Section 159, The Constitution of Sierra Leone, 1991

(1) Any person who is appointed or elected to, or otherwise selected for, any office established by this Constitution, including the office of Vice-President, Member of the Cabinet, Minister or Deputy Minister, may resign from that office by writing under his hand addressed to the person or authority by whom he was appointed, elected or selected: Provided that in the case of the Speaker of the Deputy Speaker his resignation from office shall be addressed to Parliament and in the case of a Member of Parliament his resignation from Parliament shall be addressed to the Speaker. (2) The resignation of any person from any such office as referred to in subsection (1) shall take effect, where no date is specified, when the writing signifying the resignation is received by the person or authority to whom it is addressed or by any person authorised by that person or authority to receive it.