(1) An inspector who is of the opinion that a person -

(a) is contravening or has contravened any of the relevant statutory provisions, or

(b) has failed to comply with a direction under section 65(1), or a notice under section 65(4)(b), or

(c) has submitted a plan in relation to which an inspector has confirmed by notice under section 65(5) that he or she is not satisfied that the plan is adequate, or

(d) has failed to implement a plan,

may serve a written notice (in this Act referred to as an "improvement notice") on the person who has or may reasonably be presumed to have control over the work activity concerned.

(2) An improvement notice shall -

(a) state that the inspector is of the opinion referred to in subsection (1),

(b) state the reasons for that opinion,

(c) identify the relevant statutory provision in respect of which that opinion is held,

(d) [deleted]