高級一等合作事業主任主要負責根據香港法例第33章及第119章執行管理、監督及管制合作社和儲蓄互助社的職務，以及督導合作社及儲蓄互助社管理組的職務。他／她須負責：(a) 按照核准的政策，管理、規劃、監督和管制合作社及儲蓄互助社管理組；(b)應用和執行《合作社條例》及《儲蓄互助社條例》；(c) 如有需要，向合作社及儲蓄互助社管理組人員、各合作社及儲蓄互助社人員，以及其他政府部門，就與合作社和儲蓄互助社相關的法律、章程、原則和做法，以及會計方式提供意見及指導；(d) 為合作社及儲蓄互助社、其章程及對其章程作出的任何修訂進行註冊；(e) 調解和解決合作社社員之間、委員與所屬委員會之間，或社團之間的糾紛；以及(f) 為合作社及儲蓄互助社進行清盤工作。

A Senior Co-operative Officer I is mainly deployed on the management, supervision and control of co-operative societies and credit unions in accordance with Cap. 33 and Cap. 119 and on taking charge of the Co-operative and Credit Union Section. He/She is responsible for (a) management, planning, supervision and control of the Co-operative and Credit Union Section in accordance with approved policy; (b) application and enforcement of the Co-operative Societies Ordinance and the Credit Unions Ordinance; (c) provision of advice and direction, as necessary, to staff of the section, officials of co-operative societies and credit unions and other Government Departments on matters relating to the laws, by-laws, principles and practices and accounting methods of co-operative societies and credit unions; (d) registration of co-operative societies and credit unions, their by-laws and any amendments thereto; (e) mediation and settlement of disputes among members of a co-operative society or between a member and its committee or between a society and another society; and (f) conducting liquidation of co-operative societies and winding-up of credit unions.