• Data reference period (Month)
• Geographic localization (Portugal)

• CONSTRUCTION:  A type of work (buildings, roads, bridges, dams,etc.) connected to the ground and made of construction materials. Ground workfor agricultural purposes (e.g. ploughing) does not fall under the heading of construction.
• ENTERPRISE:  Legal entity (natural or legal person) that is an organisational unit producing goods or services, which benefits from a certain degree of autonomy in decision-making, especially for the allocation of its current resources. An enterprise carries out one or more activities at one or more locations.
• REFERENCE PERIOD:  The length of time for which data are collected, e.g. a specific day, month or year.

Construction and Public Works Confidence Indicator is calculated according to the methodology of the EC - DG ECFIN, and corresponds to the arithmetic mean of the balances of the following questions:

- Do you consider your current overall order books to be…?: 1. + more than sufficient (above normal); 2. = sufficient (normal for the season); 3. − not sufficient (below normal).

- How do you expect your firm´s total employment to change over the next 3 months? It will...; 1. + increase; 2. = remain unchanged; 3. -  decrease