18 Constitution of the Independent State of Samoa (3) If a vacancy in the office of Head of State is caused by the death, resignation or removal of the Head of State or by the expiry of the term of office, Article 18 applies and the person appointed as Head of State holds office for a term of 5 years from the date on which the person takes the oath of office. 20. Disabilities of Head of State - The Head of State shall not hold any other office of profit or any other position carrying the right to remuneration for the rendering of services, or engage in any occupation for reward outside the functions of his or her office; but nothing in this clause shall prevent the Head of State from holding the pule over any customary land, from holding any freehold land or other private property, or from disposing of the produce of any customary or freehold land. 21. Resignation and removal from office - (1) The Head of State may resign his or her office by writing under his or her hand addressed to the Prime Minister, who shall forthwith advise the Speaker of the Legislative Assembly of that resignation. (2) The Head of State may be removed from office by the Legislative Assembly on the ground of misbehaviour or of infirmity of body or mind. (3) No proposal for the removal from office of the Head of State under the provisions of clause (2) shall be effective unless: (a) notice of motion setting out the grounds for the proposed removal has been given in writing and signed by not less than one-fourth of the total number of Members of Parliament (including vacancies); (b) a period of at least 14 days has elapsed between that notice and the debate on the motion; and (c) the motion has been agreed to by not less than twothirds of the total number of Members of Parliament (including vacancies). (4) A resolution carried under the provisions of clause (3), shall have the effect of removing the Head of State from his or her office as from the date on which the resolution is so carried. 22. Salary of Head of State - The salary of the Head of State shall be determined by Act and shall be charged on the Treasury