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A Comprehensive Guide for Foreign Travelers in Japan: From Etiquette to Emergency

Welcome to Japan (日本, Nihon/Nippon)! A country of unparalleled beauty, rich culture, and remarkable safety. To ensure your visit is memorable for all the right reasons, it’s crucial to understand and respect its laws and customs. While Japan is incredibly safe, its legal system is vastly different from many Western countries, particularly concerning the rights of the accused.

This guide provides an overview of essential travel information and a detailed, step-by-step explanation of the Japanese legal process should you or someone you know be arrested.

Part 1: Proactive Travel – Staying Safe and Aware

Before diving into the legal specifics, let’s cover the basics that will help you avoid trouble.

Key Japanese Laws Every Traveler Must Know

Japan has a zero-tolerance policy on many offenses that might be treated more leniently elsewhere.

1. Drug Offenses: This is the most serious offense for a foreigner. Japan’s stance on illegal drugs is unequivocal.
   • Cannabis: Marijuana is illegal in Japan. Do not bring any cannabis products to Japan. Even trace amounts of THC detected through state of the art testing methods will result in immediate arrest and long term detention or prison sentence(s) by the Japanese customs, police, prosecutors, and courts. A “medical marijuana” prescription from your home country will not be a valid defense.
   • Other Substances: Possession, use, or trafficking of any illegal stimulant, narcotic, or psychotropic drug carries severe penalties, including long prison sentences followed by deportation.
   • Prescription Medication: Some common over-the-counter medications in other countries (e.g., those containing Pseudoephedrine, like Sudafed or Vicks inhalers) are illegal in Japan. Always check with the Japanese Ministry of Health, Labour and Welfare or your nearest Japanese embassy before travel to see if you need to apply for a Yakkan Shōmei (薬監証明), a certificate for importing medication.
2. Identification:
   • Foreign Residents: If you have a Residence Card (在留カード, Zairyū Kādo), you are legally required to carry it at all times.
   • Tourists: You must carry your passport at all times. Failure to present it upon request by law enforcement can lead to arrest.
3. Alcohol and Public Conduct:
   • Drinking Age: The legal drinking age is 20.
   • DUI (Driving Under the Influence): Japan has a zero-tolerance policy for driving under the influence. The legal limit is very low (0.03% BAC). Penalties are severe and can even apply to passengers in the car who knew the driver was intoxicated.
   • Public Intoxication: While drinking in public is generally legal (e.g., during a park picnic), disruptive or disorderly conduct due to intoxication can lead to arrest.
4. Assault and Violence: Getting into a bar fight or any physical altercation can lead to serious assault charges. Unlike in some countries where self-defense claims may be straightforward, in Japan, both parties in a fight are often arrested.
5. Theft: Shoplifting, even of a low-value item, is taken very seriously and will almost certainly result in arrest and prosecution.
6. Visa Overstay: Illegally overstaying your visa is a criminal offense that will result in detention and deportation.

Proactive Steps for a Smooth Trip

• Register Your Trip: Enroll in your country’s traveler program (e.g., the U.S. State Department’s STEP program). This makes it easier for your embassy to contact you in an emergency.
• Emergency Contacts: Keep a physical and digital copy of your emergency contacts, including your embassy or consulate’s 24/7 phone number.
• Insurance: Have comprehensive travel insurance that includes legal assistance coverage.

Part 2: The Unthinkable – The Japanese Arrest and Detention Process

If you are arrested in Japan, the system you enter is fundamentally different from what you may be used to. The principle of “innocent until proven guilty” exists in law, but the process heavily favors the prosecution. The conviction rate in Japan for cases that go to trial is over 99%.

Here is the process, step-by-step.

Phase 1: The Arrest (逮捕, taiho) and Initial 72 Hours

• The Arrest: When you are arrested, you will be taken to a police station.
• Right to Remain Silent: You have the right to remain silent. It is highly advisable to use it. Politely state that you will not answer questions without a lawyer present.
• NO Right to a Phone Call: You do not have the right to a phone call to family, friends, or your employer. You only have the right to call your embassy/consulate and to meet with a lawyer.
• The First 48 Hours (Police Custody): The police have 48 hours to interrogate you and investigate the case. You will be held in a police detention cell (ryūchi-jō, 留置場). During this time, they will build their case to hand over to the prosecutor.
• The Next 24 Hours (Prosecutor’s Custody): After 48 hours, the police must transfer your case and you to the Public Prosecutor’s Office (検察庁, kensatsu-chō). The prosecutor has 24 hours to review the case and decide whether to request further detention from a judge.

Total Initial Period: Up to 72 hours.

Phase 2: Pre-Indictment Detention (勾留, kōryū) – The “23-Day” System

This is the most critical and challenging phase for a foreign national.

• Detention Request: If the prosecutor believes there is sufficient cause (e.g., you might flee or destroy evidence), they will ask a judge for a detention order (kōryū). This is almost always granted.
• The First 10-Day Detention: The judge can grant an initial 10-day detention period. During this time, interrogations will continue. Crucially, your lawyer is not allowed to be present during these interrogations. The pressure to confess is immense. A confession is considered the “king of evidence” in Japan, and securing one is the primary goal of this period.
• The Second 10-Day Extension: The prosecutor can request one 10-day extension, which is, again, almost always granted.
• Total Pre-Indictment Detention: 48 hours (police)+24 hours (prosecutor)+10 days (initial detention)+10 days (extension)=Up to 23 days.

During these 23 days, you are largely cut off from the outside world, except for brief visits from your lawyer and embassy staff.

Phase 3: Indictment (起訴, kiso) or Release

At the end of the detention period, the prosecutor must decide one of three things:

1. Indict (起訴, kiso): Formally charge you with the crime. This happens in the vast majority of cases where a suspect is detained for the full period. Once indicted, you move into the trial phase.
2. Release without Prosecution (不起訴, fukiso): Release you if there is insufficient evidence.
3. Suspend Prosecution (起訴猶予, kiso yūyo): Release you even if there is sufficient evidence, often for minor offenses where the suspect has confessed and shown remorse (e.g., by paying a victim). This is a common and often favorable outcome for minor shoplifting cases.

Phase 4: Post-Indictment – Bail, Trial, and Sentencing

• Bail (保釈, hoshaku): After indictment, you can apply for bail. Bail is not guaranteed and often requires strict conditions and a significant financial deposit.
• Trial Preparation: It can take several months for the trial to begin. During this time, you will work with your lawyer to prepare your defense.
• The Trial (裁判, saiban): Trials are conducted by a panel of judges (or a judge and lay judges for serious crimes), not a jury of your peers. The process is formal and relies heavily on written documents and confessions gathered during the pre-indictment phase.
• Sentencing: If found guilty, sentences can range from fines and suspended sentences (執行猶予, shikkō yūyo) to lengthy prison terms. A suspended sentence means you avoid prison time if you maintain good behavior for a specified period.
• Deportation: Regardless of the sentence, a criminal conviction will almost certainly lead to your deportation from Japan and a ban on re-entry.

Part 3: A Guide for Family and Friends Abroad

Discovering a loved one has been arrested in a foreign country is terrifying. Here is your action plan.

Step 1: Immediate Action – Contact the Embassy

This is your first and most important call. Contact your country’s embassy or the nearest consulate in Japan.

• What Your Embassy CAN Do:
  • Confirm the arrest and whereabouts of your loved one.
  • Visit the detained person and monitor their well-being.
  • Provide a list of local, English-speaking lawyers.
  • Help facilitate communication between you and the detainee (passing messages, etc.).
  • Explain the local legal system.
• What Your Embassy CANNOT Do:
  • Get them out of jail.
  • Provide legal advice or represent them in court.
  • Pay their legal or medical bills.
  • Intervene in the Japanese judicial process.

Step 2: Hire a Lawyer (弁護士, bengoshi) Immediately

This is the single most critical step to protecting your loved one’s rights.

• Finding a Lawyer: Use the list provided by your embassy. You can also contact the Japan Federation of Bar Associations (JFBA) which may offer referrals. Look for a criminal defense lawyer who is fluent in your language and has experience representing foreign nationals.
• The Lawyer’s Role: A good lawyer will immediately visit the detainee, advise them of their rights (especially the right to remain silent), challenge the detention, and begin building a defense strategy. They are your loved one’s lifeline to the outside world.

Step 3: Communication and Support

• Communicating with the Detainee: Direct communication will be difficult. You cannot call them. You can write letters (which will be read and censored) or pass messages through the embassy or lawyer.
• Sending Funds: Your loved one will need money for legal fees and potentially for small comforts at the detention center (sashi-ire, 差し入れ). The lawyer can advise on the best way to transfer funds.
• Stay Informed: Maintain regular contact with the lawyer and the consular officer handling the case. They are your primary sources of information. Be patient; the process is slow.

Key Contacts for Assistance

Emergency in Japan:

• Police: 110
• Fire/Ambulance: 119

Major Embassies & Consulates in Japan (24/7 numbers for emergencies):

• U.S. Embassy Tokyo: (+81) 03-3224-5000 | Website
• British Embassy Tokyo: (+81) 03-5211-1100 | Website
• Australian Embassy Tokyo: (+81) 03-5232-4111 | Website
• Embassy of Canada to Japan: (+81) 03-5412-6200 | Website
• For other nationalities, please search for “[Your Country] Embassy in Japan.”

Legal Resources:

• Japan Federation of Bar Associations (JFBA): Offers information and can help find a lawyer. Their website has an English section.
• Houterasu (The Japan Legal Support Center): Provides free legal information and can refer you to lawyers who may offer services on a payment plan.

Conclusion: Your Key Actions in a Crisis

While the prospect of an arrest in Japan is daunting, being equipped with the right knowledge is your most powerful tool. The Japanese legal system operates on principles that can be startlingly different from those in your home country, and passivity is not an effective strategy.

If you find yourself in this difficult situation, remember these four critical steps above all else:

1. Remain Silent: Your right to silence is your strongest initial defense. Politely but firmly refuse to answer questions, sign any documents you don’t fully understand, or make any statements until you have spoken with a lawyer.
2. Demand Consular Access: You have a legal right to contact your country’s embassy or consulate. Insist on this right. They are your primary lifeline to the outside world and your family back home.
3. Secure a Lawyer Immediately: This is the single most important action you can take. A qualified, English-speaking criminal defense lawyer is not a luxury—it is an absolute necessity to navigate the system, protect you during interrogations, and build a case for your release or defense.
4. Trust the Process (and Your Lawyer): The pre-indictment detention period is long and designed to be isolating. Trust your lawyer’s guidance, rely on your embassy for support, and be patient.

Japan is a wonderful and overwhelmingly safe country to visit. By respecting its laws and knowing these essential steps, you are best prepared for any eventuality, ensuring you can focus on the positive aspects of your travels.