(a) In the case of an employee who does not receive a pay increase under § 9701.323 because of an unacceptable rating of record and whose rate of basic pay falls below the minimum rate of his or her band as a result of that rating, DHS must—

(1) If the employee demonstrates performance that meets or exceeds performance expectations within 90 days after the date of the rate range adjustment, issue a new rating of record under § 9701.409(b) and adjust the employee's pay prospectively by making the increase effective on the first day of the first pay period beginning on or after the date the new rating of record is issued; or

(2) Initiate action within 90 days after the date of the rate range adjustment to demote or remove the employee in accordance with the adverse action procedures established in subpart F of this part.

(b) If DHS fails to initiate a removal or demotion action under paragraph (a)(2) of this section within 90 days after the date of a rate range adjustment, the employee becomes entitled to the minimum rate of his or her band rate range on the first day of the first pay period beginning on or after the 90th day following the date of the rate range adjustment.