Northern Territory Consolidated Acts7. Oath of office
(1) A justice of the peace appointed under section 5 must, before proceeding to exercise the powers or discharge the duties of the office, take an oath or make an affirmation in accordance with Schedule 2.
(2) Where a justice of the peace has once taken an oath or made an affirmation, it is not necessary for him or her to take an oath or make an affirmation for the purpose of a subsequent appointment.