Over 16 hours. According to "People's Republic of China (PRC) Law on Work Safety" and "Regulations on Safety Training for Enterprise Employees", employees need to receive safety training 30 days after leaving their posts. The training time varies from enterprise to enterprise and from post to post: the safety training time of the principal responsible person and safety management personnel of the enterprise shall not be less than 48 hours, the safety training time of special operators shall not be less than 24 hours, and the safety training time of other employees shall not be less than 16 hours.