In this master thesis we have analyzed workplace accidents in the period 2006-2013 for concessionary forestry companies who carry out work in state forests in Slovenia. The aim of research is to determine the number of accidents and accident frequency and to analyze various factors that have influenced in occurrence of accidents. In total we analyzed 948 workplace accidents, which were collected and forwarded by the nine concessionary companies through international forms for workplace accidents (ER-8). Results showed, that the number of accidents and the production frequency of accidents over the analyzed period was reduced from 109 to 97 accidents, or 1.7 to 1.3 accident / 10,000 m3, while accident frequency in the past two years was reduced under 10 %. In the analyzed period 90 % of accidents happened to forest production workers at work in the forests. Logging and production with a chainsaw and tractor skidding are still the most dangerous forestry activities by number of accidents. Maximum production frequency of accidents has been identified in the logging and processing with a chainsaw (1.1 accident / 10,000 m3) and the cableway skidding (0.9 accidents / 10,000 m3). Focal points of accidents including place of accident, method of working, forestry activities, sources and causes of accident compared to the previously analyzed period (1993-2005) remain similar. Measures to reduce the number of accidents and their consequences in the future must be based on the training of workers for safe work in the forest, appropriate personal protective equipment and properly regulated work conditions for forest workers.