on duty
Ieri non ero neanche in servizio.
I wasn't even on duty yesterday.
— Pixote, la legge del più debole (1980)
Lo accuso di possesso, e di essere intossicato in servizio.
I am charging him with possession and with being intoxicated while on duty.
— Codice d'onore (1992)
What time do you go to work?
I'm on duty now.
Io non sono in servizio questa settimana.
I’m not on duty this week.
I was on duty.