Used both attributively and predicatively to describe someone not currently working.
Translations
An off-duty paramedic helped at the scene of the accident.
Парамедик вне службы помог на месте происшествия.
Definitions
Not engaged in one’s official duties or work; not working. An off-duty paramedic helped at the scene of the accident.
Functions as an adverbial expression meaning 'while not working'.
Translations
He prefers to stay at home when he is off-duty.
Он предпочитает оставаться дома, когда находится вне службы.
Definitions
During a period when one is not working. He prefers to stay at home when he is off-duty.