All laws enacted at a regular session, including laws which are enacted by reason of actions taken during the reconvened session following a regular session, but excluding a general appropriation law, shall take effect on the first day of July following the adjournment of the session of the General Assembly at which it has been enacted; and all laws enacted at a special session, including laws which are enacted by reason of actions taken during the reconvened session following a special session but excluding a general appropriation law, shall take effect on the first day of the fourth month following the month of adjournment of the special session; unless in the case of an emergency (which emergency shall be expressed in the body of the bill) the General Assembly shall specify an earlier date by a vote of four-fifths of the members voting in each house, the name of each member voting and how he voted to be recorded in the journal, or unless a subsequent date is specified in the body of the bill or by general law.