ILO Declaration on Fundamental Principles and Rights at Work."Adopted in 1998, the Declaration commits Member States to respect and promote principles and rights in four categories, whether or not they have ratified the relevant Conventions." For Categories see more
These categories are: freedom of association and the effective recognition of the right to collective bargaining, the elimination of forced or compulsory labour, the abolition of child labour and the elimination of discrimination in respect of employment and occupation."
The International Labour Organization by 
The ILO @ 100 : Addressing the past and future of work and social protection by 
International Labour Organization and Global Social Governance by