[2][3] After the February Revolution, she returned to Petrograd (Saint Petersburg) and became editor of Rabotnitsa,[1] 'which played crucial role in organizing women and rallying them to Bolshevik Party'.

In 1924 she became head of the Zhenotdel (the women's department of the Secretariat of the Central Committee of the Communist Party of the Soviet Union), after Alexandra Kollontai and Sofia Smidovich.

During the Second World War, she organized the preparation of nurses and health personnel, the evacuation of children, sponsorship of Red Army units by professional unions, and paramedical institutions.

While returning to Murmansk from a political visit to the United Kingdom her convoy was bombed by the Germans and Nikolayeva helped rescue the wounded.

In addition to her articles in The Worker, Klavdiya Nikolayeva wrote two books on the role of women in the construction and defence of the Soviet Union: