Was heißt »Offizium« auf Englisch?

Das Substantiv Offizium lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Synonyme

She used to work at the post office.
He used to work at the post office.
He left the office very early.
Since Tom always drives to work and sits all day in the office, he's getting fatter and fatter.
He decided not to buy the house because, first of all, it was too expensive, and secondly, it was too far from his office.
"Is there a post office around here?" "Yes, just take a right at that intersection up there."
As a rule, a term of office lasts four years.
There was a queue in the post office.
There was a queue at the post office.
"I don't want to have this discussion." "Yeah, I bet you don't." "Oh, get the hell out of my office." "How about out of your life?" "Even better!"
I caught them snogging in my office.
Where's the ticket office?
I don't mind popping into the post office for you. It's on my way.
It was less than a kilometre to the village post office.
Where is the lost property office?
Turn left at the end of the road. The entrance to the office is ten metres further along.
During his term of office, a great many new laws were passed.
They sent us to the factory's admin office.
She's just been to the post office to pick her parcel up.
She's just been to the post office to pick up her parcel.