63 IJIBEC HALAL ASSURANCE SYSTEM (HAS) 23000 PERSPECTIVE GEORGE ROBERT TERRY Hery Purwanto 1 , Ahmad Rofiq 2 , Mashudi 3 1 Lecturer, Central Java Al-Qur’an Science University in Wonosobo, Indonesia 2 Professor, Ph.D., Islamic University of Walisongo, Indonesia 3 PhD, Islamic University of Walisongo, Indonesia Email: unsiqhepu@gmail.com Abstract A company's success in achieving its predetermined goals is possibly resulted from its good managerial skills in planning, organizing, mobilizing, and controlling. Many companies then look for a model or system to achieve those goals. Halal Assurance System (HAS 23000) is one expert management system used as a model by many companies in implementing the halal production processes. The HAS 23000 concept certainly has the management constructions, such as management functions. This library research used a descriptive-qualitative approach. The results showed that there were 11 criteria in HAS 23000 related to the management functions based on the perspective of George Robert Terry consisting of planning function, organizing function, mobilizing function, controlling or supervising function, etc. The theoretical approach proposed by George Robert Terry on management functions was used to analyze those contained in HAS 23000 and show the novelty when compared to those conducted by the previous researchers. International Journal of Islamic Business and Economics Available at http://e-journal.iainpekalongan.ac.id/index.php/IJIBEC ISSN 2599-3216 E-ISSN 2615-420X Vol 4 No 2 2020 Keywords: HAS 23000, Management, George Robert Terry DOI:https://doi.org/10.28918/ijib ec.v4i2.2988 JEL: M.15, M.20, M.54 Article Info Article History: Received : 20 Oct 2020 Accepted : 24 Nov 2020 Published : Dec 2020