In the case of firm as a subject to investigation of irregular practices, earning management is conducted to keep away from a negative regulatory action, which includes either persuading the government not to implement unfavourable judgement to the firm or exluding the negative effects of an undesired regulatory change. (Cahan, 1992). In addition, earning management will decrease the financial statement’s quality (Kinney et al., 2004). As earnings quality is the inverse of earnings management, firms with good earnings quality will have low earnings management and vice versa (Yip et al., 2011).