18. It is prohibited for a public office holder who has left public office to disclose confidential information or to give anyone advice based on information not available to the public concerning the agency, body or enterprise for which he worked, or concerning another agency, body or enterprise with which he had a direct and substantial relationship during the year preceding the end of his term of public service.
Within one year after leaving office, a public office holder shall not act for or on behalf of anyone else in connection with a proceeding, negotiation or other transaction to which the agency, body or enterprise that he served is a party and about which he has information not available to the public.
A public office holder of an agency, body or enterprise referred to in the second paragraph may not, in the circumstances referred to in that paragraph, deal with a public office holder referred to therein for one year following the end of his term of public service.