• Data reference period
• Geographic localization (NUTS -2013)

• FAMILY LABOUR FORCE:  People belonging to the household of a producer whowork on the holding and members of the producer¿s family who do not belong tohis/her household but work regularly on the holding.
• AGRICULTURAL HOLDING:  Technical-economic unit that uses common production factors such as labour, machinery, facilities, land, among others, fulfilling the following four conditions: 1) yield agricultural products or maintain, in good agricultural and environmental conditions, the lands that are no longer used for productive purposes; 2) reach or exceed a certain size (in area or number of animals); 3) be subject to a single management; 4) be located in a well-defined and identifiable area.
• REFERENCE PERIOD:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).

Sum of age of family labour force/ Number total of family labour force