Supervisors need to watch out for the signs and symptoms of an employee being unfit for work. It may be difficult to determine whether the employee is unfit for work due to alcohol or drugs, or some other reason such as a medical condition. Therefore, supervisors are encouraged not to focus on why the employee is unfit but the actual signs and symptoms, and how they determine if the person is unfit for work. This will also assist in minimising conflict and managing the situation in a calm and professional manner.