Data source(s) used: Labour force survey: from the labour force survey Istat derives its official estimates of the number of employed persons and job-seekers, as well as information about the main labour supply aggregates, such as occupation, economic activity area, hours worked, contract types and duration and training. Istat collects the information each quarter by interviewing a sample of nearly 77,000 households, representing 175,000 individuals who are resident in Italy, even if they are temporarily abroad. Households usually living abroad and permanent members of communities (religious institutes, military barracks, etc.) are not included. The survey has been updated over the years to take into account continual transformations in the labour market on the one hand, and the growing information requirements of users regarding the social and economic reality of our nation, on the other. The most recent change was undertaken at the beginning of in 2004 in line with European Union regulations. The current sample survey is continuous insofar as information is collected during every week of the year and no longer during a single week per quarter. The results are still disseminated on a quarterly basis, except for provincial data which are disseminated annually. A significant feature of the survey is the establishment of new criteria for identifying employed and unemployed individuals,as well as a far-reaching reorganisation of the data collection and production process. To make new estimates comparable with estimates referring to previous years, Istat has reconstructed the time series since the fourth quarter of 1992. Data have been updated since 2nd march 2015 due to the statistical back-recalculation of population time series, based on Census results, disseminated the 14th January 2015. Monthly data were recalculated from January 2004 to December 2014; quarterly data from second quarter 2002 to third quarter 2014; annual data from year 2002 to 2013.