助理貿易管制主任的主要職責包括： (a) 執行與保障消費者權益（包括產品安全、商品說明及公平貿易）、產地來源證、就禁運物品申領的進出口許可證，以及進出口報關事宜等相關的法例； (b) 就工廠登記及根據簽發產地來源證制度提出的有關申請，巡查處所及營運單位； (c) 在各出入境管制站及／或其他處所檢查進口或出口貨物； (d) 查核進出口報關單，並評定進出口貨物的價值，以徵收報關費及成衣業訓練附加稅； (e) 執行金錢服務經營者的發牌及規管工作，包括審查有關機構是否遵從規定，以打擊洗錢及恐怖分子資金籌集；及 (f) 根據相關法例執行調查工作。 （註：助理貿易管制主任主要在戶外工作，並且可能須不定時工作，或輪班當值及／或執行隨時候召職務，以及採取拘捕行動並在法庭上作供。）

An Assistant Trade Controls Officer is mainly deployed on - (a) enforcing legislation in relation to consumer protection, including product safety, trade descriptions and fair trading; certificates of origin, import and export licences covering prohibited articles, and import and export declarations; (b) inspecting premises and operations in relation to factory registration and applications for certificates under the Certification of Origin System; (c) conducting cargo examination on goods imported or exported at entry and exit control points and/or other premises; (d) verifying import/export declarations and assessing values of import/export consignments for collection of declaration charges and clothing industry training levy; (e) carrying out licensing and regulatory work on money service operators, including compliance inspection for the purposes of anti-money laundering and counter-terrorist financing; and (f) conducting investigation under the relevant legislation. (Note: An Assistant Trade Controls Officer is mainly engaged in outdoor duties, may be required to work in irregular hours, or to perform shifts and/or on-call duties, and make arrest and give evidence in court.)