 to 4, indicating a general decreasing trend in accident occurrence. Results confirmed that the change in the level of safety culture affects the accident rate, and the improvement in the level of safety culture affects a reduction in accidents. Therefore, this study suggests that efforts to improve the level of safety culture within a company can be associated with accident reduction and accident prevention outcomes.

Abstract
1. 서 론
2. 연구방법
    2.1 연구 대상 및 기간
    2.2 안전문화 진단 시스템
3. 안전문화 수준향상 활동
4. 결 과
    4.1 안전문화 진단 결과
    4.2 안전문화 수준향상 활동 결과
    4.3 재해율 등의 비교 분석
5. 결 론
6. References

• 박진홍(동국대학교 대학원 안전공학과) | Jin-Hong Park (Department of Safety Engineering, Dongguk University)
• 우흥식(동국대학교 대학원 안전공학과) | Heung-Sik Woo (Department of Safety Engineering, Dongguk University) Corresponding Author