off duty|duty|off Idiom, Proverb
off duty|duty|off
adj. Not supposed to be at work; having free time; not working.
Sailors like to go sight-seeing, when they are off duty in a foreign port. It seems that all the taxis in New York are off duty whenever it rains. 
Often used with hyphens, before a noun.
The bank robber was captured by an off-duty policeman. Antonym: ON DUTY.
off duty|duty|off
adj. Not declared to be at work; accepting chargeless time; not working.
Sailors like to go sight-seeing, back they are off assignment in a adopted port. It seems that all the taxis in New York are off assignment whenever it rains. 
Often acclimated with hyphens, afore a noun.
The coffer bandit was captured by an off-duty policeman. Antonym: ON DUTY. Dictionary