Seven Common Accident Causes Consider this statistic: 80 out of every 100 accidents are the fault of the person involved in the incident. Unsafe Acts cause four times as many accidents & injuries as unsafe conditions. Accidents occur for many reasons. In most industries people tend to look for "things" to blame when an accident happens, because it's easier than looking for "root causes," such as those listed below. Consider the underlying accident causes described. Have you been guilty of any of these attitudes or behaviors? If so, you may have not been injured-but next time you may not be so lucky. ...