내부회계관리제도 감사와 감사시간 간의 관련성에 관한 연구

This study analyzes the impact of the introduction of internal control over financial reporting(ICFR) audits on auditors' audit hours(audit effort). To this end, the study established hypotheses that the introduction of ICFR audits positively affects total audit hours, interim review hours, and year-end audit hours. These hypotheses were tested through empirical analysis. Additionally, the hypotheses were re-examined separately for the KOSPI market and the KOSDAQ market to validate the research findings. The analysis revealed that the introduction of ICFR audits had a significant positive(+) impact on total audit hours, interim review hours, and year-end audit hours, with a 1% level of significance. In the rank-based analysis, only junior auditors showed a negative(-) effect on audit hours, while all other ranks demonstrated a robust positive(+) relationship. Furthermore, both the KOSPI market and the KOSDAQ market experienced increased time investment by experienced auditors, such as engagement partners and certified public accountants. Notably, the contribution of experts, including IT auditors, was strengthened during year-end audits. However, in the KOSDAQ market, junior auditors exhibited an insignificant negative (-) relationship, highlighting differences from the KOSPI. The findings suggest that the introduction of ICFR audits increases the time investment of experienced auditors and contributes to enhancing audit quality through the reinforcement of expertise.