This research report forms part of the very first comprehensive evaluation of the benefits and effectiveness of product stewardship and extended producer responsibility (EPR) activities in Australia. It is part of a wider research and evaluation project that includes secondary research from publicly available data, case study research and data harvesting. Over a 12-week period, Dentsu Creative on behalf of the University of Technology Sydney and the Product Stewardship Centre of Excellence, undertook 60 qualitative interviews with stakeholders to develop insights into: • How the effectiveness and benefits of stewardship are measured and reported • Perceptions of the benefits of stewardship • Insights into stakeholder views on how stewardship could be more effective • Opportunities to advance participation in product stewardship. Stakeholders each participated in a 30-minute in-depth interview during which they were asked a range of questions relating to their involvement in product stewardship initiatives. Specifically, we asked them to detail their role, key performance indicators used to measure success, funding models, drivers for participation, and any barriers or challenges identified.