A 68-year-old construction worker is in critical condition after being struck by an electric chain hoist at a Hong Kong government site undergoing drainage replacement works on Wednesday morning.The site on Yen Chow Street in Sham Shui Po is part of the government’s drainage pipe replacement project that spans from Tsuen Wan to West Kowloon. The project is expected to be completed by the end of this year.Police said they received a report from the site at 8.30am. One of the victim’s colleagues found him unconscious and bleeding from the head.The worker was sent to Princess Margaret Hospital in Kwai Chung for immediate surgery.Police, Labour Department and Drainage Services Department officers investigating the accident at the Yen Chow Street site in Sham Shui Po. Photo: Jelly TseThe Association for the Rights of Industrial Accident Victims said he was in critical condition.