The place where actions and tasks happen is the office. None of that happens at home. The office is more of an action / task place.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
Smoking is not allowed in this office.
There's not a dime of extra money in this office.
Let me quickly show you around the Tofugu office.