合約農林助理員的主要職責包括 (a) 於郊野公園、特別地區和地質公園巡邏，以進行執法、管理和保護等職務，並協助相關法律程序； (b) 協助郊野公園、特別地區和地質公園的管理和運作； (c) 提高公眾的認知，並協助進行有關保護郊野公園、特別地區和地質公園的教育和義工活動； (d) 協助文書工作和備存記錄； (e) 協助於郊野公園、特別地區和地質公園進行實地調查和自然保育工作； (f) 協助進行宣傳活動；及 (g) 履行獲指派的其他職責。

The Contract Field Assistant is mainly deployed on (a) patrolling country parks, special areas and Geopark for law-enforcement, management and protection duties and assisting in related legal proceedings; (b) assisting in the management and operation of country parks, special areas and Geopark; (c) arousing public awareness and assisting in educational and volunteer programmes in relation to protecting country parks, special areas and Geopark; (d) assisting in clerical work and maintaining records; (e) assisting in field surveys and nature conservation works at country parks, special areas and Geopark; (f) assisting in publicity events; and (g) performing other duties as required.