The aim and objective of this paper is to present the process of unpredictable change in management accounting in Libyan company. In order to provide an explanation this process, the researchers used the contingency and institutional theories. The researchers concentrated all the efforts on the subsequent directions: the presentation of the scientific context and encouragement of this research and the case study. The researchers presented the state of the method in the process of unpredictable change in the management accounting from national and global point of view. The research also described the development of management accounting in Libyan in the context of economic and political changes. This represents a starting point for a new economic environment and for new management accounting. Consequently, the researchers developed a case study which presented this development. The derivation of our research was that the changes in the management accounting system of the Libyan company analyzed appear in the same time with the institutionalization of some moderate view (e.g. degree of competition, competencies and training in management accounting). The management accounting system (MAS) was modeled by the contingencies specific to this company (e.g. industry, strategy).
Keywords: Contingecy Theory, Environmental Uncertainty, Internal Audit, Management Accountant System, Stewardship Theor
