He was also elected as a
Member of the Legislative Assembly (MLA) in the year 1946. During this tenure, he was a member of the constituent assembly that helped formulate the Constitution of India. He was part of the transient assembly and legislature formed just before India attained its independence. Parisutha Nadar and
Jerome D'Souza were part of the commission that was specially formed for "the protection of Minorities' rights" under the Indian Constitution. As MLA for Thanjavur, he completed a project to provide drinking water to Thanjavur from Kollidam. Thanjavur's Bus Stand, now referred to as the
Old Bus Stand, was also instituted during his term in office. A bicycle manufacturing plant was also begun on his initiative. This was part of his vision towards providing industrial infrastructure and colleges of higher education. A.Y.S. Parisutha Nadar was the MLA in Tamil Nadu, India for 3 terms, spanning over 15 years. He lost only once contesting against the
Dravida Munnetra Kazhagam leader
M Karunanidhi on a difference of about 1000 votes. He also served as the Municipal Chairman of Thanjavur apart from his dedication to the Indian National Congress. He had avery close association with
Kamaraj and
Kakkan. ==Achievements ==