The author devotes attention to the question of the migration of Slovak industrial and agricultural workers to work in Germany in the period 1939 - 1945. This was associated with the economic connection between these two countries. Simultaneously it solved the problems of lack of workers in Germany and long term unemployment in Slovakia. On the basis of the agreement from the 8th December 1939 on the provision of Slovak workers to the Third Reich, workers went to Germany for permanent or seasonal work. We can assess the migration of workers to Germany from the two points of view. On one hand, we have to state that the employment of Slovak workers in the 'Third Reich' occurred on a voluntary basis and after the conclusion of a normal employment contract. The main motivating factor was the availability of a good income to support the family at home in Slovakia. The employment of workers abroad succeeded in reducing unemployment - a long term problem of the Slovak economy. On the other hand, from the point of view of the state, the employment of workers in Germany was an economic burden, because the workers had to be paid by the SNB form, a clearing method of payment disadvantageous for Slovakia. In this system of payments, Slovakia gained high unpaid claims against Germany, which placed a heavy burden on the state treasury.