The three-level safety education and training for new employees shall be no less than 24 hours. The time of three-level safety training is not fixed, and there are differences between industries. According to the regulations, the safety training time for new employees of production and operation enterprises shall not be less than 24 hours before taking up their posts. Three-level safety training means that new employees of enterprises must undergo company-level safety training, department-level safety training and class and group-level safety training before taking up their posts. Mainly to cultivate employees' awareness of safe production, eliminate unsafe factors in the production process as much as possible, and effectively prevent the occurrence of safety accidents. For the three-level safety training, different units may be slightly different, but they all focus on safety production. Its training content mainly includes basic safety theory knowledge, laws and regulations related to safety production, case analysis of related safety accidents, industry-based safety production norms, fire safety knowledge and so on.