The Supreme Court has held that even during a National Emergency under Article 352, separation of powers as part of basic structure cannot be suspended, meaning executive, legislative, judicial functions remain distinct, with judicial review of Emergency actions permitted.

Separation of powers during Emergency: (a) Basic structure doctrine: Separation of powers part of basic structure (Kesavananda Bharati, 1973); cannot be destroyed even by constitutional amendment, (b) Application to Emergency: (i) Even during Emergency, separation of powers maintained: Executive, legislative, judicial functions remain distinct, (ii) Judicial review permitted: Courts retain power to review Emergency actions for constitutional compliance, (iii) Limits on executive power: Emergency powers subject to legislative approval, judicial review, not unlimited executive discretion, (c) Applications: (i) Post-1978: Courts more willing to examine Emergency actions for separation of powers compliance, (ii) Rights protection: Ensures Emergency powers used for genuine crisis response, not arbitrary executive power, (d) Rationale: (i) Constitutional supremacy: Separation of powers preserves constitutional order against arbitrary power, even during crisis, (ii) Rights protection: Separation of powers essential for rights protection, democratic governance, even during Emergency, (iii) Democratic legitimacy: Ensures Emergency powers used for genuine crisis response, not arbitrary power, (e) Illustrates constitutional resilience: Separation of powers as basic structure ensures Constitution's core identity preserved even during crisis; balance between crisis response capacity and preservation of constitutional democracy.