The survey is a part of the joint harmonized European Union programme of business and consumer surveys (the latest relevant normative is the Commission’s decision: COM (2006) 379 , 2006 July 12). The survey provides information about managers' assessments and expectations on the main economic variables in their company (e.g. assessments on order books and construction activity, expectations on orders, etc.). The reporting unit and the sample unit is the firm. The target universe is made up of Italian firms with three or more employees classified in Section F in NACE rev.2 . The survey is monthly and since November 2011 data collection technique used is CATI (Computer Assisted Telephone Interviewing) . The sample design is stratified by economic sectors (identified by the divisions of section F in NACE rev.2), geographic partitions and firm sizes (in terms of employees). The sampling frame is based on ASIA archive (Statistical archive of active firms). The survey is addressed to a panel of 700 firms. The confidence indicator, according to the EU methodology, is calculated as the simple arithmetic average of the balances of answers to the question on assessments on order books and to the question on the expectations on employment. The confidence climate index is released for the whole sector and for the sub-sectors (the three divisions of NACE (rev.2) – section F: construction of buildings, civil engineering and specialized construction activities). All series are seasonally adjusted using the Tramo-Seats method.