I used to work (when I was well enough to work) with a young man who had cerebral palsy. He was a good worker, but lost his balance sometimes which meant that he fell over at work. We were doing landscape gardening and maintenance - a physically hard job when done outdoors all day. He was fine, and able to keep up. He was not sick, but quite fit and strong with plenty of stamina, and he was a friendly and popular worker.. He did not use machinery, though as his balance and coordination problems meant that he was not safe to use dangerous tools.