Respect for the principles and rights enshrined in the fundamental Conventions of the ILO has always been a prime concern of trade union organizations. For those States that have ratified these core Conventions, the supervisory mechanism now in place effectively ensures their application, and trade union organizations are increasingly prepared to use them.The ILO Declaration on Fundamental Principles and Rights at Work and its Follow-up, adopted by the International Labour Conference at its 86th Session ( June 1998), introduces a new instrument for promoting these principles and rights, especially for member States which have not ratified these Conventions.