회계법인유형간 회계감사 등급별 투입인원 및 투입시간 차이분석

Abstract

In the present study, based on the additional data, the number of persons participating in an external audit, the content of audit, and the time invested in the audit required after the public announcement of the contents of external audits conducted became mandatory following the amendment of the Act on External Audit of Stock Companies. The average values were calculated using the additional data announced by the samples selected from among listed companies with the assets amounting to at least 100 billion won. A total of 100 such sample companies were selected and classified into those audited by Big4 accounting firms (N=42) and those audited by Non-Big4 accounting firms (N=58). Thereafter, hypotheses were formulated with regard to the differences in input personnel and invested time by audit rating between the classified sample companies and t-tests to test the hypotheses were performed. Based on the results of the t-tests, Hypothesis 1, according to which input audit personnel was expected to be different between Big4 and Non-Big4 accounting firms, was supported. For the differences in input audit personnel by audit participation rating as additional analyses, hypothesis 1 was adopted for quality control reviewers, registered accountants, and probationary accountants. Hypothesis 2, according to which it was predicted that invested audit time would be different between Big4 and Non-Big4 accounting firms, was supported by the data analysis. As for differences in invested audit time by rating, Hypothesis 2 was adopted for executive directors and registered accountants.