1. Lack of Training: Employees who are inadequately trained are more likely to make errors. 2. Fatigue: Overworked employees are prone to mistakes due to tiredness. 3. Complex Systems: Complicated processes and systems increase the likelihood of errors. 4. Distractions: Workplace distractions can divert attention from critical tasks. 5. Stress: High-stress environments can impair judgment and decision-making.