Measuring occupational safety performance is one of the basic elements of the occupational health and safety management system. Occupational safety performance should be measured with the right methods and the results should be evaluated for ability of businesses to achieve their occupational safety goals. Accordingly in this study, it is aimed to examine the importance levels and weight values of occupational safety performance in port operations in specific to terminals. In the study, occupational safety performance indicators were obtained from national and international literature. Opinions of 7 A Class of occupational safety specialist working in Kocaeli Port Area were taken for the connection aspects, connection strength and significance between the obtained parameters. The data were analyzed using fuzzy DEMATEL and TOPSIS methods which are multi-criteria decision-making methods. In the study, it was determined that ‘‘the communication of health and safety information of employees ’’, ‘‘fulfillment of rights and responsibilities of employees’’, and ‘‘the quality of occupational health and safety training received by employee s’’, which is among the indicators of occupational safety performance, are in the group that affects. Also, the parameters of ‘‘employees' use of pe rsonal protective equipment’’ and ‘‘employees' participation in risk-reducing work practices’’ were included in the group affected indicators. In addition, with TOPSIS method, it was concluded that the most important impact indicators the occupational safety performance were the liquid cargo terminals.