Performance is understood as the overall achievement of an employee throughout a specific amount of time, taking the employee's attitudes and behavior into account (Wang, He, & Zeng, 2011). Employee performance includes the specific behaviors an employee exhibits in order to achieve specific tasks and produces specific results within an organization to reach organizational objectives (Swanson & Gradous, 1986). Individual employee performance is vital, because it is said to have implications for outcomes on the firm level (Huselid, 1995).