In 1922–25, Bierut was a member of the Cooperative Department of the KPRP Central Committee. He worked as a bookkeeper and was active in Warsaw at the Polish Association of Freethinkers. In August 1923, he was sent for party work in the Dąbrowa Basin, to manage the Workers' Food Cooperative. He lived in Sosnowiec, where he brought his wife and daughter and where he experienced the first of his many arrests. Detained repeatedly in various parts of the country, in October 1924 he moved to Warsaw. He had become a full-time conspiratorial party activist and in 1925 was a member of the Temporary Secretariat of the Central Committee and then the head of the Cooperative Department there.