Within a 24-hour rhythm the first 2 hours,after starting work is the psychologically psychologically high risk period for the workers at a young age,with low literacy,and of low degree of seniority are more likely to have fatal accidents.

• 一天24时昼夜节律中白班开工后1-2小时是员工事故行为心理高发时段。 市场经济条件下低年龄、低工龄、低文化等“三低”员工是事故高暴露群体。