YAML

Japanese Law Numbers - YAML

Japanese law numbers are a numbering system assigned at the time of promulgation to identify laws, cabinet orders, imperial orders, ministerial ordinances, and rules. Numbers are assigned sequentially from No. 1 for each calendar year according to the type of law and year of enactment, and when the era name changes, numbering starts anew from No. 1 at that point. Assigned based on the promulgation date, they play an important role in uniquely identifying laws, especially when multiple laws share the same title. In the e-Gov law search system, a 15-digit law ID is used to identify laws in a machine-readable format.

law act cabinet order ministerial ordinance e-Gov law number legal system official gazette

- code: "1"
  slug: "constitution"
  name: "Constitution"
  description: "The supreme law of Japan."
  format: "Constitution of Japan (no law number)"
  lawType: "Constitution"
- code: "2"
  slug: "act"
  name: "Act"
  description: "Laws established through approval by the National Diet based on constitutional provisions."
  format: "Era Name Year Act No. X (e.g., Heisei 5 Act No. 88)"
  lawType: "Act"
  lawIdPrefix: "AC"
- code: "3"
  slug: "cabinet-order"
  name: "Cabinet Order"
  description: "Orders issued by the Cabinet to implement constitutional and legal provisions."
  format: "Era Name Year Cabinet Order No. X (e.g., Showa 60 Cabinet Order No. 75)"
  lawType: "CabinetOrder"
  lawIdPrefix: "CO"
- code: "4"
  slug: "imperial-order"
  name: "Imperial Order"
  description: "An old form of law, but includes those still valid at the time data compilation began."
  format: "Era Name Year Imperial Order No. X (e.g., Showa 18 Imperial Order No. 618)"
  lawType: "ImperialOrder"
  lawIdPrefix: "IO"
- code: "5"
  slug: "ministerial-ordinance"
  name: "Ministerial Ordinance"
  description: "Orders established by heads of organizations based on laws and cabinet orders."
  format: "Era Name Year Ministry Ordinance No. X (e.g., Heisei 17 Ministry of Justice Ordinance No. 27)"
  lawType: "MinisterialOrdinance"
  lawIdPrefix: "M1-M6"
- code: "6"
  slug: "rule"
  name: "Rule"
  description: "Rules such as National Personnel Authority rules, Board of Audit rules, and Supreme Court rules."
  format: "Era Name Year Rule No. X (e.g., Showa 22 Board of Audit Rule No. 1)"
  lawType: "Rule"
  lawIdPrefix: "R"