The OECD Joint Group on Trade and Competition was established in 1996 to help deepen understanding of the complex issues arising at the interface of these two policy domains against a globalising backdrop and explore how best to ensure that both sets of policies are mutually supportive in promoting greater economic efficiency. This publication, the third to arise from Joint Group activities, brings together a series of working papers that Member countries’ trade and competition authorities have considered during the past two years. The objective of the publication is to share with a broader audience the tangible progress made recently by the two communities in the analysis of important issues at the interface between trade and competition policies.