This report presents an overview of the design, functioning and effects of extended producer responsibility (EPR), both in theory and policy practice. EPR is a policy approach in which the responsibility of producers is extended to the post-consumer stage of a product’s lifecycle. It employs a diverse policy instrument mix that aims to make producers — financially, and sometimes also organisationally — responsible for the collection, sorting and treatment of end-of-life products. It thereby aims to increase the separate collection of end-of-life products and to enable their more circular treatment. This study analyses the effects of EPR on waste management, secondary material markets, and eco-design, based on a literature review and interviews with stakeholders.