Value Village / Health

What are the common misunderstandings about Japan's annual health check?

This answer is a draft. It stays unpublished until legal review and source verification are complete.

The answerThe biggest misunderstanding is that the health check is the company's obligation and nothing to do with you. Under Japan's Industrial Safety and Health Act, the employer has a duty to provide it, and the employee has a duty to attend. For ages 40–74 there is also the Specific Health Check (the so-called "metabolic check"), with an uptake rate of about 60%.

In Japan an annual health check (健康診断, kenkō shindan, often shortened to kenshin) is a normal part of life for company employees. Many countries have no culture of yearly check-ups, so visitors and foreign residents are often surprised when their employer books one for them. Here is how the system works and what your part in it is.

How the system works

SchemeWhoLegal basisCost
General health check (regular check)Regularly employed workers. Once a yearIndustrial Safety and Health Act, Article 66Paid by the employer
Specific Health Check (特定健診, tokutei kenshin)Health-insurance members aged 40–74Act on Assurance of Medical Care for Elderly PeoplePaid by the insurer (free to a small co-payment)
Cancer screeningRun by municipalities (stomach, lung, colorectal, breast, cervical)Health Promotion ActFree to a few thousand yen, depending on the municipality
Ningen dock (comprehensive private check-up)Voluntary—Self-paid (subsidy schemes exist)
[Verify] Check the uptake rate and the target against the latest fiscal year of the MHLW "Implementation Status of Specific Health Checks and Specific Health Guidance".

Misunderstanding 1|No symptoms, no need to go

The purpose of the check is to spot changes before symptoms appear. Most lifestyle-related diseases have no noticeable symptoms in their early stages.

Misunderstanding 2|A result marked "re-examination needed" can wait and see

"Re-examination needed" (要再検査) and "detailed examination needed" (要精密検査) are instructions to go back and be examined again. Ignore them and the check was pointless. If you do not know where to go, ask the organisation that ran the check — that is the quickest route.

Misunderstanding 3|You can eat and drink normally the day before

Many items (blood sugar, triglycerides) assume 10 hours or more of fasting. Drinking or overeating the night before distorts the results and is a common cause of re-examination.

Misunderstanding 4|A figure "within the reference range" means no problem at all

The reference range is a statistical range derived from the distribution across many people. It is not an assurance of "no abnormality". The value of the check lies in watching the trend year by year.

Misunderstanding 5|Self-employed and freelance people cannot get a health check

Members of National Health Insurance (国民健康保険, kokumin kenkō hoken) are also eligible for the Specific Health Check from age 40. Your municipality posts you a voucher (受診券). Under 40, some municipalities and insurers run their own checks.

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Sources

https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/koyou_roudou/roudoukijun/anzen/anzeneisei03.html

https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000173202_00013.html

https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000059490.html

⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.

About this article

What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.

This is general information. Results vary from person to person and depend on your own conditions and surroundings.

Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.

This article is not meant to diagnose or manage any specific medical condition. If you are worried about your health, see a doctor rather than relying on your own judgement.

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