This dissertation examines the incentives of executives to distort firm earnings and the resulting economic costs of earnings distortion. I first investigate the effect of improvements in the detection of earnings distortion on CEO incentives in the presence of career concerns and endogenous contracting. The theoretical model incorporates both the short-term and career concern incentives of executives to increase earnings. Then I allow the signal of earnings distortion to exogenously change. The model leads to prediction that early in the career, there is less of an incentive to increase earnings through earnings distortion. The model is evaluated empirically using firms' restatements of earnings. I consider how the change in the...