Taxing Wages provides unique information on income tax paid by workers and on social security contributions levied upon employees and their employers in OECD countries. In addition, this annual publication specificies family benefits paid as cash transfers. Amounts of taxes and benefits are detailed programme by programme, for eight household types which differ by income level and household composition. Results reported include the marginal and effective tax burden for one- and two-earner families and total labour costs of employers.These data on tax burdens and cash benefits are widely used in academic research and in the preparation and evaluation of social and economic policy making. Taxing Wages 2010 includes a special feature entitled a Special Feature entitled: "Wage income tax reforms and changes in tax burdens: 2000-2009."ALSO AVAILABLE ON CD-ROM AND ON LINE The data in this publication are also available on line via www.oecd-ilibrary.org under the title Taxing Wages, OECD Tax Statistics (http: //dx.doi.org/10.1787/ctpa-twg-data-en)An offline edition of the database, providing data in CSV and PC-Axis formats is available on CD-ROM under the title OECD Tax Statistics 2010, Volume II, Taxing Wages