Section 132(2) in The Punjab Municipal Corporation Act, 1976
(2)Any person on whom a notice of assessment is served under sub-section (1) may, within one month from the date of service of such notice file an objection against such assessment before the Commissioner or an officer authorised by him in this behalf :Provided that an objection may be entertained after the expiry of the period of one month if the Commissioner or an officer authorised by him under sub-section (1) is satisfied that the failure to file objection was due to any cause beyond the control of the objector.