85. An employee relations manager works on a 400 person call center that is part of a larger 7000-person organization. The center operates 24 hours a day, 7 days a week. The manager received an email from one of the call center employees, who indicated that he feels harassed and needs to speak with someone immediately. The HR manager makes plans to meet with the employee before his evening shift. The employee says that his supervisor treats him differently and is spying on him at work. He accuses her of logging onto his computer and making program changes and sending inappropriate changes and of sending inappropriate messages to other employees. When the HR manager asks for proof the employee says that the manager has deleted all evidence of her activities. In addition, he believes that at least six other employees, including the marketing manager, are trying to discredit him. The employee further accuses the marketing manager of making sex advance toward him. The HR manager says that she will investigate the charges. Her first steps to speak with the supervisor. The supervisor reports that there have been problems with the employee for some time, as the HR managers know from looking at his file. There have been several warnings, but his behavior is becoming more erratic, and other team members do not feel comfortable working with him. The supervisor wants to proceed with the termination of the employee. She is concerned that nothing happens, she will start to see high performing employees leaving the organization. The HR manager then mentions accusations of sexual harassment. The Supervisor is angry at being accused of harassment, threatens to obtain legal counsel if this investigation proceeds, and yells, "This employee is crazy!" as she storms out of the HR manager's office. The employee leaves work at the end of his shit gets into a car accident and sustains minor injuries. He alerts the HR manager that he will be away from work for 2 to 3 weeks and, as proof, forward a physician's note. This note accidentally includes a reference to possible mental illness. The employee also states that he believes the supervisor caused the accident.
How should the HR manager handle the supervisor's outburst?