(a) In any one leave year, a leave donor may donate no more than a total of one-half of the amount of annual leave he or she would be entitled to accrue during the leave year in which the donation is made.

(b) In the case of a leave donor who is projected to have annual leave that otherwise would be subject to forfeiture at the end of the leave year under 5 U.S.C. 6304(a), the maximum amount of annual leave that may be donated during the leave year shall be the lesser of—

(1) One-half of the amount of annual leave he or she would be entitled to accrue during the leave year in which the donation is made; or

(2) The number of hours remaining in the leave year (as of the date of the transfer) for which the leave donor is scheduled to work and receive pay.

(c) Each agency shall establish written criteria for waiving the limitations on donating annual leave under paragraphs (a) and (b) of this section. Any such waiver shall be documented in writing.

(d) The limitations in this section shall apply to the total amount of annual leave donated or contributed under subparts I and J of this part.