Formal to Superior
Workplace · Reporting
You
申し訳ありません。私のミスで○○に誤りがございました。至急対応いたします。
もうしわけありません。わたしのみすで○○にあやまりがございました。しきゅうたいおういたします。
I'm very sorry. There was an error in [area] due to my mistake. I will address it immediately.
Romaji: Moushiwake arimasen. Watashi no misu de [area] ni ayamari ga gozaimashita. Shikyu taiou itashimasu. / Reply Romaji: Wakarimashita. Taiou o onegai shimasu. Keika o houkoku shite kudasai.
Reply
わかりました。対応をお願いします。経過を報告してください。
わかりました。たいおうをおねがいします。けいかをほうこくしてください。
Understood. Please handle it. Keep me updated on the progress.
Gesture & etiquette
Stand when delivering this in person. Bow at 45 degrees. Keep the explanation brief — one sentence on the error, one on the remedy. Do not over-explain or list mitigating factors until the superior asks.
In Japanese workplace culture, reporting your own mistake immediately (before it is discovered) is considered far more honourable than having it found out. Pair the apology with a concrete action statement ('I will address it immediately') to show accountability, not just regret.