factors associated with the severity of fatal accidents in construction workers

background: construction work (building houses, roads, workplaces, and repairing and maintaining infrastructures) is a dangerous land-based job. this includes many hazardous tasks and conditions such as working at the following conditions: height, excavation, noise, dust, power tools and equipment. construction work has been increased in developed and underdeveloped countries over the past few years. occupational fatalities have increased with an increase in this type of work. occupational fatalities refer to individuals who pass way while on the job or performing work related tasks. in the present study, to identify the factors, personal characteristics and work-related factors associated with fatal occupational mortality were assessed using data for tehran, iran, 2014-2016.   methods:  we conducted a retrospective study, using 967 postmortem reports from fatal occupational injuries collected through postmortem investigations during 2014-2016. a sampling frame of 967 postmortem reports from fatal occupational injuries was used to draw a total sample of 714 fatal construction accidents for this cross-sectional study. pearson χ2 test and kruskal-wallis tests were used for statistical analysis.   results: based on the results of this study, male gender (n=714; 100%), age range of 30-39 years (n=183; 25.6%), secondary educational level (n=273; 38.2%), being married (317; 44.4%), causal employee (n=389; 54.5%), unskilled performance (389; 54.5%), no insurance coverage (472; 66.1%), and   daytime duty work (287; 40.2%) were  identified as risk factors for fatality in the event of construction fatal  injury. a significant relationship was found between the type of injury and sociodemographic and work related variables.   conclusion: workers’ characteristics such as age, gender, experience, and educational background, and work related variables such as skill training, safety measurement, and close monitoring could be used to discriminate among different severity levels of occupational fatal accidents.