The report titled "FEASIBILITY STUDY: INTRODUCING “ONE-IN-ONE-OUT” IN THE EUROPEAN COMMISSION" presents a feasibility study on introducing a One-in-One-Out (OIXO) rule in the European Commission. The study was conducted by the Centre for European Policy Studies and was presented to the German Ministry for Economic Affairs and Energy. The report covers the experience of EU and OECD countries with OIXO rules and burden reduction targets. The study finds that OIXO rules have been introduced in several EU Member States, including Austria, Denmark, Finland, France, Germany, Hungary, Italy, Latvia, Lithuania, Portugal, Spain, Sweden, and the United Kingdom. The report also notes that several EU countries are considering introducing OIXO rules, while others have no experience with these rules. The study also explores the experience of EU and OECD countries with burden reduction targets and finds that several countries have implemented these targets, including Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Spain, Sweden, and the United Kingdom.