The objective of this guide is to help CSOs [civil society organizations] use the Guiding Principles in their research, campaigns, engagement and advocacy towards companies and governments. By using the Guiding Principles...CSOs can play an indispensable role as a countervailing power in confronting companies with their responsibility to respect internationally recognised human rights and ensuring they are held to account to meet their responsibility and improve their behaviour. Thereby, CSOs can contribute to making the Guiding Principles of real value for rights holders likely to be negatively affected by corporate activities...CSOs will be able to provide national and international authorities with useful insights in the strengths and weaknesses of the Guiding Principles, helping to improve the international business and human rights framework in due course...This guide offers a methodology to check performance of multinational corporations in relation to the Guiding Principles by means of performance indicators and assessment questions