(a) An institution of higher education as defined by Section 61.003 may employ a person who has retired under the Teacher Retirement System (Subtitle C, Title 8, Government Code) or the optional retirement program (Chapter 830, Government Code) if:
(1) the governing board of the institution determines that the employment is in the best interests of the institution; and
(2) the person has been retired for at least 30 days before the effective date of the employment, except that a person retired under the optional retirement program may be rehired after retirement without a break in service.
(b) The governing board may pay a person employed under this section an amount considered by the governing board to be appropriate, notwithstanding any other provision of law.