23-604. Annual payroll and average annual payroll
A. " Annual payroll" means the total amount of wages for employment paid by an employer during a twelve-month period ending on June 30 of any calendar year.
B. In computing an employer's contribution rate, " average annual payroll" means:
1. The annual payroll for the twelve-month period immediately preceding the computation date for an employer whose account has been chargeable with benefits for twelve but less than twenty-four months.
2. The average of the annual payrolls for the last two twelve-month periods immediately preceding the computation date for an employer whose account has been chargeable with benefits for twenty-four but less than thirty-six months.
3. The average of the annual payrolls for the last three twelve-month periods immediately preceding the computation date for an employer whose account has been chargeable with benefits for thirty-six or more months.
C. " Computation date" means July 1 of each calendar year with respect to rates of contribution applicable to the calendar year beginning with the following January 1.