lǎi-khûn內勤

indoor service

indoor service; deskwork; internal or office work (as distinguished from work carried on mainly outside the office); office staff

English Wiktionary, “內勤” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%85%A7%E5%8B%A4 · confidence: Medium (Wiktionary, Hokkien)