Performance appraisal is the process of evaluating an employee's job performance and productivity. It involves establishing performance standards, measuring the employee's actual performance against those standards, and providing feedback. The key steps in the performance appraisal process are setting standards, measuring performance, comparing results, discussing performance, and taking corrective actions if needed. Common methods for performance appraisal include essays, checklists, rankings, and behavioral observation scales. The performance appraisal process aims to improve employee performance and development.