An emergency management worker does not incur any civil or criminal liability in respect of any act done or omitted to be done by the person in good faith –

(a) in undertaking emergency management, rescue and retrieval operations or a prescribed activity; or

(b) in the performance or exercise, or the purported performance or exercise, of any function or power under this Act; or

(c) in the administration or execution, or the purported administration or execution, of this Act.