In any unified school district with 100,000 or more average daily attendance as an alternative to the payment procedures prescribed by Section 42644, orders for the payment of wages, and payroll orders for the payment of wages and warrants for the payment of wages of employees employed full time in positions not requiring certification qualifications shall be drawn once each two weeks, twice a month, or once each four weeks on days designated in advance by the governing board of the district. Labor performed during each such payroll period shall be paid for not later than the eighth working day of the following payroll period.