Safety comes first
The phrases that matter most are the ones for stopping something, warning someone and reporting a hazard. They are short, they are said loudly, and politeness is not the priority.
This is worth stating explicitly because learners default to polite forms and hesitate over register. In a safety situation, being immediately understood is the entire requirement.
| Japanese | Romaji | Meaning |
|---|---|---|
| 止めてください！ | Tomete kudasai! | Please stop! |
| 危ない！ | Abunai! | Danger! |
| 下がってください。 | Sagatte kudasai. | Please stand back. |
| 触らないでください。 | Sawaranaide kudasai. | Do not touch it. |
| けが人がいます。 | Keganin ga imasu. | Someone is injured. |
| 緊急停止しました。 | Kinkyū teishi shimashita. | I have made an emergency stop. |
Receiving instructions
Instructions on a factory floor arrive quickly, over noise, often while the person is demonstrating. The expectation is that you repeat the key points back, which is standard practice and not a concession to language ability.
Numbers and quantities are what to confirm. A misheard quantity is the most common and most expensive error.
| Japanese | Romaji | Meaning |
|---|---|---|
| 確認します。この順番でよろしいですか。 | Kakunin shimasu. Kono junban de yoroshii desu ka. | Let me confirm. In this order, correct? |
| 三十個ですね。 | Sanjukko desu ne. | Thirty units, correct? |
| もう一度お願いします。 | Mō ichido onegai shimasu. | Once more, please. |
| やって見せていただけますか。 | Yatte misete itadakemasu ka. | Could you show me? |
| 分かりました。やってみます。 | Wakarimashita. Yatte mimasu. | Understood. I will try. |
| すみません、聞き取れませんでした。 | Sumimasen, kikitoremasen deshita. | Sorry, I did not catch that. |
Asking for a demonstration is often faster than asking for a repetition, and on a factory floor it is the normal way to resolve a misunderstanding.
Reporting a problem
Reporting is the part of the job where accuracy matters most, and Japanese workplaces have a strong convention of reporting early rather than resolving quietly. Reporting a small problem is always correct.
The structure is what, where, when and whether the line is affected, in that order.
| Japanese | Romaji | Meaning |
|---|---|---|
| 不良品が出ました。 | Furyōhin ga demashita. | There is a defective item. |
| 機械が止まりました。 | Kikai ga tomarimashita. | The machine has stopped. |
| 変な音がしています。 | Hen na oto ga shite imasu. | It is making a strange noise. |
| 何個か不良がありました。 | Nanko ka furyō ga arimashita. | There were several defective ones. |
| ラインは動いています。 | Rain wa ugoite imasu. | The line is still running. |
| 報告が遅れて、すみません。 | Hōkoku ga okurete, sumimasen. | Sorry for the late report. |
The shift handover
Handovers are short and structured, and preparing the three points in advance turns an anxious moment into a routine one. Production numbers, problems and outstanding items are what the incoming shift needs.
Write it down before the handover. A note in front of you removes any need to compose Japanese while people are waiting.
| Point | What to say | Detail |
|---|---|---|
| Production | How many completed | The number |
| Problems | What went wrong | What you did |
| Outstanding | What is unfinished | Where it stands |
| Machines | Anything unusual | Noises, stops |
| Materials | What is running low | How much is left |
Three sentences covering the first three rows is a complete handover. Anything more is detail the incoming shift can ask for.
The daily meeting
Many factories start the shift with a short standing meeting covering targets, safety reminders and announcements. It is mostly listening, delivered quickly, and you may be asked to confirm something.
Knowing the recurring vocabulary means you can follow it without parsing every sentence.
| Japanese | Romaji | Meaning |
|---|---|---|
| 本日の目標は千個です。 | Honjitsu no mokuhyō wa sen-ko desu. | Today's target is one thousand units. |
| 安全確認をお願いします。 | Anzen kakunin o onegai shimasu. | Please carry out safety checks. |
| 昨日、不良が出ました。 | Kinō, furyō ga demashita. | There were defects yesterday. |
| 何か質問はありますか。 | Nanika shitsumon wa arimasu ka. | Are there any questions? |
| 体調が悪い人はいますか。 | Taichō ga warui hito wa imasu ka. | Is anyone feeling unwell? |
| 本日もよろしくお願いします。 | Honjitsu mo yoroshiku onegai shimasu. | Let us have a good day. |
Drilling for noise
A factory floor is loud, which degrades exactly the length distinctions Japanese uses to separate words. A phrase produced with clear, full-length vowels survives the noise; one produced marginally does not, and on a factory floor that can matter.
That makes the pronunciation lab unusually relevant to this job. Drilling long vowels and the small tsu on your own safety and reporting phrases builds the margin those phrases need to land over machine noise.
The handover and the report are worth roleplaying separately, since both happen under time pressure with people waiting. Running them with an AI Sensei in Unihongo's immersive 3D classroom until they arrive without composition takes very little time and removes most of the daily stress of the job.
If you learn nothing else, learn the stop phrases. Everything else on this page can be handled slowly; those cannot.