In the present article the author has shown the development of worker’s and the people’s front movement as well as a continuous strengthening of the role of the Communist Party in it from the middle of the thirties until the occupation of 1941 in the Domžale region. The article is written on the basis of newspaper and archive sources as well as memoir literature and reminiscences. An important break in the workers’ movement and also in the socio-political development of the Domžale region was the victorious strike of paper-mill workers in Bonač’s factory at Količevo in 1935. It encouraged also workers in other factories at Domžale to organize themselves in trade unions and to start fighting successfully for the improvement of workers’ position. The orientation in the workers’ movement was given by the cell of the Communist Party at Dob — Prevoje, which also helped to organize one of the biggest meetings of the people’s front that took place after the founding congress of the Communist Party of Slovenia on 23 May 1937. The successful activity of the Communist Party organization before the World War II, was a significant condition for a successful course of preparations for the uprising, which achieved its massive dimensions just in the Domžale and Kamnik regions on 27 July 1941.