A MAFOO is suing his bosses for allegedly letting a horse fall on him, ruining his riding career. Ip Yui-fai's injuries left him unable to ride, said the High Court writ filed yesterday, which is seeking $411,834 in damages from his former employer, the Hong Kong Riding Union. On October 24, 1995, Mr Ip was asked to exercise a horse in the Shek Kong riding school's sand paddock, the writ said. Colleagues Ah Fai and Ah Lam went with him, and Ah Fai tried to divide the paddock into four sections by tying two ropes across it, the writ said. But as he began tying the ropes, his horse became agitated and galloped into the ropes. 'The behaviour of Ah Fai's horse caused Mr Ip's horse to misbehave as well,' the writ said. When it tried to bolt, its legs became entangled in the ropes. The mafoo tripped over the ropes as he struggled to bring the animal under control, the writ claimed; he then fell and the horse fell on him. He was taken to Pok Oi Hospital with a fractured pelvis where he remained for six months. He claimed to suffer hip and back pain, and said he could no longer run or ride horses. His employers should never have allowed the crowded paddock to be split with ropes, the writ said, and the accident could have been avoided if mafoos had bridles.