Writing Reports in Japanese: Structure, Style and Useful Phrases
A good Japanese work report puts the conclusion first, uses short bullet points, and follows a fixed shape: purpose, results, issues and next steps. Most internal reports are written in the plain である style or in short noun-ending phrases, while reports sent to clients often use polite です・ます. The main types you will write are daily reports (日報), meeting minutes (議事録), business trip reports (出張報告書) and incident reports. Clear, consistent wording matters more than elegant Japanese.
The basic structure
- Title and details: date, author, recipients.
- Purpose (目的): why this report exists, in one line.
- Conclusion or summary (結論・概要): the main point first. Japanese colleagues often read only this part.
- Details (詳細): what happened, with facts and figures.
- Issues (課題): problems, risks, things that did not go well.
- Next steps (今後の対応): who will do what, by when.
Many teams check content with the 5W1H questions (いつ、どこで、だれが、何を、なぜ、どのように). If one is missing, readers will ask.
Choosing the style
| Style | Example | Used for |
|---|---|---|
| Noun ending (体言止め) | A社との打ち合わせ実施。 | Bullet points, minutes, daily reports |
| Plain である | 納期は2週間遅れる見込みである。 | Formal internal reports |
| Polite です・ます | 納期は2週間遅れる見込みです。 | Reports to clients or senior managers, emails |
Pick one style per document and keep it. Mixing them is the most common mistake in reports written by learners. For the difference between styles in general, see casual vs polite Japanese.
Useful phrases
- 〜について、以下のとおりご報告いたします。 I report on … as follows.
- 結論から申し上げますと、 To start with the conclusion, …
- 〜の見込みです。 … is expected.
- 原因は〜と考えられます。 The cause is thought to be …
- 引き続き対応いたします。 We will continue to follow up.
- ご確認のほど、よろしくお願いいたします。 Please check and confirm.
Meeting minutes
Minutes in Japan usually record the date, attendees, agenda, decisions (決定事項) and action items (宿題・TODO), with owners and deadlines. Keep them factual and send them soon after the meeting. If you attend meetings in Japanese, see meetings with Japanese partners and speaking up in meetings.
Daily reports
Some teams ask for a short daily report: what you did, results, problems and plans for tomorrow. Three to five bullet points is often enough. Many are now written in chat tools; see Japanese chat messages at work.
Common mistakes
- Building up to the point instead of starting with it.
- Long paragraphs where bullet points are expected.
- Vague time words like 早めに (soon) instead of a date.
- Inconsistent terms, such as switching between two words for the same product.
- Too much keigo in an internal report, which slows reading.
How Hanabuddies can help
Our native Japanese tutors teach business writing online, using your own reports as material, and our proofreading service checks reports before you send them, with notes so you learn from the corrections. If you write in English and need a Japanese version, we can translate it. See Japanese proofreading and business Japanese lessons.