La. Const. art. III, § 19

All laws enacted during a regular session of the legislature shall take effect on August first of the calendar year in which the regular session is held and all laws enacted during an extraordinary session of the legislature shall take effect on the sixtieth day after final adjournment of the extraordinary session in which they were enacted. All laws shall be published prior thereto in the official journal of the state as provided by law. However, any bill may specify an earlier or later effective date. Acts 1992, No. 1139, §1, approved October 3, 1992, effective November 5, 1992; Acts 2009, No. 537, §1, approved October 2, 2010, effective January 1, 2012.