As part of their advocacy activities or as part of their legal mandate, many competition authorities are involved in reviewing new and existing laws, rules and regulations with the aim of pointing out where barriers to competition might arise or be reinforced and of showing alternative ways of reaching the same policy goal with less competition restrictive means. The OECD Competition Assessment Toolkit provides valuable guidance for enforcers. We will introduce the toolkit and show where and how it has successfully been used. Experts from the OECD and OECD member countries and representatives from FAS Russia and invited CIS countries will present and share their experiences. Practical exercises will complement the sessions and will give an opportunity to practice and apply the toolkit principles.