Giving employees a reason for discharge

Q. I own a small business with 27 employees. Last month I was forced to terminate one of my employees who had been caught stealing. Because I knew he was having some trouble at home, I agreed not to contest unemployment. However, I just received an e-mail from this former employee asking me tell to him, in writing, why I fired him. I cannot shake the feeling that I am being set up for something. After all, I told him during his termination meeting that he was being fired for stealing. Do I have to respond to this request? ...