Except and unless upon unanimous vote of the Commission, relatives by blood or marriage of any Commissioner, or the City Manager, within the second degree of cansanquinity or affinity, are bona fide appointive officers or employees of the city at the time of the election of such officers or appointment of such City Manager, such relatives shall be disqualified from holding any appointive office or from being employed by the city during the term for which such Commissioner, was elected, or during the tenure of office of such City Manager. If the status of relationship between any employee of the city and any officer of the city changes to a relationship prohibited hereby after one (1) year following the employment of such person or election or appointment of such officer, the provisions of this section shall not apply.