AbstractTheoretically, executive stock options align managers’ and shareholders’ interests. However, previous studies have indicated that stock options may engender manager-shareholder conflicts (Jensen, 2005) and create incentives for earnings management (e.g. Jensen, Murphy and Wruck, 2004; Burns and Kedia, 2006; Efendi, Srivastava and Swanson, 2007). Therefore, this paper examines the implications of stock option grants on earnings management. In particular, we address the following question: Does stock options grant induce incentives for earnings management? Using a sample of 33 non-financial listed Portuguese firms-year from 2003 to 2010, we find that managers are more likely to engage in earnings management when they hold stock option...