Although the multinational integration process is continuous, five large stages can be distinguished: free trade area, customs union, common market, economic and monetary union, political union. Nowadays, it is important to elaborate and discuss one of the most important stage and the most crucial step of economic integration - internal market.

In March 2000, the then 15 EU Member States agreed at the Lisbon Spring Council, that the EU should commit to raising the rate of growth and employment to underpin social cohesion and environmental sustainability. In the Report "Facing the Challenges: The Lisbon strategy for growth and employment", by W. Kok; it is said that there are a series of interconnected initiatives and structural changes that through concurrent action in the European Union will release its undoubted potential. This requires urgent actions across five areas of policy; i.a.: the completion of the internal market as regards free movement of goods, capital, and urgent actions to create a single market for services. In order to achieve the Lisbon Strategy goal, the implementation of the internal market directives is needed. Up to now, only five countries have exceeded the target for transposing EU internal market directives. The internal market permits to those companies and sectors that have relative competitive strengths to build on their specialist advantages and to grow.

Taking into account the above mentioned arguments, it is very important to provide the Students of different faculties within the Warsaw School of Economics, with the broad and, on the other hand, very detailed information on the internal market: on the legal basis and on the economic consequences for every undertakings, even domestic ones. These companies sell their products, provide services, can obtain capital or employ workers not only within the domestic market but in the internal market of EU-25. It is very important to understand and to discus with Students, interested in different parts of economy (theory, marketing, management, international relation, European issues, banking and financial systems), about the impact of the completion of the internal market on companies. Only wider knowledge, which is also an element of the idea of the economy based on knowledge, as in line with the Lisbon Strategy priorities, can help the Students of the Warsaw School of Economics understand the mechanisms of the European economic integration and the influence of it on their businesses.

The proposed European module "Internal market - economic dimension" will be one of a compulsory lecture within the European faculty of the Warsaw School of Economics, which can be also chosen by Students from various faculties (Economics, Management and marketing, International relations, European affairs) and will be a part of the obligatory lectures of the specialisation: "Internal Market of the EU". Such a system can ensure that Students of different discipline will be able to attend the lectures and to wide their knowledge thus proposed European module should reach a large number of Students.