He also served as Secretary to the Election Commission of India (ECI).
He went to Delhi in 1945 and joined government of India service as an officer at the Constituent Assembly Secretariat.
His works include Meghangalkidayil Mayil, Nigoodaniswanangal, IKKMinte Kathakal, Wild Flur, Palayanam, Kunjhalimarakkar, Folk Tales of Kerala, Story of Ayurveda, Parakkunna Raniyum Koottukarum, and biographies of Appu Nedungadi, Cartoonist Shankar and Sultana Razia.
[1] Menon won the Kerala Sahitya Akademi Award in 2003.
Their daughter Visalakshi Menon was Associate Professor of history at Jesus and Mary College Delhi University.