International Labour Conference 92nd Session 2004 - Report I (B).

The fundamental principle of freedom of association and the right to collective bargaining is a reflection of human dignity. It guarantees the ability of workers and employers to join and act together to defend not only their economic interests but also civil liberties such as the right to life, security, integrity and personal and collective freedom. It guarantees protection
against discrimination, interference and harassment. As an integral part of democracy, it is also key to realizing the other fundamental rights set out in the ILO Declaration.