Japan's Annual Health Checkup: A Guide to Kenko Shindan and Ningen Dock

If you work as a salaried employee in Japan, one of the first cultural and administrative differences you will encounter is the mandatory annual health checkup (健康診断 — Kenko Shindan). Under Japanese labor law, employers are legally required to provide these checkups to their employees once a year, and employees are expected to take them. While it may seem intrusive to those from western countries, it is a highly normalized part of preventative healthcare in Japan.

Kenko Shindan vs. Ningen Dock: What is the Difference?

There are two main levels of preventative health checkups in Japan:

Kenko Shindan (健康診断): The standard annual checkup. It is legally mandated for all full-time employees. It covers basic screenings and is completely free of charge to the employee, as the company pays for it.
Ningen Dock (人間ドック): A comprehensive, voluntary medical screening. It includes advanced tests like ultrasounds, CT scans, MRIs, and gastrointestinal exams (endoscopy). It is highly detailed and can cost between ¥10,000 and ¥100,000 depending on the package, though many health insurance societies subsidize the cost.

What Tests Are Included in the Standard Checkup?

For employees under age 40, the basic health checkup (regulated by the Industrial Safety and Health Act) is relatively quick and includes:

Biometrics: Height, weight, body mass index (BMI), and waist circumference (a key metric in Japan to screen for metabolic syndrome).
Sensory: Vision test and hearing test (testing at 1,000 Hz and 4,000 Hz).
Cardiovascular: Blood pressure check and an electrocardiogram (ECG) if deemed necessary by the doctor.
Respiratory: Chest X-ray to screen for tuberculosis and lung conditions.
Urine Test: Checking for protein, sugar, and blood.
Blood Test: A complete blood panel evaluating liver function (AST, ALT, gamma-GTP), lipid levels (cholesterol, triglycerides), blood sugar (HbA1c), and anemia markers (red blood cell count, hemoglobin).

If you are 40 or older, you will also undergo a Specific Health Checkup (特定健康診査 — Tokutei Kenko Shinsa) which places additional focus on cardiovascular health, abdominal girth, and lifestyle-related diseases.

Gastrointestinal Exams: Barium vs. Endoscopy

For older employees or those undergoing a Ningen Dock, a stomach screening is often required. The two standard options are:

Barium Swallow (胃部X線検査): You drink a chalky barium mixture and are strapped to an X-ray table that tilts you upside down and sideways while taking images of your stomach. You must then take laxatives to pass the barium, which is notoriously uncomfortable.
Gastroscopy/Endoscopy (胃カメラ): A thin tube with a camera is inserted through your nose (transnasal) or mouth (transoral) to directly view the stomach lining. While uncomfortable during the procedure, it is highly accurate and does not require laxatives afterwards.

What if You Are Self-Employed or a Dependent?

If you are self-employed or a freelancer covered by National Health Insurance (国民健康保険 — Kokumin Kenko Hoken), you do not have an employer to organize your checkup. However, your municipal government (city or ward office) will send you a subsidized health checkup voucher in the mail every year. These municipal checkups are either free or cost a nominal fee (e.g., ¥500 to ¥2,000) and can be booked at designated local clinics.

For more information on how the health insurance system works and how your monthly premiums are calculated, read our comprehensive Japan Health Insurance Guide.

Japan health insurance card and annual health checkup system — Regular annual health checkups are an integral part of Japan's public health and prevention strategy.

For official health checkup guidelines, consult the Ministry of Health, Labour and Welfare (MHLW) and review preventative care resources issued by your local ward or municipal office.