This publication was jointly prepared by the Asian Development Bank Institute (ADBI), the Organisation for Economic Co-operation and Development (OECD), and the International Labour Organization (ILO).For the Asian Development Bank Institute (ADBI) and International Labour Organization (ILO) the responsibility for opinions expressed and arguments employed in signed articles, studies and other contributions rests solely with their authors, and publication does not constitute an endorsement or official view by ADBI or ILO or their respective Board of Governors or the governments they represent, or their member countries or economies, of the opinions and arguments expressed in them. For the Organisation for Economic Co-operation and Development (OECD), the report has been prepared under the responsibility of the Secretary-General of the OECD and the opinions expressed and arguments employed herein do not necessarily reflect the official views of the Member countries of the OECD. The data included in this publication has been collected by the OECD. Neither ADBI, ILO nor the OECD, guarantees the accuracy of the data included in this publication and accepts no responsibility for any consequence of their use.By making any designation of or reference to a particular territory, city or geographic area, or by using the term "country" in this document, neither ADBI, ILO, nor OECD intend to make any judgments as to the legal or other status of any territory, city or area. This publication, as well as any data and any map included herein are without prejudice to the status of or sovereignty over any territory, to the delimitation of international frontiers and boundaries and to the name of any territory, city or area.Reference to names of firms and commercial products and processes does not imply their endorsement by ADBI, ILO, or OECD and any failure to mention a particular firm, commercial product, or process is not a sign of disapproval.The names of countries and territories used in this joint publication follow the practice of ADBI.ADB recognizes "China" as the People's Republic of China and "Korea" as the Republic of Korea.