(a) Except as provided by Subsections (c) and (d), an employee of a public junior college who is employed to perform services outside this state is not eligible to participate in the group benefits program unless the college elects, under procedures adopted by the board of trustees, to permit the employee to participate in the group benefits program.
(b) For purposes of this section, an employee is employed to perform services outside this state if 75 percent or more of the services performed by the employee are performed outside this state.

(c) This section does not apply to an individual employed by a public junior college on August 31, 1999. That individual remains eligible to participate in the group benefits program in the same manner as other employees of the college even if the individual’s employment by the college is not continuous.
(d) An employee of a public junior college who is employed to perform services outside this state and who is employed after June 18, 1999, is eligible to participate in a group coverage provided under this chapter if the coverage is provided under an insurance policy, contract, or other agreement that:
(1) is in effect on June 18, 1999; and
(2) requires that the employee be eligible to participate in the coverage provided under the agreement.
(e) Eligibility to participate in a coverage under Subsection (d) ends on the date the insurance policy, contract, or other agreement is terminated or renewed.