(a) Unions may establish such other reasonable rules as are necessary to protect the members against leaders who may have committed serious offenses against the union. For example, a union may, after appropriate proceedings, bar from office persons who have misappropriated union funds, even if such persons were never indicted and convicted in a court of law for their offenses. Of course, the union would have to provide reasonable precautions to insure that no member is made ineligible to hold office on the basis of unsupported allegations and that any rights guaranteed him by the constitution and bylaws are protected. Similarly, a union may require an elected officer to sign an affidavit averring that he is not barred from serving as an officer by the provisions of section 504 of the Act since the union and its officers may not permit a person to serve as an officer if he is so barred (see footnote 23).

(b) It would not violate the Act for a union to prohibit successive terms in office or to limit the number of years an officer may serve. Such rules are intended to encourage as many members as possible to seek positions of leadership in the organization.