The National Classification for the Economic Activities is derived from the International Standard Industrial Classification of All Economic Activities, forth version (ISIC4) and issued by the United Nations Economic and Social Council. Its main purpose is to provide a set of sections, groups, branches and categories of activities that can be used to collect and publish statistics according to the activities. The Classification for Economic Activities can be defined as the way in which counting units can be collected according to a serial order and defined by homogeneous groups with a view to creating a general framework for comparison of statistical data at the local, regional and international levels, where the data of the economic activity can be divided according to the guide prepared for this to specific levels in a manner similar to the characteristics of economic activities classified in one rank. This similarity is in the type and use of goods and services produced, related services, intermediate inputs, technology used and funding methods.
The establishment or the unit of the economic activity type is the basis of this classification, where the units involved in the formation of the different economic sectors are classified in the appropriate place in the classification according to the main economic activity that they operate, regardless of ownership or method of work.
The classification aims at providing a set of statistical data according to the economic aspects of production, workers, wages, physical capital assets, profits, losses and budgets, as well as providing a comprehensive framework for economic activities.
 The classification consists of sections, groups and categories at the level of the fourth limit in addition to branches, economic activity and its description.