Unless you have a union contract specifying that this is required, the answer is no; you do not have to allow this.
However, seeing as how this person sounds like a potentially problematic type of individual, I think you would be wise to have a human resource professional or a neutral member of management sit in on the review. That way it cannot turn into a he said/she said kind of situation. Everyone tends to be on his or her best behavior when a third party is observing.
Question added to topic Human Resources • September 12, 2008
I have an employee who is up for review and wants to have a non-employee witness, such as a spouse or friend. Am I legally obligated to allow this?
Penny is a seasoned human resources executive and consultant with over 25 years of diverse business experience in advising enterprise leaders on employment-related matters.