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Japan

Civil law with common-law influenceUnitary parliamentary constitutional monarchyReviewed· 2026-05-15
Capital
Tokyo
Population
123,500,000
Languages
Japanese
Currency
JPY

Japan · Legislation

Legislation and primary sources

Where to find the authoritative text of the law in Japan, and how to confirm it is still in force.

Sources of law, ranked

Constitution
Supreme law; Article 98 voids conflicting acts.
Six Codes (Roppō)
Constitution, Civil, Commercial, Criminal, Civil Procedure, Criminal Procedure.
Statutes of the Diet
Hōritsu enacted by the National Diet.
Cabinet and ministerial orders
Seirei and shōrei implementing statute.
Local ordinances
Jōrei of prefectures and municipalities.

The legislative process

Most bills are Cabinet-sponsored, drafted by ministries and reviewed by the Cabinet Legislation Bureau, then passed by both houses; the lower house can override the upper by a two-thirds majority.

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