This book addresses not only how lobbying can improve policymaking by providing valuable insights and data, but how it can also result in unfair advantages for vested interests if the scrutiny and standards are lax.This report reviews the experiences of Australia, Canada, Hungary, Poland, the UK, and the United States with government regulations designed to increase transparency and accountability of lobbying activities. Current approaches, models, trends, and state-of-theart solutions are examined.This report is part of OECD"s efforts to promote integrity in the public sector by mapping governance and corruption risks and setting standards for cleaner, fairer, and stronger economies.