The critical incident method is an objective performance appraisal method based on observable employee behaviors rather than subjective ratings. Managers document specific positive and negative critical incidents as they occur throughout the review period. These critical incidents, which focus on essential job duties, are then used to evaluate employee strengths and areas for improvement. By documenting incidents over time, the method avoids bias from recent events and provides documentation to support disciplinary actions if needed. It also gives managers opportunities to coach employees and identify process improvements through analysis of routinely problematic incidents.