; and (B) subject to paragraph (3), for a part-time, hourly, or piece-rate covered individual, a specified amount of paid sick time equal to the number of hours that the covered individual was scheduled to work or, if not so scheduled, regularly works in a 14-day period. (3) Varying schedule hours calculation (A) In general In the case of a part-time, hourly, or piece-rate covered individual described in paragraph (2)(B) whose schedule varies from week to week to such an extent that an employer is unable to determine with certainty the number of hours the covered individual regularly works, the employer shall use the rules specified in subparagraph (B) to calculate the amount of additional paid sick time that the covered individual shall receive under paragraph (2)(B). (B) Special calculation rules The employer shall calculate that amount as— (i) subject to clause (ii), a number equal to the average number of hours that the covered individual was scheduled to work per 14-day period over the 6-month period ending on the date on which the covered individual takes such additional paid sick time, including hours for which the covered individual took leave of any type