合約農林督察的主要職責包括：(a) 協助管理植物標本室；(b) 統籌和執行植物標本室出版刊物的編輯和製作工作；(c) 協助管理／監察資料庫管理系統和專題網頁；(d) 協助鑑定植物及製作植物標本；(e) 協助有系統地為植物標本及其相關資料分類、編製索引和存檔；(f) 協助植物學家和公眾人士使用植物標本室設施；(g) 管理本地植物的相關記錄和資料，以及擬備相關技術文件； (h) 執行有關郊野自然保育法例；(i) 協助進行生態調查、整理調查數據及編寫報告；以及(j) 執行任何其他相關職務。

A Contract Field Officer is mainly deployed on (a) assisting in the management of the Herbarium; (b) coordinating and implementing editorial and production work of Herbarium publications; (c) assisting in administration / monitoring of the database management system and the thematic website; (d) assisting in plant identification and specimen preparation; (e) assisting in classifying, indexing and filing plant specimens and their relevant information; (f) assisting botanists and members of the public in the use of the Herbarium facilities; (g) keeping relevant records and information on the local flora and preparing relevant technical documents; (h) carrying out law enforcement duties connected with countryside conservation; (i) conducting ecological surveys, supervising the collection field data and preparing reports and (j) performing any other relevant duties.