The construction industry is characterized by a high level of hazards to the life and health of employees and by a high accident rate. Knowledge relating to the course of the accident process plays a major role in work safety assessment and in accident prevention. On the basis of GUS reports and the EUROSTAT accident model a comprehensive general model of accident situation development has been developed. The model enables one to trace the different possible configurations of the events occurring in accident processes in the construction industry and to determine the most probable scenario of events. It is essential to define such scenarios in order to correctly specify the directions of preventive measures.