超ちょう過か勤きん務むちょうかきんむMeanings1noun, noun which may take the genitive case particle 'no'overtime work; overtimeFormal term for working beyond regular hours, often used in official or business settings. More formal than 残業 (ざんぎょう).今こん月げつは超ちょう過か勤きん務むが多おおかった