80.7. Section 80.6 does not apply to proceedings between an operator and the Deputy Minister or to an appeal to the Commission de la fonction publique under the Public Service Act (chapter F-3.1.1) or to other proceedings in matters of labour relations between the Department and one of its employees, but the Minister, the Deputy Minister and the Assistant Deputy Ministers of the Department are not compellable; they shall, however, upon a written request by a party served at least 30 days before the date of the hearing and specifying the facts concerning which a testimony is required, designate a public servant having knowledge of the facts to testify. Where the Commission de la fonction publique, another labour relations authority party to proceedings between the Department and one of its employees or a board of inquiry established by the Government requires a public servant to testify before it, the testimony is given and, if applicable, documents are produced exclusively behind closed doors, and such testimony and documents shall not be mentioned in any document, report, stenographic notes or recording of that Commission, authority or board or mentioned at its other public sittings or sittings behind closed doors.