The Nair Service Society or the NSS as it is popularly known in Kerala has its headquarters in Perunna, Changanacherry. NSS is a social organization established in 1914 which has made remarkable contributions in the fields of education, medicine and agriculture. The Society was started by Mannathu Padmanabhan on 31 October 1914. The NSS is a three tier organisation with Karayogams at the base level, Taluk Unions at the intermediate level and the Headquarters at the apex level. The Society owns and manages a large number of educational institutions and hospitals.