Final answer:
An effective appraisal system benefits employees, customers, supervisors, and coworkers by incorporating feedback from multiple sources in a 360-degree performance appraisal system.
Explanation:
An effective appraisal system benefits Employees, Customers, Supervisors, and Coworkers. By incorporating feedback from multiple sources such as supervisors, peers, customers, and subordinates in a 360-degree performance appraisal system, a more comprehensive evaluation can be achieved, leading to improved performance and development opportunities for employees.
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