Associate Safety Professional Practice Exam

Heinrich's ratio of no injury accidents to minor injuries to major injuries is what?

1. 100-10-1

2. 300-29-1

3. 50-20-1

4. 200-15-1

The correct answer is: 300-29-1

Heinrich's ratio, often associated with safety management and accident prevention, suggests a hierarchy of events leading to injuries in the workplace. According to Heinrich's theory, for every major injury, there are numerous minor injuries and an even larger number of no-injury incidents, illustrating the potential for serious accidents stemming from many lesser events. The widely recognized ratio is 300 to 29 to 1. This means that for every major injury (1), there are approximately 29 minor injuries and about 300 incidents that occur without injury. This reflects the underlying principle that addressing minor injuries and near misses can significantly reduce the likelihood of severe accidents. By identifying and managing the factors leading to these lesser incidents, organizations can create safer working environments. The ratio highlights the need for proactive safety measures and the understanding that a high number of no-injury incidents can be indicative of a larger issue that, if left unaddressed, might lead to more serious accidents.