thih-pn̄g-uánn鐵飯碗

iron rice bowl

iron rice bowl; secure job; job for life; job security

English Wiktionary, “鐵飯碗” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E9%90%B5%E9%A3%AF%E7%A2%97 · confidence: Medium (Wiktionary, Hokkien)