Trade union office bearers face disqualification for age, convictions involving moral turpitude with a five year post release bar, and certain public offices. Section 21 sets disqualification rules for registered trade union executives and office bearers: under eighteen persons; those convicted of offences involving moral turpitude and imprisoned until five years have elapsed since release; and persons subject to a Tribunal directed disqualification for the specified period. It also bars members of the Council of Ministers and holders of an office of profit under the Union or a State (except employment in a connected establishment or industry) from serving as union executives or office bearers.