林務主任主要被調派執行林木及植物管理工作；策劃、管理、發展及保護郊野公園、香港國家地質公園、香港濕地公園和特別地區；負責動植物、瀕危物種及景觀的存護工作，包括執法、教育、提供意見及生態學的基線研究；評估及監察環境影響評估工作的生態部分；及在各有關範疇進行應用研究。 (註：可能須不定時工作或輪班工作、以及執行遇有山火、颱風或其他自然災難時的緊急職務。)

A Forestry Officer is mainly deployed on performing forestry and vegetation management work; planning, managing, developing and protecting Country Parks, Hong Kong National Geopark, Hong Kong Wetland Park and Special Areas; undertaking fauna, flora, endangered species and landscape conservation work, including law enforcement, education, advisory duties, and ecological baseline studies; assessing and monitoring ecological aspect of environmental impact assessment process; and undertaking applied research in various discipline. (Note : May be required to work irregular hours, shift duties and emergency duties related to hill fire, typhoon, or other natural disasters.)