They had however been expelled from the Czechoslovak Socialist Party in 1923, as they opposed the Defense of the Republic Act.
[2] In the Czechoslovak National Assembly, the Independent Socialists formed a joint parliamentary group (Socialist Association) together with the Independent Radical Social Democratic Party of V. Brodecký.
The Independent Socialist Party took the name Independent Socialist Workers Party (Czech: Neodvislá socialistická strana dělnická) at a congress in June 1924.
[3] Leading figures of the Independent Socialist Workers Party included Bohuslav Vrbenský, Theodor Bartošek and Luisa Landová-Štychová.
Through the merger between the two parties, a large number of mining workers from Most District joined the CPCz.