Den kompetente institution i en medlemsstat , efter hvis lovgivning kontantydelser beregnes paa grundlag af en gennemsnitsindtjening , fastsaetter denne gennemsnitsindtjening alene paa grundlag af de konstaterede indtjeningsbeloeb i de perioder , der er tilbagelagt efter den naevnte lovgivning .
The competent institution of a Member State whose legislation provides that the calculation of cash benefits shall be based on average earnings shall determine such average earnings exclusively by reference to earnings confirmed as having been paid during the periods completed under the said legislation.