(1) The Authority may grant an exemption under regulation 537 or 538(1)—
(a) on its own initiative; or
(b) on the written application of any person.
(2) The Authority may grant an exemption under regulation 538(2) —
(a) in the case of an exemption applying to a class of employer—
(i) on its own initiative; or
(ii) on the written application of an employer who seeks the exemption; and
(b) in the case of an exemption that is to apply to only one employer, on the written application of the employer.