According to the principle of trade union freedom, a worker canjoin any union, can resign at any time and use his right not to join anytrade union. It is necessary to determine how the workers who do notjoin trade union that is a party to the collective labour agreement orresigned from the union, can be benefitted from the collective labouragreement. In the Trade Unions and Collective Labour Agreement Actnumber 6356, a regulation is made considering that principle. Thatregulation is compliance with trade union freedom that allowsemployees who are not member to a signatory trade union arebenefitted from the collective labour agreement. Thus, employees whoare not a member of a signatory trade union can benefit from thecollective labour agreement from the date of signature to the endsolely by paying a solidarity due to the union