The purpose of this final thesis is to explain, in detail and with precision, the operational preparation of production in an enterprise. Operational preparation of production, as a service within the technical sector of an enterprise, has the main purpose to achieve basic goals of every manufacturing - to produce good quality products with the least expense and on time. Operational preparation of production could not reach its goals without close cooperation with other sectors and services in an enterprise, which helps the enterprise thoroughly with the ex-ecution of its goals - planning of the manufacturing production organization and quality con-trol of the products. Planning and organization of production are accomplished through busi-ness planning, establishing production capacities, distribution of labor, establishing material capacities and determining work materials as well as producing and launching of the work documentation. There are various methods of planning and organizing of the production. The most commonly used methods include gantograms based on previous production plans and cycles. The control of production uses methods that follow previously assigned documenta-tion.