She then found work with the National Federation of Women Workers (NUWW),[2] as the assistant to Mary Macarthur,[3] and began taking the lead on negotiations on wages and conditions in engineering.
[2] The federation became part of the National Union of General Workers, and Symons instead became the assistant to Margaret Bondfield.
[3] In 1925, Symons posted bail for Robin Page Arnot, a leading figure in the Communist Party of Great Britain.
[5] She served on a large number of government committees, particularly those relating to child social services and youth justice, and was also chair of the West London Juvenile Courts.
[2] She was also active in the Howard League for Penal Reform, the Magistrates' Association, and served on the executive of the National Union of Societies for Equal Citizenship in the mid-1920s.