(a) Subject to such return requirements as may be imposed by the State Bank Commissioner, the Insurance Commissioner, or the Secretary of the Department of Finance, qualified employers shall be eligible during the year the organ transplantation occurred for credits against the taxes imposed by the following statutory provisions:
(1) Chapter 11 of Title 5.
(2) Sections 702 and 703 of Title 18.
(3) Chapter 11 of this title.
(4) Chapter 19 of this title.
(b) The amounts of the credit against the tax shall equal 25% of the gross wages paid to the donor for a period of up to 30 days of missed work for each donation, but the gross wages paid to the donor during the time missed from work for purposes of calculating this credit may not include wages paid to the donor for traditional paid time off. Notwithstanding anything in this title to the contrary, no deduction will be allowed for that portion of the wages or salaries paid or incurred for the taxable year that is equal to the credits determined by a qualified employer for the taxable year under this chapter.
(c) To the extent a qualified employer's credits exceed any amounts otherwise due for the taxes and fees listed under subsection (a) of this section, such unused credits shall be paid to it in the nature of tax refunds.