Introduction: Each year, many people suffer from numerous injuries and damages in construction industry. Determination of factors that cause the most problems in a process is the most important step to improve the situation. Pareto chart can be used to explore factors causing most of the problems. The aim of this study was to survey construction accidents in Qom city using Pareto chart. Material and methods: In this descriptive-analytical study, all accidents related to construction industry registered during 2009-2012 in the social security organization of Qom city, were analyzed using Pareto chart and mini-tabs software. .Results: According to the results, 73.3% of accidents are due to objects and workforce being fallen. About 73.3% of the events occurred among 20-40 years old people. Hands and feet injuries comprised 53.4% of the accidents. Approximately, 61.8 percent of accident occurred in the first six months of the year. Moreover, the highest percentage of accidents was happened on Wednesday (19.4), Saturday (18.8), while Friday (8.4) and Thursday (10.5) had the lowest percentage of incidents. .Conclusions: Employing Pareto charts as a method for analyzing and identification of accident causes can have an effective role in the management of work-related accidents, proper allocation of funds and time.