The study deals with the development and instrumentalization of the Handlová strike (1940) in the historiography before 1989. In the paper, I will provide the situation that preceded the strike and then the analysis of its process. It will also be necessary to determine who initiated the strike and what role the illegal communist movement played in it. I am going to compare the forms of instrumentalization with some of the claims made by historiography after 1989. In the context of instrumentalization of a strike, several questions arise. Was this a significant historiographic milestone? For what purpose was it used? Who and why was he the maintainer of his instrumentalization? How much influence had the communists during the strike?