Lack of Training
Cognitive Deficiencies
Personality - insecure and adopt one of the top three personality types: the paranoid or passive-aggressive, the high-likability floater, and the narcissist
Engaging in illegal and unethical behavior
Avoiding conflict and people problems
Demonstrating poor emotional control
Over-controlling
Demonstrating poor task performance
Poor planning, organization, and communication
Starting or passing on rumors or sharing confidential information
Procrastinating and not meeting time commitments
Failing to accommodate the personal needs of subordinates
Failing to nurture and manage talent