The UN Framework and the Guiding Principles are “game changers” that involve new thinking about business behaviour…Trade unions can use the UN Guiding Principles: to resolve problems and develop the meaning of due diligence through OECD Guidelines cases and in other intergovernmental mechanisms such as at the IFC; to influence government policy and legislation concerning business behaviour; to fight precarious work and to demand employment relationships in the supply chain; to influence intergovernmetal organisations (ILO, World Bank, OECD and others); to assess or to change CSR initiatives; Trade unions can also use the Guiding Principles to engage companies: over specific problems; to broaden the scope of framework agreements; to change the framework for social dialogue; to address issues related to precarious work and to supply chain relationships; and to assess company policies and non-financial reporting.