Japan Employment Law for Foreign Companies: What HR Needs to Know Before Hiring Your First Employee
Introduction
Japan's employment law environment is one of the most employee-protective in the world. For foreign companies entering the Japan market — whether through a wholly-owned subsidiary, a joint venture, or an acquisition — the compliance landscape is significantly more demanding than in the US, UK, Singapore, or most other major markets.
This isn't bureaucratic complexity for its own sake. Japan's labor law reflects decades of policy choices that prioritize employment stability, employer-funded health management, and long-term worker protection. Understanding the framework is not optional — it's foundational to operating a Japan entity.
This guide covers the obligations that apply from your first hire, with special attention to areas that frequently surprise international HR professionals.
1. The Core Legal Framework
1.1 The Labor Standards Act (労働基準法)
The Labor Standards Act (LSA) is the foundational statute. It establishes minimum standards for: - Working hours (maximum 8 hours/day, 40 hours/week before overtime) - Rest periods and days off - Annual paid leave entitlements - Wages and payment rules - Contract and dismissal rules
The LSA applies to all workers in Japan regardless of their nationality or the nationality of their employer. A foreign subsidiary is fully subject to the LSA from its first hire.
1.2 The Labor Contract Act (労働契約法)
The Labor Contract Act governs the formation, content, and termination of employment contracts. Key provisions include: - The doctrine of abusive dismissal (解雇権濫用法理): termination must be objectively reasonable and socially acceptable — a much higher bar than at-will employment - Fixed-term contract rules including conversion-to-permanent rights after 5 years of renewal (mukiroka rule, 無期転換ルール) - Rules on changes to employment terms
1.3 The Industrial Safety and Health Act (労働安全衛生法)
The Industrial Safety and Health Act (ISHA) is where most foreign companies face unexpected compliance obligations. It covers: - Mandatory annual health checkups for all employees - Industrial physician obligations (at 50+ employees) - Annual stress check (at 50+ employees) - Occupational Health Committee requirements - Work environment measurement and hazard management
International HR guides that focus on "labor law" often emphasize the LSA and Labor Contract Act, but miss the ISHA entirely. This is where Japan's occupational health obligations live — and they're significant.
2. Employment Contracts: What Must Be in Writing
2.1 Mandatory Written Disclosure
Under the LSA, certain employment terms must be disclosed to employees in writing at the time of hiring (労働条件明示義務). This applies to every employee regardless of type.
Mandatory disclosure items include:
| Item | Notes |
|---|---|
| Contract duration (or indication of indefinite term) | Fixed-term contracts must state the period |
| Workplace location and duties | Required in writing |
| Start and end of work hours, rest periods, days off, leave | Including any overtime arrangements |
| Wages: calculation method, payment method, closing date, payment date | Salary details |
| Rules for dismissal, resignation | Including notice periods |
From April 2024, additional items became mandatory for certain contract types: - For fixed-term contracts: renewal possibility and criteria - For converted-to-indefinite-term employees: terms of conversion - For transfer-eligible employees: mention of potential workplace changes
Practice note: Many foreign companies use global employment contract templates that do not include all Japanese mandatory disclosure items. These need to be localized or supplemented with a Japanese statutory disclosure addendum.
2.2 Indefinite vs Fixed-Term Contracts
Foreign companies sometimes default to fixed-term contracts for flexibility reasons. Be aware: - Fixed-term contracts are permitted but renewal patterns are regulated - If an employee has been on fixed-term contracts for 5 years and applies for conversion to an indefinite-term contract, the employer must convert (mukiroka rule) - A contract that has been renewed multiple times will, if challenged, be treated by courts as having reasonable expectation of continued employment — making non-renewal legally equivalent to dismissal
2.3 Dismissal: A High Bar
Japanese courts apply a strict standard to employment termination. Four conditions (seirisa kaiko 4 yoken, 整理解雇の4要件 for redundancy dismissals) include: - Business necessity for workforce reduction - Efforts to avoid dismissal through other means - Reasonable, non-discriminatory selection of those dismissed - Good-faith consultation with employees or their representatives
Performance dismissals are also heavily scrutinized. Courts routinely reinstate dismissed employees and award back pay when the employer cannot demonstrate progressive performance management and clear communication of performance expectations.
Key implication for foreign companies: Do not import at-will employment practices into your Japan operations. The legal, financial, and reputational cost of a wrongful dismissal case in Japan is substantial.
3. Work Rules (就業規則): Required at 10+ Employees
When you reach 10 regularly employed employees, you must create and file Work Rules (就業規則, shūgyō kisoku) with the Labor Standards Inspection Office (労働基準監督署).
Work Rules are a comprehensive document covering: - Working hours, breaks, holidays, leave - Wage calculation and payment - Promotion, demotion, disciplinary procedures - Dismissal and resignation procedures - Health and safety obligations - Any other rules governing the employment relationship
Why Work Rules Matter
Work Rules function as the employment contract's legal backdrop in Japan. Individual contracts can specify better terms than the Work Rules but cannot specify worse terms. Courts treat Work Rules as binding on both the employer and employees.
Foreign company mistake: Operating without Work Rules past 10 employees, or using Work Rules that were drafted without local legal counsel and contain provisions inconsistent with Japanese law. Both create liability exposure.
4. Social Insurance: Full Coverage Obligations
Japan requires employers to enroll eligible employees in four social insurance systems:
| System | Employee contribution | Employer contribution | Notes |
|---|---|---|---|
| Health Insurance (健康保険) | ~5% of standard monthly wage | ~5% | Managed by Japan Health Insurance Association or health insurance association |
| Employees' Pension Insurance (厚生年金保険) | ~9.15% of standard monthly wage | ~9.15% | JapanPension Service |
| Employment Insurance (雇用保険) | ~0.6% of wages | ~0.95% | Unemployment benefits, parental leave |
| Workers' Compensation Insurance (労働者災害補償保険) | None | Varies by industry risk | Covers work-related injury/illness |
Enrollment is mandatory from the first day for full-time employees and for part-time employees meeting threshold hours/wages. There is no grace period — failure to enroll retroactively from the start date creates significant penalty exposure.
Social insurance contributions are substantial — employer contributions alone typically add 15–18% to base payroll cost. This needs to be modeled accurately in Japan market entry financial projections.
5. Working Hours: The 36 Agreement (三六協定)
5.1 Statutory Maximum and Overtime
The LSA sets a statutory maximum of 40 hours per week, 8 hours per day. Any work beyond this requires: 1. A 36 Agreement (三六協定, san-roku kyōtei) — a written agreement between the employer and employees (or their representatives) 2. Payment of overtime premiums
The 36 Agreement must be filed with the Labor Standards Inspection Office. It specifies the maximum overtime hours the employer may require.
5.2 Overtime Pay Rates
| Type of overtime | Premium rate |
|---|---|
| Daily overtime (beyond 8 hours) | +25% |
| Weekly overtime (beyond 40 hours) | +25% |
| Late-night work (10pm–5am) | +25% (additional, cumulative with overtime) |
| Holiday work (statutory days off) | +35% |
| Overtime exceeding 60 hours/month | +50% (for all companies since April 2023) |
5.3 The "Managerial Exemption" Trap
Japanese law has a narrow managerial exemption from overtime rules (管理監督者). Courts and the Ministry have consistently ruled that this exemption applies only to workers with genuine management authority over the entire operation — not simply anyone with "manager" in their title.
Foreign companies frequently misclassify employees as exempt managers to avoid overtime liability. This is one of the most common labor law violations by foreign-affiliated companies in Japan and generates significant back-pay liability when challenged.
6. Annual Paid Leave (年次有給休暇)
The LSA requires employers to grant paid annual leave based on length of service:
| Years of service | Days of paid leave |
|---|---|
| 6 months | 10 days |
| 1.5 years | 11 days |
| 2.5 years | 12 days |
| 3.5 years | 14 days |
| 4.5 years | 16 days |
| 5.5 years | 18 days |
| 6.5+ years | 20 days |
Since 2019, employers must ensure employees take at least 5 days of paid leave per year (年5日取得義務). Failure to ensure this is a violation subject to fine.
7. Mandatory Health Checkups (定期健康診断)
This is where the Industrial Safety and Health Act enters the picture. Regardless of headcount, every employer in Japan must arrange an annual health checkup for all employees.
The standard checkup (一般定期健診) covers: - Medical history and current complaints - Height, weight, BMI, visual acuity, hearing - Blood pressure - Chest X-ray - Blood tests (CBC, lipids, liver enzymes, blood sugar, HbA1c for those over 40) - Urinalysis - ECG (for employees over 35 and 40+)
Key obligations: - The employer bears the cost of the checkup - Employees cannot be required to use paid leave for health checkups - Results are delivered to the employee and the employer (unlike stress check results — see below) - The employer must take follow-up action based on results, including referring to the industrial physician for employees with abnormal findings
Health checkup records must be retained for 5 years.
Practical note for foreign companies: Annual health checkups are a significant operational commitment. Companies with dispersed workforces need to establish relationships with clinic networks or mobile health checkup vendors who can serve multiple locations.
8. The Stress Check (ストレスチェック): The Obligation Most Foreign Companies Discover Late
At 50 regularly employed employees, the ISHA Article 66-10 mandates an annual stress check for all workers.
Unlike health checkups: - Individual results are owned by the employee, not the employer - The employer does not receive individual data unless the employee consents - The employer receives only group/team-level aggregate data for workplace improvement analysis - High-stress employees who want to consult the industrial physician must initiate this themselves - The employer's obligation is to encourage consultation — not to compel it
The stress check obligation catches many foreign companies by surprise for two reasons:
-
The concept doesn't exist in most other markets. There is no equivalent mandatory annual psychological wellbeing survey in US, UK, or most European systems. HR professionals from these markets simply don't have it on their compliance radar.
-
The data ownership structure is unusual. Foreign companies accustomed to comprehensive employee wellness dashboards may expect to see individual data. The privacy-protective design means this isn't how Japanese law works.
Non-implementation is a compliance violation. From 2028, the obligation extends to all companies regardless of size.
Learn more about the stress check obligation →
9. Occupational Health Obligations at 50+ Employees
At 50 employees, three additional obligations activate:
- Industrial physician (産業医): appointment of a licensed occupational medicine physician
- Occupational Health Committee (衛生委員会): monthly committee meetings with documented minutes
- Health management officer (衛生管理者): designated internal officer with required qualification
Full details on the 50-employee threshold obligations →
10. What Foreign Companies Typically Miss
Based on patterns with Japan market entrants, the following are consistently overlooked:
| Obligation | Why it's missed |
|---|---|
| Stress check | No equivalent in most home markets; missed in standard labor law overviews |
| Industrial physician | Unfamiliar concept; not in most "Japan HR guide" content |
| 36 Agreement filing | Overtime payment understood; the required written agreement with employees often isn't |
| Work rules at 10 employees | Triggered earlier than expected; often not flagged until it's already overdue |
| Paid leave 5-day mandate | Known, but not tracked systematically; creates retroactive liability |
| Fixed-term contract mukiroka | Long-term contractors and fixed-term employees converted to permanent obligations |
| Social insurance retroactive enrollment | Starting enrollment too late; back-contribution liability |
Getting Started: A Phased Approach
Before you hire: - Engage Japanese employment law counsel to review or draft employment contract template and Work Rules (if approaching 10 employees) - Set up social insurance registration processes
At first hire: - Enroll in health insurance, pension, employment insurance, and workers' comp - Begin tracking annual leave accrual - Plan annual health checkup vendor relationship
Approaching 10 employees: - Complete and file Work Rules
Approaching 50 employees: - Begin planning industrial physician appointment (can take time to identify and contract) - Select stress check vendor or implementation plan - Prepare Occupational Health Committee formation
How COCKPITOS Supports Foreign Companies Entering Japan
COCKPITOS is built for the Japan occupational health compliance environment — and specifically designed with multinational workforces in mind:
- Stress check in 10 languages: Japanese, English, Vietnamese, Chinese (Simplified/Traditional), Korean, Filipino, Indonesian, Thai, Portuguese
- Compliance documentation: audit-ready implementation records
- Group analysis: department-level data for Occupational Health Committee reporting
- Industrial physician coordination: workflow support for follow-up interview management
- 1on1, pulse survey, and skill map modules: integrated employee health and engagement management
Contact us for a free consultation on setting up your Japan occupational health compliance.
Related Articles
- The 50-Employee Milestone in Japan: New HR Compliance Obligations You Must Meet
- Setting Up a Company in Japan: HR and Employment Compliance Checklist
- Japan Stress Check Law — A Complete Guide for Foreign Companies
- Occupational Health in Japan: Mandatory Health Checkups, Stress Checks, and Industrial Physician Requirements