• Data reference period (Month)
• Place of residence (Portugal)
• Earnings components
• Tradable nature of the goods and services produced

• NON-MARKET OUTPUT:  Output that is provided to other units for free or at prices that are not economically significant.
• -:  -
• 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).
• -:  -
• MARKET OUTPUT:  Output that is disposed of on the market or intended to be disposed of on the market.
• 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.
• BASIC REMUNERATION:  The gross amount, before deduction of taxes and social security contributions, in cash or in kind, paid regularly in the reference period and corresponding to the normal working period.

Total gross monthly earnings per employee = Total gross earnings (all components) paid by employers on month m / Number of employees on month m