(a) The oath or affirmation of any disaster service worker of the state shall be filed as prescribed by State Personnel Board rule within 30 days of the date on which it is taken and subscribed.
(b) The oath or affirmation of any disaster service worker of any county shall be filed in the office of the county clerk of the county or in the official department personnel file of the county employee who is designated as a disaster service worker.
(c) The oath or affirmation of any disaster service worker of any city shall be filed in the office of the city clerk of the city.
(d) The oath or affirmation of any disaster service worker of any other public agency, including any district, shall be filed with any officer or employee of the agency that may be designated by the agency.
(e) The oath or affirmation of any disaster service worker may be destroyed without duplication five years after the termination of the disaster service worker’s service or, in the case of a public employee, five years after the termination of the employee’s employment.