The native-born unemployment rate is calculated as the share of unemployed native-born persons aged 15-64 in the native-born labour force (the sum of employed and unemployed native-born) of that same age. Unemployed persons consist of those who report that they are without work during the reference week, are available for work and have taken active steps to find work during the four weeks preceding the interview. Immigrant workers are affected to a greater extent by unemployment than native-born workers in European countries that have traditionally received migrants. This indicator is measured as a percentage of native-born labour force.