This is the 4780th most frequent Russian word.
заработная
"Заработная" translates to "earned" or "wage-related" in English.
Here, 'заработная' is used as an adjective to describe 'плата', indicating it's a financial term related to wages.
Её заработная плата выше, чем у коллег.
Her salary is higher than her colleagues'.
In this case, 'заработная' is part of a specialized phrase describing the value attributed to earnings in a figurative sense.
Заработная стоимость их труда была переоценена.
The earning value of their labor was overestimated.
Here, 'заработная' again modifies 'плата', connecting it specifically to wage concepts in an economic context.