The Emperor and the Constitution of Japan
Introduction
The constitutional status of the Emperor (Tennō) is one of the most carefully calibrated features of the Japanese constitutional order. The Constitution transformed the Emperor from a sovereign ruler into a symbol of the State and of the unity of the people, stripped of all political authority — a fundamental break with Japan’s constitutional tradition and a resolution of contested questions about the monarchy, sovereignty, and the imperial institution’s continuity.
The Emperor Under the Meiji Constitution
The Meiji Constitution (Article 4) declared the Emperor “the head of the Empire, combining in himself the rights of sovereignty.” He was “sacred and inviolable” (Article 3), with powers including supreme command of the military, treaty-making, convocation and dissolution of the Diet, and appointment of ministers. The Meiji Emperor was an active center of constitutional authority, not a mere figurehead.
The Symbol Emperor: Article 1
Article 1 provides: “The Emperor shall be the symbol of the State and of the unity of the people, deriving his position from the will of the people with whom sovereign power resides.” This accomplishes three objectives: it locates sovereignty in the people, defines the Emperor as a “symbol” (shōchō) deliberately chosen over “monarch” or “head of state” to emphasize his non-political character, and preserves the dynasty while redefining its function.
The Emperor’s Powers
Article 3 establishes: “The advice and approval of the Cabinet shall be required for all acts of the Emperor in matters of state, and the Cabinet shall be responsible therefor.” The Emperor’s acts of state (Article 7) include promulgation of laws and treaties, convocation and dissolution of the Diet, attestation of appointments, award of honors, and reception of foreign ambassadors. Article 6 provides for the Emperor’s appointment of the Prime Minister as designated by the Diet and the Chief Justice as designated by the Cabinet — purely formal acts with no discretion. Article 4(1) provides: “The Emperor shall perform only such acts in matters of state as are provided for in this Constitution and he shall not have powers related to government.”
Succession and the Male-Only Rule
Article 2 provides that the Throne shall be “dynastic and succeeded to in accordance with the Imperial Household Law.” The Imperial Household Law (Article 1) limits succession to male descendants in the male line belonging to the legitimate imperial lineage. The birth of Princess Aiko in 2001 prompted a 2005 government commission to recommend permitting female succession and firstborn succession regardless of gender, but the birth of Prince Hisahito in 2006 halted legislative action. In 2021, a new expert panel was established to study the question, but no legislative action has been taken to date.
The Abdication of Emperor Akihito
Emperor Akihito’s abdication in 2019 — the first in approximately 200 years — required special legislation. The Act on the Abdication of the Emperor (2017) provided a one-time exception to the Imperial Household Law, which contained no abdication procedure. The accession of Emperor Naruhito followed on May 1, 2019.
The Symbolic Role and Constitutional Significance
The Emperor performs numerous non-political functions — visiting disaster areas, attending cultural events — contributing to national unity. The constitutional significance of the symbol emperor system lies in its resolution of a fundamental dilemma: preserving the imperial institution while repudiating the militarist ideology associated with it. The symbol emperor represents a compromise ensuring the dynasty can never again serve as a rallying point for authoritarian politics.
Conclusion
The symbol emperor system has proven stable, adapting to constitutional democracy without the crises affecting other monarchies. The ongoing debates over succession and abdication demonstrate that the constitutional role of the Emperor remains a living question requiring continued attention.