In 1888, the FSC promoted the creation of the Unión General de Trabajadores (UGT) in Barcelona.
The leaders and members of the Federation actively participated in the general strike of 1909 in Barcelona, known as the Tragic Week.
The subsequent repression left the party disorganized; but the FSC emerged with new impetus at the end of next year (1910) with the appointment of Josep Recasens as its Secretary General.
In 1923 the FSC suffered a split, that collaborated with Esquerra Republicana de Catalunya, the Socialist Union of Catalonia.
In the 1970s, the PSOE fully reactivated its federation in Catalonia, under the direction of Josep Maria Triginer i Fernández.