The total number of analysed injury reports amounts to 1158, where 990 of those relate to injuries which occurred on construction sites in all fields of civil engineering (building construction, hydro-technical construction, and civil construction). Having in mind that the research is carried out for the needs of risk management of safety at work in building construction, the reports of injuries which relate to the observed field were selected. Moreover, out of 736 injury reports, 17 of them did not contain key data (description of the injury occurrence), which made it impossible to accurately determine the sources and causes of injuries. For the same reason, those were not included in the data base