Section 16(1)(d) in The Chennai Corporation Servants Conduct Rules, 1968
(d)The association shall not-(i)issue or maintain any periodical publication except in accordance with any general or special order of the Government;(ii)except with the previous sanction of the Government, publish any representation on behalf of its members, whether in the press or otherwise;(iii)in respect of any election to a legislative body, whether in India or elsewhere, or to a local authority or body -