Abstract It has come to attention that a risk-assessing organization, that will benchmark a company’s safety department, is imperative, following an increase in large-scale SOC-business project, construction of higher-raised buildings, development of underground space; all that have increase accident rates. Having faced problems that arise in firms that demand diversity, complexity and instantaneity, the purpose of the thesis is to arrive at efficient and practical problem-solving means. In order to solve the problems that would surface theoretically during an actual risk assessment, the state of the operation systems of the top five national construction firms having a hazard rate of 0.25 times less than the average rate have been analyzed, while a hierarchal recognition research of the employees who not only function at the operating level but are the practice subjects of a firm, has also been conducted, bringing the main text.

Abstract
 1. 서 론
 2. 연구동향 및 이론적 배경
  2.1 국내
  2.2 해외
 3. 위험성 평가의 주체별 설문분석
  3.1 설문 개요
  3.2 결과 분석
 4. 건설업 위험성 평가 모델 검토사항
  4.1 평가 항목 단순화
  4.2 등급제 도입을 통한 인증수준 차등관리
  4.3 소규모 사업장의 확대적용 방안
 5. 결 론
 5. References

• 조재환 | Jae-hwan cho Corresponding Author