These are covered in Convention No. 98, art. 1.
1. Workers shall enjoy adequate protection against acts of anti-union discrimination in respect of their employment.
2. Such protection shall apply more particularly in respect of acts calculated to--
(a) make the employment of a worker subject to the condition that he shall not join a union or shall relinquish trade union membership;
(b) cause the dismissal of or otherwise prejudice a worker by reason of union membership or because of participation in union activities outside working hours or, with the consent of the employer, within working hours.
According to ILO key principles, the State must adopt:
- Legislative provisions prohibiting acts of anti-union discrimination. These must be broad enough in scope to cover all possible types of such discrimination, such as refusal to hire, dismissal, transfer, demotion, refusal to train, etc.
- National procedures must ensure that complaints of anti-union discrimination are examined promptly, impartially, inexpensively and effectively.