A Hybrid Approach to Identifying Key Indicators for Enhancing Occupational Health and Safety Systems in Small Window- and Door-Fitting Companies

Workplace injuries are a significant issue in the construction industry. The efficiency and effectiveness of the OHS system can be analysed using safety indicators. This paper presents a methodological procedure for the selection and ranking of indicators to improve the OHS system. The procedure consists of two phases: preparatory and execution. In the preparatory phase, a hierarchical structure was proposed, consisting of three aspects, four factors, and thirty-nine indicators. Additionally, experts were selected. In the execution phase, experts applied the weighted Borda method to select five key indicators for each factor. The selected indicators were then compared and ranked using the group fuzzy analytic hierarchy process (FAHP). The influence of experts in the selection and ranking of indicators was determined according to their previous experience. The procedure was applied to analyse OHS systems in small window- and door-fitting companies. Among the indicators, experts highlighted the efficiency of OHS resource management, the frequency of coordinating activities with contractors, the communication capacity of the workers, the analysis of the results of external OHS controls, the number of external funds for OHS system improvements as well as the number and assessment of incidents. Furthermore, ten scenarios were analysed with varying values of factor weight values. The scenarios demonstrated that the highlighted indicators were consistently ranked among the top ten indicators.