(1) The chief executive may, for the purposes of section 23, issue a certificate of exemption to an employer who is an individual if the chief executive is satisfied that the employer is a practising member of a religious society or order whose doctrines or beliefs preclude membership of any organisation or body other than the religious society or order of which the employer is a member.
(2) The chief executive may revoke a certificate of exemption if—
(a) the employer to whom it has been issued agrees; or
(b) it was issued in error; or
(c) the chief executive is satisfied that the employer has ceased to be a person eligible to be issued with the certificate.