(a) For the purposes of this section, the term “donor” means an individual who makes a gift of an organ, including eyes, or bone marrow. (b)(1) If in addition to any medical, personal, or other paid leave, including credit for time of service, provided by a corporation, the corporation provides an employee a paid leave of absence to serve as an organ or bone marrow donor, the corporation may claim a nonrefundable credit equal to 25% of the regular salary paid during the taxable year for the leave of absence, not to exceed 30 days for an organ donation and 7 days for a bone marrow donation. (2) If the corporation elects to claim the credit, an amount equal to the salary or wages upon which the 25% credit is computed shall not be allowed as a deduction. (3) The credit shall not reduce the minimum tax liability of $100 [now $250] under § 47-1807.02(b). (c) This section shall not apply if the employee is eligible for leave under the Family and Medical Leave Act of 1993, approved February 5, 1993 (107 Stat. 6; 29 U.S.C. § 2601 et seq.). (d) The Chief Financial Officer or his delegate shall promulgate regulations as may be necessary and appropriate to carry out provisions of this section.