Resource Recycling Systems (RRS) was asked to research several questions generated by the Recycling Steering Committee (RSC) during the framework and scenario review and evaluation process. This is the fourth in a series of memos responding to the RSC’s questions. In this memo, RRS presents the results of research on the question of whether extended producer responsibility for packaging and printed paper (EPR for PPP) impacts packaging design. To address this question, the RRS team performed a literature search to identify any academic or other studies documenting changes in packaging design or material choices that result from EPR fees, eco-modulated fees, or the existence of EPR policy for packaging. The team also modeled a hypothetical scenario to quantify the value of eco-modulation incentives to provide some context to consider the question as to whether such incentives would be significant enough to stimulate design choices.