(1)  In relation to an investigation in this State to ascertain any person's liability or entitlement under a corresponding law, a corresponding Commissioner may exercise any investigation power that the corresponding Commissioner may exercise under the corresponding law.

(2)  A corresponding Commissioner may only exercise an investigation power –

(a) with the written approval of the State Commissioner; and

(b) while that approval is in force; and

(c) in accordance with any conditions of that approval.

(3)  The State Commissioner, by notice in writing, may –

(a) give an approval subject to any condition; and

(b) vary or revoke an approval; and

(c) vary or revoke a condition of an approval.

(4)  A corresponding Commissioner, by a certificate of authority, may authorise a person to exercise in accordance with this section any investigation power the corresponding Commissioner may exercise under this section.