Apologies in Japanese Business: How to Use “Sumimasen” and “Mōshiwake gozaimasen”
More than just saying “sorry,” Japanese business apologies are expressions of trust, accountability, and respect.
Learn how to use sumimasen and mōshiwake gozaimasen naturally and professionally in business situations, with clear examples, email phrases, and cultural insights you can apply right away.
?️ Updated: November 15, 2025
Quick Definition
すみません (sumimasen) is a light apology that can also mean “thank you” or “excuse me.” 申し訳ございません (mōshiwake gozaimasen) is the standard formal phrase for professional or client-facing apologies.
In romaji, mōshiwake gozaimasen is often typed as "moshiwake gozaimasen" or "moushiwake gozaimasen".
- Use sumimasen for: minor delays, small inconveniences, soft thanks, polite attention-getting
- Use mōshiwake gozaimasen for: external emails, serious mistakes, official notices and statements
What Japanese Apology Phrases Really Mean
Japanese apology phrases form a three-level hierarchy in business communication. Each level reflects a different degree of responsibility, social distance, and formality. Understanding this “ladder” makes choosing the right expression much easier.
1) すみません
(sumimasen): Light apology & soft courtesy
すみません is a flexible phrase that can mean “sorry,” “thank you,” or “excuse me.” In business settings, it is used for light, everyday apologies such as small delays, minor trouble, or quick acknowledgements in chat or conversation.
- common in spoken Japanese
- friendly and approachable tone
- not appropriate for formal written apologies
2) 申し訳ございません
(mōshiwake gozaimasen): Standard formal apology
申し訳ございません is the standard phrase for professional and official apologies. It expresses accountability and respect, and is widely used in emails to clients, customers, and external partners.
- suitable for business email, reports, and customer service
- appropriate for moderate to serious issues
- can also be used in spoken form in formal situations
3) お詫び申し上げます
(owabi mōshiagemasu): High-severity official apology
お詫び申し上げます is the most formal apology among the three. It is typically used in written announcements, public statements, press releases, and official notices when an issue is significant or affects customers or the general public.
- rarely used in spoken conversation
- appears in formal documents, notices, and corporate statements
- indicates a high level of responsibility and seriousness
すみません → light / spoken
申し訳ございません → standard business apology (email / spoken)
お詫び申し上げます → official, high-severity written apology
How to Use Them Naturally in Business
In Japanese workplaces, the expression you choose depends on the situation, your relationship with the other person, and how serious the issue is. Here are the most common and natural patterns used in real business contexts.
1) Internal spoken communication (coworkers)
For everyday conversations inside the company, apologies are generally light and brief. すみません (sumimasen) is the most natural choice for small mistakes, minor delays, or when lightly interrupting someone.
- Small mistake or delay → すみません。
- Getting someone’s attention → すみません、今よろしいでしょうか。
- Interrupting someone’s work → すみません、お時間よろしいですか。
2) More formal spoken situations inside the company
When the issue is more serious, such as missing a deadline or causing extra work, it is natural, even in spoken Japanese, to use the formal apology 申し訳ございません.
- Missing a deadline → 申し訳ございません。 遅くなりました。
- Causing inconvenience → 本当に申し訳ございません。
3) Emails to coworkers (internal communication)
Email is slightly more formal than spoken conversation. すみません is still acceptable for small issues, but 申し訳ございません sounds more professional and is preferred when the mistake has some impact.
- Minor oversight → すみません。 資料の 添付を 忘れていました。
- More formal tone → 申し訳ございません。 資料の 添付を 忘れていました。
Note: The sentence “資料の 添付を 忘れていました。” means “I forgot to attach the document.”
4) Emails to clients or customers (external communication)
For any communication with clients or customers, the safest and most appropriate expression is 申し訳ございません. It signals professionalism and responsibility.
- Late reply → ご連絡が遅くなり、 申し訳ございません。
- Incorrect information → 先ほどのご案内に 誤りがありました。 大変申し訳ございません。
For major issues such as system outages, product defects, or compliance problems, the strongest expression is used: お詫び 申し上げます.
- Serious trouble → システム障害により ご迷惑をおかけし 大変申し訳ございません。 心よりお詫び申し上げます。
Note: “システム障害により ご迷惑をおかけし 大変申し訳ございません。 心より お詫び申し上げます。” means “I sincerely apologize for the inconvenience caused by the system outage. We deeply regret the trouble this has caused.”
Formal Apology Email (5 Steps)
A professional Japanese apology email usually follows a clear structure. Here is a simple 5-step framework you can use in business settings.
- Opening greeting (standard business opening)
- Apology line (use 申し訳ございません)
- Status or situation (what is known now)
- Next steps / timeline (when you will update)
- Closing apology (reaffirm responsibility)
Example: Natural Japanese apology email
平素よりお世話になっております。
この度はシステム障害により ご迷惑をおかけし、 誠に申し訳ございません。
現在、 状況の確認を進めております。
復旧の見通しにつきましては、 判明し次第 あらためてご案内申し上げます。
この度はご不便をおかけしておりますこと、 重ねて深くお詫び 申し上げます 。
We sincerely apologize for the inconvenience caused by the recent system outage. We are currently investigating the situation and will update you as soon as we have more information. We deeply regret the trouble this has caused.
Ready-to-Use Templates
Delivery delay
納品が予定より遅れることとなり、誠に申し訳ございません。新しい納期は◯月◯日となります。
We sincerely apologize for the delay in delivery. The updated delivery date is …
Late reply
ご返信が遅くなり、 申し訳ございません。 内容を確認し、◯日までにご連絡いたします。
We apologize for the delayed reply. We will review your message and get back to you by …
Billing issue / Invoice mistake
請求書に誤りがあり、 申し訳ございませんでした。 訂正いたしましたので、あらためてお送りいたします。
We sincerely apologize for the mistake in the invoice. We will send the corrected invoice shortly.
Common Mistakes (and Fixes)
Typical pitfalls and how to fix them.
| Mistake | Why it’s wrong | Better option |
|---|---|---|
| Using sumimasen for everything | Too light for serious problems in business emails. | Use mōshiwake gozaimasen when you cause trouble, delay, or a mistake. Example:
「申し訳ございません。◯◯いたします。」 |
| Using gomennasai in business settings | Too casual or childish for clients, customers, or formal emails. | Use mōshiwake gozaimasen or taihen mōshiwake gozaimasen in professional contexts. Example:
「大変申し訳ございません。」 |
| Starting with “thank you for your patience” (direct translation from English) | In Japanese business emails, thanking the reader before apologizing can feel like avoiding responsibility. The natural order is apology → explanation → appreciation. | Apologize first using a natural, polite one-sentence form. Example:
「お待たせして大変申し訳ございません。」 |
? Remember: In Japanese business, say sorry first, then explain and show your next action.
The Psychology Behind the Phrase
In Japanese communication, apologies do more than express regret. They help maintain harmony, protect the relationship, and show empathy toward the other person’s time or feelings. Expressions like 申し訳ございません (mōshiwake gozaimasen) carry humility and awareness of inconvenience, helping rebuild trust and keep communication smooth.
Mini Quiz
Q1. Formal apology to a client. Which is correct?
- すみません (sumimasen)
- 申し訳ございません (mōshiwake gozaimasen)
Show Answer
Answer: ② 申し訳ございません.
Q2. Which apology is too casual for business?
- ごめんなさい (gomennasai)
- 申し訳ございません (mōshiwake gozaimasen)
Show Answer
Answer: ① ごめんなさい is too casual for business contexts.
Q3. When you are running late, which apology sounds more natural in Japanese?
- お待たせして、ありがとうございます。
- お待たせして、 大変 申し訳ございません。
Show Answer
Answer: ② In Japanese, apologizing rather than thanking sounds more natural when acknowledging a delay.
FAQ
Is “sumimasen” an apology or a thank-you?
すみません (sumimasen) can mean both “I’m sorry” and “thank you,” depending on the situation and tone. For minor trouble or everyday speech, it works well. For formal emails or serious issues, prefer 申し訳ございません (mōshiwake gozaimasen).
“mōshiwake gozaimasen” vs “mōshiwake arimasen”?
Both are polite, but 申し訳ございません (mōshiwake gozaimasen) is more formal and respectful. Use it for clients, external partners, and written communication. 申し訳ありません (mōshiwake arimasen) is slightly softer and more common in spoken language or within your workplace.
When should I use “sumimasen” vs “mōshiwake gozaimasen”?
Use すみません (sumimasen) for small inconveniences or casual situations. Use 申し訳ございません (mōshiwake gozaimasen) when the impact is bigger, or when writing to someone outside your company. This distinction keeps your tone appropriate and professional.
Next steps: practice in Business Japanese courses
Practice mōshiwake gozaimasen and sumimasen in real workplace situations with our Business Japanese teachers.
ISHIBASHI Kaori
Business Japanese A｜Apologies, Polite Requests, and Essential Keigo (B1–C1)
Practice natural apology language for delays, incidents, and follow-ups using mōshiwake gozaimasen and sumimasen.
YAMAMOTO Hiroshi
Business Japanese B｜Advanced Keigo and Formal Apologies (B2–C1)
Focus on high-stakes apologies and written statements, including cause, countermeasures, and follow-up.
Japonin Deep Dive Series
Since 2006, Japonin (JOI) has provided online Japanese lessons to over 6,000 learners worldwide, guided by our team of qualified and experienced teachers.
Written by Chiho Kamioka Founder
Since founding Japonin (JOI) in 2006, I have focused on helping learners worldwide build confidence in Japanese.
With nearly 20 years of online teaching experience, I enjoy explaining how Japanese expressions balance apology, gratitude, and humility in everyday and business communication.