Publication Type

Conference Paper

Publication Date



In this study, we examine whether and how internal control over financial reporting affects firm operational efficiency. We find that operational efficiency, derived from the frontier analysis, is significantly lower among firms with material weaknesses in internal control relative to firms without such weaknesses. We document some evidence suggesting that effective internal control leads to greater operational efficiency through reducing the likelihood of misappropriation of corporate resources and through enhancing the quality of internal reports for decision making. We also document that smaller firms benefit more from having effective internal control in terms of operational efficiency. In addition, we find that the market appears to understand the effect of ineffective internal control on operational efficiency: within firms with internal control materialweakness, those with more negative market reaction experience a larger deterioration in operational efficiency. Lastly, we find that the firms that remediate their material weaknesses subsequently experience an improvement in operating performance and stock returns, and this effect is mainly driven by the improvement in operational efficiency. Overall, our study extends the literature by presenting systematic evidence on the effects of effective internal control on operational efficiency and firm performance.


Internal control, operational efficiency, Sarbanes-Oxley Act


Accounting | Corporate Finance

Research Areas

Corporate Reporting and Disclosure; Financial Performance Analysis


European Accounting Association Annual Congress 2015, April 28-30

City or Country


Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.


Also presented at Canadian Academic Accounting Association Annual Conference 2015, May 28-31; Four School Conference 2014, October, Singapore