convention concerning freedom of association and protection of the right to organize workers and employers without distinction whatsoever shall have the right to establish and subject only to the rules of the organization concerned to join organisations of their own choosing without previous authorization convention concerning the application of the principles of the right to organize and to bargain collectively workers shall enjoy adequate protection against acts of antiunion discrimination in respect of their employment equal remuneration convention ensure the application to all workers of the principle of equal remuneration for men and women workers for work of equal value