It is a professional name for the person who checks the overall working of the employee. He or she is responsible for verifying if the employee’s performance meets the standard. During appraisals, the employers ask for the employee’s work performance from the reviewer, who is commonly a manager or leader of the team. According to managers’ feedback, the employers get bonuses or pay increments. It helps the company identify the skills in the particular department and take impactful action on them. It is crucial to ensure continuous learning and development in the company.