Whenever the Chief Commissioner makes a recommendation to an authority in pursuance of clause (b) ¹[of sub- section (1)] of section 75, that authority shall take necessary action on it, and inform the Chief Commissioner of the action taken within three months from the date of receipt of the recommendation:

   Provided that where an authority does not accept a recommendation, it shall convey reasons for non- acceptance to the Chief Commissioner within a period of three months, and shall also inform the aggrieved person.