(1)  The occupier of a specified building acting in consultation with an authorised person, or an authorised person acting alone, may exempt a person from taking part in a particular practice evacuation if reasonably satisfied that the associated stoppage or interruption of the person's work or activity would –

(a) cause commercial loss; or

(b) endanger life or property.

(2)  The Chief Officer, by notice, may grant a person a standing exemption from taking part in practice evacuations of a specified building generally if reasonably satisfied that the associated stoppages or interruptions of the person's work or activity would routinely –

(a) cause commercial loss; or

(b) endanger life or property.