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、香港地質公園、香港濕地公園和特別地區；負責動植物、瀕危物種、地質及景觀的存護工作，包括執法、教育和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；以及在各有關範疇進行應用研究。 (註：可能被調派往其他局／部門；須不定時工作或輪班工作，以執行遇有山火、颱風或其他自然災難時的緊急職務；以及在新界工作。)

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