Are public relations important for your company? Imagine this story hitting the public:
"I used to work for xyz company. 6 months ago, I got very sick. I was hospitalized for 4 days. It was discovered that I had a chronic illness that very well may cut my life short. As soon as I got out of the hospital, I went returned to my job. I made my employer aware of my chronic illness. Just a few weeks ago, I had to be rushed to the hospital. There, I spent 7 days drifting in and out of consciousness, IVs inserted into my arms, tubes stuck up my nose providing needed oxygen. The Xyz company was completely aware that I was hospitalized. Before I was discharged from the hospital, they fired me for being sick..."
VERY bad public relations (if such are necessary for your company.)
edit: (oh yeah, I know, that would only be one side of the story. However, that's the side of the story the public would hear.)