Overtime Culture in Japan: What Foreigners Should Know

Japan's reputation for long working hours is no secret. Whether you've heard the term karoshi (overwork death) or seen images of salary workers sleeping on the train after midnight, the reality of Japanese overtime culture can be both surprising and concerning for newcomers. Understanding why overtime is so deeply embedded in Japanese workplaces—and knowing your legal rights—is essential for anyone planning to work in Japan.

This guide explains the cultural roots of Japan's overtime culture, the legal framework governing work hours, and practical strategies for navigating workplace expectations as a foreigner.

What Is Overtime Culture in Japan?

Overtime in Japan is not just a workplace policy—it's a deeply embedded cultural phenomenon. The concept of dedication through physical presence means many employees feel obligated to stay at their desks long after their scheduled hours end, even when their work is finished.

This practice is rooted in several cultural values:

• Ganbaru (perseverance): Demonstrating effort and persistence is highly valued. Leaving "on time" can be perceived as not working hard enough.
• Group harmony (wa): Leaving before your colleagues or boss can feel like breaking team unity.
• Seniority-based expectations: Junior employees often wait for senior staff to leave first, creating a cascading effect of late departures.

Japan's average monthly overtime was 22.2 hours in 2022, a figure that increased by 1.4 hours from the previous year. More alarmingly, approximately 1 in 10 Japanese workers logs 80 or more overtime hours per month—a threshold associated with serious health risks.

For foreigners, understanding that overtime expectations are often unspoken and cultural rather than explicitly stated in contracts is critical. You may not be formally required to stay late, but the social pressure can be intense.

For more on adapting to Japan's workplace dynamics, check out our Complete Guide to Working in Japan as a Foreigner.

The Legal Framework: What the Law Says

Japan has a clear legal framework for working hours, though the gap between law and practice can be wide. Here's what you need to know:

Standard Working Hours

Under Japan's Labour Standards Act, the legal limits are:

• 8 hours per day maximum
• 40 hours per week maximum

Any work beyond these limits is considered overtime and must be compensated accordingly.

The 36 Agreement (Sanroku Kyotei)

The 36 Agreement (三六協定, sanroku kyotei) is the legal mechanism that allows employers to require overtime. Named after Article 36 of the Labour Standards Act, this agreement must be formally filed with the Labour Standards Office before an employer can legally mandate overtime.

Under the 36 Agreement, standard caps are:

• 45 hours per month
• 360 hours per year

With special provisions for "exceptional circumstances," these caps can extend to:

• Up to 720 hours per year
• Maximum 100 hours in a single month
• No more than 80 hours averaged over multiple months

Overtime Pay Rates

Japanese law requires premium pay for overtime:

These rates apply equally to foreign workers. It is illegal to pay foreigners less than Japanese workers for equivalent work.

For a comprehensive overview of your legal protections at work, see the Complete Guide to Daily Life in Japan.

Service Zangyou: The Problem of Unpaid Overtime

One of the most concerning practices in Japanese workplaces is service zangyou (サービス残業), or unpaid overtime. Despite being illegal, this practice remains widespread—particularly in traditional companies and small businesses.

Service zangyou often happens because:

• Employees feel social pressure not to claim overtime
• Management informally discourages overtime submissions
• Time-tracking systems are loosely monitored

What you can do:

1. Keep your own records of hours worked (screenshots, emails with timestamps, calendar entries)
2. Know that your employment contract and time records are legal evidence
3. Contact the Labour Standards Inspection Office (労働基準監督署) if you believe your employer is violating overtime laws

As a foreigner, documenting everything is especially important. Language barriers can make disputes more complex, so having clear written evidence of your hours is essential.

For detailed guidance on labor rights and protections in Japan, the team at For Work in Japan has a comprehensive labor law guide specifically for foreign workers.

Karoshi: When Overwork Becomes Deadly

Karoshi (過労死) literally means "death from overwork." It refers to cardiovascular events (heart attacks, strokes) and work-related suicides caused by extreme overwork.

The statistics are sobering:

• In 2025, Japan officially recognized 1,304 cases of overwork-related deaths and health disorders—the highest number on record
• Of these, 1,055 involved mental health issues, including 88 suicides or attempts
• In 2023, nearly 2,900 people in Japan committed suicide due to work-related problems

The World Health Organization and International Labour Organization estimate that overwork causes approximately 750,000 deaths globally per year.

Signs You May Be Overworked

Watch for these warning signs:

• Consistently sleeping fewer than 6 hours per night due to work
• Difficulty concentrating or persistent fatigue
• Physical symptoms: headaches, chest tightness, elevated blood pressure
• Emotional detachment or loss of interest in daily activities
• Skipping meals or not having time to exercise

If you are experiencing these symptoms, speak with a doctor. Japan's Employee Assistance Programs (EAP) are available at many larger companies.

Work Style Reform: Is Japan Changing?

Japan has made genuine efforts to reform its overtime culture. The Work Style Reform Act (働き方改革), passed in 2018 and implemented in stages through 2024, represents the most significant labor reform in decades.

Key reforms include:

• Legally binding overtime caps (45 hrs/month, 360 hrs/year)
• Mandatory 5 days of paid annual leave that employees must actually take
• Equal pay for equal work provisions for non-regular workers
• Extended coverage to previously exempt industries (doctors, drivers, construction) starting April 2024

Research shows the reforms have had mixed but positive effects: studies indicate the overtime cap reduced average monthly overtime hours by approximately 5 hours (25%) in covered workplaces. However, nearly 30% of companies still exceed two hours of overtime daily.

In 2025, Tokyo's government began piloting a four-day workweek based on an 80% hours-for-100% pay model—a promising sign of cultural shift.

The IT sector remains a particular concern. According to data from Ittenshoku, IT workers log 36–42 hours of monthly overtime compared to the national average of just 10 hours, and 30% experience issues with unpaid overtime.

For more insight on Japanese workplace culture and expectations, Living in Nihon's work culture guide is an excellent resource for foreigners navigating the system.

How to Navigate Overtime Culture as a Foreigner

As a foreigner working in Japan, you have both the advantage and challenge of being an "outsider." Here's how to handle overtime expectations effectively:

Before Accepting a Job

• Research the company's actual overtime hours, not just what's listed on the job posting
• Check reviews on sites like Glassdoor or OpenWork (Vorkers) for real employee experiences
• Ask directly: "Zangyō wa tsuki nan-jikan gurai desu ka?" (How many overtime hours per month approximately?)
• Look for companies with White 500 certification (awarded to companies committed to employee health) or those with stated work-life balance policies

On the Job

• Understand your contract: Know whether you have a fixed overtime (みなし残業, minashi zangyou) clause—a flat monthly overtime payment regardless of actual hours
• Use your vacation days: You are legally entitled to at least 5 days of paid leave per year. Using them is your right, not a request
• Communicate clearly but diplomatically: In Japanese workplace culture, directness can be jarring. Frame discussions about work hours around health and productivity
• Find allies: Senior foreign colleagues or managers who understand both cultures can be invaluable navigators

Company Types to Prioritize

What to Say in Japanese

Overtime Culture by Industry

Overtime expectations vary significantly by sector in Japan:

Your Mental Health Matters

Japan has excellent mental health resources, though accessing them as a foreigner requires some navigation. If workplace stress is affecting your wellbeing:

• Company counselors: Many large companies are legally required to offer stress checks and counseling
• Occupational physician (産業医, sangyō-i): Ask HR if your company has one; they provide confidential advice
• Mental health hotlines: TELL Japan (03-5774-0992) offers English-language counseling
• Community resources: Foreign resident associations and expat networks can provide peer support

Remember that protecting your mental and physical health is not a sign of weakness—it is a legal and human right.

For more on maintaining wellbeing in Japan, see our guide on Japanese Culture and Etiquette.

Final Thoughts

Japan's overtime culture is changing, but slowly. The legal framework now provides stronger protections than ever, and a new generation of Japanese workers—along with the influence of international companies—is gradually shifting expectations. As a foreigner, understanding the cultural context behind overtime, knowing your rights, and choosing your employer carefully will make a significant difference in your quality of life.

You don't have to simply accept overwork as "part of working in Japan." The law is on your side, and speaking up—diplomatically but clearly—is both possible and increasingly accepted.

For a broader look at your rights and life in Japan, explore our Complete Guide to Working in Japan and Daily Life in Japan guide.

Additional resources:

• Japan Dev: Overtime in Japan Explained
• TokyoDev: Overtime Laws, Pay Rates, and Fixed Overtime