I have suffered from depressive episodes for a number of years. About a month ago, I started taking a new antidepressant medication that causes me to feel really groggy when I wake up in the morning. After years without attendance problems, I've gotten to work late several times in the past month -- and now my supervisor has told me that I'll receive a written warning if I'm late again! Can he do this? I thought employers can't discriminate against employees who have disabilities.