(1)(a) An employer will be deemed to be continuing to furnish or make available part-time work to the individual in substantially the same amount as during the individual's base year if the employer is continuing to furnish or make available hours, with respect to a week in the benefit year, in an amount equal to 90 percent or more of the individual's average part-time weekly base year hours.

(b) An individual need not actually work substantially the same amount of hours as during the individual's base year in order for the employer to be eligible for relief of benefit charges, so long as the employer is continuing to furnish or make available substantially the same amount of hours as during the individual's base year.

(2) For purposes of this section:

(a) Base year means either the individual's regular base year or alternate base year, depending on whichever is used as the basis for the individual's claim.

(b) An individual's average part-time weekly base year hours shall be calculated by dividing the individual's total base year part-time hours worked for the employer requesting relief of charges by the total weeks of part-time work associated with such hours.

(3) Benefit charge relief will cease when, with respect to a week in the benefit year, the employer stops furnishing or making available hours to the individual in substantially the same amount as during the individual's base year.