主要的職責包括： (a) 協助開展實地考察，包括攜帶沉重設備和安排實施相關的安全措施，或須於船上工作； (b) 協助有毒物質監測工作，包括收集有關樣本； (c) 執行簡單的化驗室工作，包括清洗樣本盛器等工作； (d) 執行一般文書工作，包括資料輸入； (e) 執行戶外工作，如文件派遞和工地運作；及 (f) 或須不定時工作。

The main duties include: (a) To assist in carrying out fieldwork inspection including carrying bulky fieldwork equipment items and taking care the safety measures for public during field visit, and may be required to work on vessel; (b) To assist in toxic substances monitoring work including collection of relevant samples; (c) To perform laboratory work including cleaning sample containers, etc.; (d) To perform general clerical work including data input; (e) To perform outdoor duties such as dispatch of documents and site operation; and (f) May be required to work irregular hours.