Non-discrimination/equality mainstreaming is the systematic incorporation of non-discrimination and equality concerns into all stages of the policy process. It is implemented on the six grounds of gender, racial or ethnic origin, disability, age, religion or belief and sexual orientation. But non-discrimination/ equality mainstreaming is a challenging concept to implement. This compendium is designed to assist policy makers and programme managers, in all policy fields, to implement this mainstreaming as an integral part of their work. It offers guidance on supporting and implementing mainstreaming and sets out a broad range of practice examples from different Member States.