An oath of office is an oath or affirmation a person takes before undertaking the duties of an office, usually a position in government or within a religious body, although such oaths are sometimes required of officers of other organizations. Such oaths are often required by the laws of the state, religious body, or other organization before the person may actually exercise the powers of the office or any religious body. It may be administered at an inauguration, coronation, enthronement, or other ceremony connected with the taking up of office itself, or it may be administered privately. In some cases it may be administered privately and then repeated during a public ceremony.
Some oaths of office are a statement of loyalty to a constitution or other legal text or to a person or other office-holder (e.g., an oath to support the constitution of the state, or of loyalty to the king). Under the laws of a state it may be considered treason or a high crime to betray a sworn oath of office.
The word 'oath' and the phrase 'I swear' refer to a solemn vow. For those who choose not to, the alternative terms 'solemn promise' and 'I promise' are sometimes used.
All members of the Australian Parliament are required to take before taking their seat in Parliament an Oath or Affirmation of Allegiance before the Governor-General of Australia. The requirement to take the oath is set out in section 42 of the Australian Constitution and the wording of the oath and affirmation are set out in a schedule to the Constitution. The oath is:
I, (name), do swear that I will be faithful and bear true allegiance to Her Majesty Queen Elizabeth the Second, Her heirs and successors according to law. So help me God!
The affirmation is:
I, (name), do solemnly and sincerely affirm and declare that I will be faithful and bear true allegiance to Her Majesty Queen Elizabeth the Second, Her heirs and successors according to law.
Upon taking office, the Governor-General of Australia is required to take the above Oath of Allegiance as well as a second Oath of Office: