Occupational Health in Japan: Mandatory Health Checkups, Stress Checks, and Industrial Physician Requirements Explained
Introduction
Most foreign HR professionals who enter the Japan market know that Japan has employee health checkup requirements. Fewer know about the stress check mandate — a separate annual psychological wellbeing survey that applies to all companies with 50 or more employees. And fewer still are prepared for the industrial physician system, which requires companies above that threshold to appoint a licensed occupational medicine doctor as an ongoing compliance partner.
Together, these three pillars form Japan's mandatory occupational health infrastructure — a system significantly more structured than in most other major markets.
This guide explains all three, how they interrelate, and what employers need to do to stay compliant.
1. The Legal Foundation
Japan's occupational health obligations are primarily governed by the Industrial Safety and Health Act (労働安全衛生法, Rōdō Anzen Eisei-hō, abbreviated ISHA), first enacted in 1972 and amended multiple times since. The 2015 amendment added the stress check mandate — the most significant occupational health compliance change in decades.
The Act operates on a headcount-tiered system. Some obligations apply from employee 1; others activate at 10, 50, or higher thresholds.
2. Annual Health Checkups (定期健康診断): Applies to All Employers
2.1 The Baseline Obligation
Under Article 66 of the ISHA, every employer must arrange an annual health checkup for all regularly employed workers — regardless of company size, industry, or employee nationality. This applies from your first hire.
The standard checkup (一般定期健康診断) must include, at minimum:
| Item | Notes |
|---|---|
| Medical history and current complaints | Physician interview |
| Height, weight, body mass index | Physical measurements |
| Visual acuity | Both corrected and uncorrected |
| Hearing | Pure-tone audiometry at 1,000Hz and 4,000Hz |
| Blood pressure | |
| Chest X-ray | |
| Complete blood count | Red/white blood cells, hemoglobin |
| Lipid panel | Triglycerides, LDL, HDL |
| Liver enzymes | AST, ALT, γ-GTP |
| Blood glucose | HbA1c for employees over 40 |
| Urinalysis | Protein, glucose |
| ECG | For employees 35 and 40+; others at employer discretion |
The employer is responsible for the cost of the checkup — this cannot be passed to employees.
2.2 Frequency and Timing
- Annual for most employees
- Semi-annual for employees working specific shift patterns (certain night-shift arrangements)
- Within 3 months of hiring for new employees who haven't had a checkup in the past 6 months
2.3 Follow-Up Obligations
The employer's obligations don't end when the checkup is complete. Under ISHA:
- Results must be provided to the employee
- Results must be reviewed by the industrial physician (or, for companies below 50, by a physician the employer consults)
- For employees with abnormal findings, the employer must take follow-up measures — typically including physician-recommended work accommodations (shortened hours, duty modifications, medical treatment referral)
- Aggregate results must be reviewed by the Occupational Health Committee (for 50+ employee companies)
2.4 Record Retention
Health checkup records must be retained for 5 years from the date of checkup.
2.5 What About Employees Who Refuse?
Employers are required to offer the health checkup. Employees who refuse are, under law, subject to the employer's duty to offer — but cannot be compelled. In practice, participation rates above 95% are achievable with clear communication. The employer's obligation is to document that the offer was made.
3. Special Health Checkups (特殊健康診断)
In addition to the standard annual checkup, the ISHA mandates special health checkups for employees exposed to specific occupational hazards. These include:
- High-noise environments
- Organic solvent exposure
- Lead exposure
- Ionizing radiation
- Asbestos exposure
- Certain heavy metals
Special checkups are more frequent (some semi-annual) and are tailored to the specific hazard profile. Most office-based companies at Japan subsidiaries of foreign firms will not have significant special checkup obligations, but manufacturing, construction, research, and laboratory environments require careful assessment.
4. Annual Stress Check (ストレスチェック): Mandatory at 50+ Employees
4.1 What the Stress Check Is
The stress check (ストレスチェック制度) is a mandatory annual psychological wellbeing survey under Article 66-10 of the ISHA. It was introduced in 2015 and is one of the most distinctive features of Japan's occupational health system.
Every employee must be offered the survey once per year. The standard instrument is the 57-item Job Stress Questionnaire (職業性ストレス簡易調査票), which measures:
- Job stressors: workload, work pace, control over work, interpersonal relationships, physical environment
- Stress reactions: psychological symptoms (anxiety, depression, irritability), physical symptoms (fatigue, sleep issues), behavioral symptoms
- Support resources: support from managers, support from colleagues, organizational fairness
An 80-item version is also available, providing more granular data on dimensions including career development, role clarity, and work engagement.
4.2 The Privacy-Protective Structure: Individual Results Stay with the Employee
This is the aspect that most surprises foreign HR professionals.
Individual stress check results belong to the employee, not the employer.
Under ISHA Article 66-10 and related ministerial ordinances: - Results are transmitted to the employee directly (or via the implementing physician) - The employer does not receive individual results without the employee's explicit written consent - It is prohibited to use stress check results in employment decisions (promotion, demotion, assignment, dismissal)
This structure is fundamentally different from employee wellness surveys in the US, UK, and most European countries, where employers typically have access to all data.
4.3 What Employers Do Receive: Group Analysis
While individual results are protected, employers receive group analysis data (集団分析, shūdan bunseki):
- Aggregate stress level by department, job type, or organizational unit
- High-stress percentage by team
- Profile of workplace stressors: which teams are showing elevated workload, low support, high interpersonal stress
- Year-over-year comparison
This group-level data is the basis for workplace improvement — and under the ISHA, the Occupational Health Committee is required to deliberate on it and document improvement actions.
4.4 High-Stress Employees: The Follow-Up Process
When an employee's individual results indicate high stress:
- The employee is notified by the implementing physician
- The employee may — entirely voluntarily — request a follow-up consultation with the industrial physician
- If the employee requests a consultation, the industrial physician provides a written opinion on recommended work accommodations
- The employer must then implement these accommodations or document reasons for not doing so
- The employer cannot compel the employee to consult the physician or penalize them for not doing so
The voluntary nature of the follow-up is a recurring compliance challenge: 70–80% of high-stress employees do not request physician consultations. Managing this gap — through confidentiality assurances, flexible scheduling, and normalized occupational health communication — is the operational heart of a functioning stress check program.
4.5 Implementation: Internal vs External Providers
Companies have two options for implementing the stress check:
Option A: Industrial physician as implementer If your industrial physician is qualified and willing, they can conduct the stress check internally. This is lower cost but requires physician bandwidth and administrative support.
Option B: Certified external service provider Companies can contract with an external stress check platform (like COCKPITOS) to handle the entire implementation: questionnaire delivery, individual result reporting, group analysis generation, and physician coordination.
For multinational companies or those with dispersed workforces, external providers are typically more practical. Key considerations: - Language support: Does the provider offer multilingual questionnaires? - Employee portal: Can employees access results conveniently? - Integration: Does the system integrate with your industrial physician's workflow?
4.6 The 2028 Extension
As of 2025 legislation, the stress check obligation will extend to all companies regardless of headcount by 2028. Companies building Japan operations now should design their occupational health infrastructure to accommodate the stress check from the start.
5. Industrial Physician (産業医): Required at 50+ Employees
5.1 Who Is an Industrial Physician?
An industrial physician (産業医) is a licensed medical doctor who has completed additional training in occupational medicine — either a formal postgraduate program or a certified occupational medicine course. They hold a recognized qualification specifically for industrial physician practice.
This is not a role that can be filled by a general practitioner without occupational medicine qualification, nor by an HR professional or nurse. It's a medical and legal role with specific qualification requirements.
5.2 Appointment Requirements
| Headcount | Requirement |
|---|---|
| Fewer than 50 employees | Not legally required, but recommended |
| 50–999 employees | At least 1 industrial physician (part-time contracted permitted) |
| 1,000–3,000 employees | 1 full-time industrial physician required |
| 3,001+ employees | 2 full-time industrial physicians required |
Most Japan subsidiaries of foreign companies (50–999 employees) will use a contracted part-time industrial physician — a physician in private practice or affiliated with an occupational health clinic who serves multiple client companies on a monthly visit basis.
The appointment must be filed with the Labor Standards Inspection Office (労働基準監督署). Failure to file within the required timeframe is a violation.
5.3 What the Industrial Physician Must Do
The ISHA specifies minimum activities for contracted industrial physicians:
| Activity | Frequency |
|---|---|
| Workplace inspection | At least monthly (or quarterly at some thresholds) |
| Occupational Health Committee attendance | Monthly |
| Review of health checkup results | Annual (with follow-up opinions for employees with findings) |
| Stress check oversight | Annual |
| High-stress employee consultations | As requested by employees |
| Work accommodation opinions | As needed |
For companies with fewer than 1,000 employees, these activities are typically compressed into the contracted monthly visit plus asynchronous review.
5.4 Finding an Industrial Physician
The Japan Society for Occupational Health (日本産業衛生学会) and regional occupational health promotion centers can provide referrals. Occupational health service companies and stress check vendors often have industrial physician networks as part of their service offerings.
Contracts typically run on a monthly fee basis. Fees vary significantly by physician availability, location, and scope of services, but a contracted part-time industrial physician for a 50–200 employee company in a major urban area typically ranges from ¥50,000–¥200,000 per month.
6. Occupational Health Committee (衛生委員会)
At 50+ employees, the ISHA requires formation of an Occupational Health Committee — a standing deliberative body that meets monthly.
6.1 Composition
- Industrial physician (required member)
- Health management officer (required member)
- At least one employee-nominated representative
- Management representative (typically HR director)
6.2 Required Agenda Items
The committee must deliberate on (at minimum): - Workplace health survey results - Annual health checkup aggregate results and follow-up actions - Stress check group analysis results and improvement actions - Mental health promotion measures - Work environment improvements
6.3 Minutes and Records
Meeting minutes must be: - Prepared for every meeting - Retained for 3 years - Made available to employees on request (common practice: posted on intranet)
7. How the Three Systems Work Together
The annual health checkup, stress check, and industrial physician are not independent compliance items — they form an integrated system:
Annual health checkup
→ Results reviewed by industrial physician
→ Physician opinion on work accommodations for employees with findings
→ Aggregate results reviewed by Occupational Health Committee
→ Committee documents improvement actions
Annual stress check
→ Individual results to employees (private)
→ High-stress employees may request industrial physician consultation
→ Group analysis to employer
→ Group analysis reviewed by Occupational Health Committee
→ Committee documents workplace improvement actions based on analysis
Industrial physician
→ Monthly workplace inspections inform health risk assessment
→ Reviews both health checkup and stress check data
→ Advises on work accommodations
→ Participates in Occupational Health Committee
→ Conducts high-stress follow-up consultations
The industrial physician is the connective tissue — the clinical professional who gives the data from both annual systems a qualified medical interpretation.
8. Record Retention Summary
| Record | Retention |
|---|---|
| Health checkup results (individual) | 5 years |
| Health checkup results (aggregates) | 5 years |
| Stress check results (individual, if consented) | 5 years |
| Stress check results (group analysis) | 5 years |
| Industrial physician appointment records | Duration of appointment |
| Occupational Health Committee minutes | 3 years |
| Work accommodation opinions | 5 years |
Records are subject to inspection by labor authorities. Digital recordkeeping is permitted; physical destruction before retention periods expire is a violation.
9. Cost Planning
Foreign companies building Japan market entry financial models often underestimate occupational health compliance costs. A rough planning framework for a 50–200 employee company in Japan:
| Item | Annual cost estimate |
|---|---|
| Annual health checkups (per employee) | ¥8,000–¥15,000/person (¥400,000–¥3,000,000 total) |
| Stress check implementation | ¥500–¥3,000/person depending on provider |
| Industrial physician (contracted, monthly) | ¥600,000–¥2,400,000/year |
| Health management officer training/qualification | One-time ¥50,000–¥100,000 per person |
Total annual occupational health compliance budget for a 100-person Japan entity: approximately ¥3–6 million/year, depending on checkup vendor, physician fees, and whether stress check is managed internally or externally.
10. How COCKPITOS Supports Mandatory Occupational Health Compliance
COCKPITOS is designed to handle the stress check component of Japan's occupational health system, with particular strength in multinational environments:
- 10-language stress check questionnaire: Japanese, English, Vietnamese, Chinese (Simplified/Traditional), Korean, Filipino, Indonesian, Thai, Portuguese
- Employee result portal: secure individual access without employer visibility
- Group analysis dashboard: department-level analytics for Occupational Health Committee review and workplace improvement planning
- Industrial physician workflow coordination: high-stress follow-up consultation scheduling and accommodation tracking
- Implementation documentation: audit-ready records of stress check cycle, participation rates, and committee review
Request a demo or free consultation →
Summary
| Obligation | Applies to | Frequency |
|---|---|---|
| Annual health checkup | All employers, all employees | Annual (some semi-annual) |
| Stress check | 50+ employee companies | Annual (extending to all companies 2028) |
| Industrial physician | 50+ employee companies | Ongoing (monthly visits for most) |
| Occupational Health Committee | 50+ employee companies | Monthly meetings |
Japan's occupational health system is designed as a permanent infrastructure — not a one-time compliance filing. The investment in setting it up correctly pays dividends in employee retention, legal protection, and genuine workplace health outcomes.
Related Articles
- The 50-Employee Milestone in Japan: New HR Compliance Obligations You Must Meet
- Japan Employment Law for Foreign Companies: What HR Needs to Know Before Hiring Your First Employee
- Japan Stress Check Law — A Complete Guide for Foreign Companies
- When Employees Refuse Stress Check Interviews in Japan
- Stress Check Group Analysis — How to Read Results and Drive Workplace Improvement