合約農林助理員主要負責執行以下職務：(a)進行全港野生牛隻捕捉行動及救援工作；(b)照顧、餵飼、處理、管束及運送野生牛隻及水牛，以便進行絕育手術、施加藥物或作其他治療，並協助進行人道毀滅及遷移牛隻；(c)設計、建造及維修養牛場的設施及設備；(d)維修及清潔安置動物的設施及動物居所；(e)駕駛部門自用車／租用車輛；以及(f)履行獲其上司指派的任何其他職務。

The Contract Field Assistant is mainly deployed on - (a) territory-wide feral cattle catching operation and rescue duties; (b) caring, feeding, handling, restraining and delivering of feral cattle and buffalo for neutering, administration of medicines or other agents, assisting with humane destruction and relocation (c) designing, constructing and repairing of cattle farm facilities and equipment; (e) maintaining and cleansing of animal holding facilities and animal houses; (f) driving a departmental vehicle/hired vehicle; and (g) performing any other duties as directed by his/her supervisors.