; (III) is not otherwise prohibited from receiving an annuity pursuant to section 8312, 8314, or 8315 of such title; and (IV) as of the date of the enactment of this Act, holds a position subjecting such impacted Federal employee to either chapter 83 or 84 of title 5, United States Code. (c) Payment and withholdings treatment (1) Timing and treatment (A) In general Except as provided in subparagraph (B), for purposes of chapters 83 and 84 of title 5, United States Code, with respect to an impacted Federal employee described in paragraph (2), amounts paid to such impacted Federal employee under section 2(a) shall be deemed to be the basic pay of such impacted Federal employee that was earned by such impacted Federal employee at the time that such impacted Federal employee would have earned such portion if such employee had not been separated from the former employing agency based on a vaccination requirement implemented at such former employing agency pursuant to Executive Order 14043. (B) Concurrent Federal employment exclusion Any portion of an amount paid to an impacted Federal employee under section 2 that is deemed under subparagraph (A) to have been earned by such impacted Federal employee at a time during which such impacted Federal employee held a position subjecting such impacted Federal employee to either chapter 83 or 84 of title 5, United States Code, and any amounts paid under section 2(b) to an impacted Federal employee while such impacted Federal employee holds such a position shall not be deemed to be basic pay of the impacted Federal employee for the purposes of calculating the average pay of the impacted Federal employee under either such chapter. (C) Average pay defined For the purposes of this paragraph, the term average pay — (i) with respect to chapter 83 of title 5, United States Code, has the meaning given such term under section 8331 of such title