公司揭露重大內部控制缺失與應計品質之關聯性研究－以日本企業為例

Abstract

本研究以日本之上市櫃公司為研究對象，探討在2006年發布的金融商品交易法中，有關內部控制規範下，重大內部控制缺失對應計品質之影響。本研究並驗證，改善前一年度重大內部控制缺失的公司，是否會對其應計品質產生影響。首先，實證結果顯示，揭露重大內部控制缺失的公司較沒有揭露重大內控缺失的公司，有顯著較多的絕對值、正、負異常應計數。表示公司重大內部控制缺失愈多，其應計品質愈差。第二，本研究發現，改善前一年度重大內部控制缺失的公司，較沒有改善其內控問題的公司，有較佳的應計品質。表示公司改善重大內部控制缺失後，異常應計數會隨之減少，進而提升財務報導的品質。

This study investigates the relationship between internal control weaknesses and accrual quality by using a sample of Japanese listed firms that disclose material weaknesses in internal control under the 2006 Financial Instruments and Exchange Law (FIEL). I also examine whether the remediation of material weaknesses in internal control has the effect on accrual quality. First, the empirical results show that firms reporting material internal control weaknesses have significantly larger absolute, positive, and negative abnormal accruals compared to control firms. It implies that the more material internal control weaknesses, the lower accrual quality. Second, I document that firms remediate their previous material weaknesses in internal control exhibit higher quality accruals relative to firms failing to remediate their internal control problems. It suggests that the remediation of internal control weaknesses can reduce abnormal accruals, help improve the quality of financial reporting.