办公室 (bànfāng shì) literally means 'place for handling public affairs' — 办 (bàn) means 'to handle, to manage', 公 (gōng) means 'public, official', and 室 (shì) means 'room, chamber'. Together, they refer to a dedicated space where administrative, professional, or business work is carried out. It is most commonly used for workplaces in companies, schools, government agencies, or hospitals — not just the physical room but often the team or department that occupies it.

This term is neutral in register and widely used across formal and informal contexts. You’ll hear it in daily conversation ('Where’s your office?'), on signage ('Human Resources Office'), and in official documents. Unlike some English uses of 'office', 办公室 rarely implies the entire organization — it usually refers to the physical workspace or the immediate functional unit (e.g., 'the teacher’s office'). It does not mean 'bureau' or 'government ministry' — those are typically called 局 (jú) or 部 (bù).