I. Introduction
The Doctrine of Separation of Powers is a political-constitutional principle under which the three organs of the State — the Legislature, the Executive and the Judiciary — are kept functionally and personally distinct so that each may act as a check on the other and liberty may be preserved. Its classical exposition is by Montesquieu in De L’Esprit des Lois (1748).
II. Three Facets of the Doctrine
- The same person should not form part of more than one organ.
- One organ should not interfere with or control another.
- One organ should not exercise the functions of another.
III. The Doctrine in the United States
The U.S. Constitution (1787) adopts a rigid separation reinforced by the system of “checks and balances”. Each organ is independently elected / constituted and functionally distinct.
IV. The Doctrine in the United Kingdom
The U.K. follows parliamentary sovereignty and fusion of Legislature and Executive; separation is functional only, reinforced by convention and the Constitutional Reform Act, 2005 (independent Supreme Court).
V. The Indian Position
India adopts a functional but not a rigid separation. The following constitutional provisions evidence this:
- Article 50 — State shall take steps to separate the judiciary from the executive.
- Articles 53 & 154 — executive power vested in the President / Governor.
- Articles 121 & 211 — no discussion on judges’ conduct in Parliament / Legislature.
- Articles 122 & 212 — courts not to inquire into parliamentary proceedings.
- Article 361 — immunity of President / Governor.
Overlaps include: delegated legislation by executive; President’s ordinance power (Articles 123, 213); judicial review by courts; adjudication by tribunals.
VI. Landmark Supreme Court Pronouncements
VII. Modern Developments
The rise of the administrative state, with delegated legislation, administrative adjudication and tribunalisation, has blurred the lines but has not displaced the doctrine. The judiciary enforces the doctrine through:
- Judicial review of legislation and administrative action;
- Insistence on independent appointment and tenure of judges;
- Striking down “encroachments” where one organ steps into the exclusive sphere of another.
VIII. Conclusion
In India, separation of powers operates as a functional separation with mutual checks and balances, forming part of the basic structure. While rigid separation is impossible in a modern welfare State, the doctrine survives as the constitutional guarantor of liberty and good governance.
