Wood harvesting operations, especially motor-manual cutting and manufacturing, is a high-risk work process where the chainsaw, along with the variable factors of the working environment, is a key and constant source of danger. Based on the above, the goal of the diploma thesis is to evaluate, analyse and compare selected indicators of work ability (index of work ability, key elements of work technique and musculoskeletal disorders symptoms) among chainsaw workers who work in Central Croatia, and are employed by the company Hrvatske šume Ltd. or at a private forestry contractor. The three-stage method, which includes the definition of the target sample, the creation and administration of the questionnaire and data analysis, was used in the evaluation of the selected indicators of the work ability of chainsaw workers in Central Croatia. The field part of ''face-to-face'' data collection was conducted in the first quarter of 2022. Descriptive and inferential statistics techniques were used for data analysis. As part of the discussion and conclusions, as a recommendation for the further improvement of the safety management system in the Croatian forestry sector, it is emphasized the introduction and improvement of the safety culture at the workplace through specific additional training programs for workers with the aim of improving work techniques, the development of good two-way communication, the adoption of a system of incentives/rewards for good safety behaviour of workers, etc