EN
One of the most characteristic features of present-day structural changes is development of the service sector. For obvious reasons these problems receive a growing interest of the political economy. The author focusses his attention on some methodological problems connected with analysis of services and resulting from a different treatment of services by the Marxist and bouregois economic sciences. He is critical about some theses of the trisectorlal economy division concept pointing at the necessity of intrasectorial analysis and at asome difficulties connected with analysis of the internal structure of the service sector. The article contains also a list of problems, which in the author's opinion should be studied.