We've had a couple of epileptics at my job. One of them was a temp guy who had worked the entire summer without a problem, we hired him again over Christmas, and just after lunch on the 23d of December, he just fell down and started having seizures. Ambulance was called and he got rolled out on a stretcher.
Another guy had seizures constantly when he did a specific task. It was probably just pure luck that he didn't manage to cut or stab himself or anyone else. Before I worked there though, I've only heard rumours...
Then there was one of the meat control assistants. We were running empty one day (we often do...) and he'd gone to put a better edge on his knives. He suddenly crashed and had seizures as well. Again it was pure luck that made sure he didn't injure himself. He was a bit upset that we had called an ambulance, since they took him to the hospital IIRC, and his driver's license got revoked...