Waiver / Renuntiatio Juris /

Waiver is the intentional relinquishment of a known right by a party who is entitled to insist on that right. A waiver may be express (a clear statement abandoning the right) or implied (conduct that is inconsistent with the intention to exercise the right). For a waiver to be effective, the party waiving must: (1) know of the right; (2) intend to relinquish it; and (3) take some action (or inaction) evidencing that relinquishment. Waiver operates across every branch of law — contract, property, procedure, and constitutional law — as a general doctrine preventing a party from blowing hot and cold: enforcing a right they have previously elected to abandon.

In contract law, waiver is closely related to — but distinct from — Section 63 ICA remission. Remission is unilateral acceptance of lesser performance; waiver is broader — it includes the abandonment of a right to object to a condition, a right to require performance in a particular manner, or a right to insist on a particular term. A waiver does not require consideration (unlike the common law position that variation of a contract requires consideration), and it may be inferred from conduct. The doctrine of promissory estoppel — codified in Section 115 of the Indian Evidence Act / Section 111 BSA — is closely related: where one party represents that it will not insist on a strict contractual right, and the other party acts to their detriment in reliance on that representation, the first party is estopped from going back on the representation.

Waiver in constitutional law is a significant concept. A person can waive certain constitutional rights — for example, the right to a jury trial (not applicable in India, but the principle extends to other procedural rights) or the right to cross-examine witnesses in consent-based proceedings. However, fundamental rights protected under Article 21 (right to life and personal liberty) cannot be waived — a detainee cannot consent to indefinite detention. The principle is that rights meant to protect the individual against State power cannot be waived, while rights meant to protect private parties against each other can generally be waived.

The distinction between waiver and forbearance is important. Waiver is a permanent relinquishment of a right — once waived, the right is gone. Forbearance is a temporary decision not to exercise a right — the creditor postpones enforcement but reserves the right to enforce later. A creditor who repeatedly accepts late payment may be found to have waived the right to insist on timely payment (at least without reasonable notice that strict compliance will now be required), while a single instance of late acceptance is typically forbearance, not waiver. Courts examine the course of conduct between the parties to determine which category applies.

For advocates, waiver is both a defensive and offensive tool: (1) Defendants should raise waivers as a defence — if the plaintiff previously accepted a defective performance, delayed payment, or a different form of performance, they have waived the right to object to that deficiency; (2) Procedural waivers should be tracked — any jurisdictional or formal objection that is not raised at the first available opportunity may be deemed waived; and (3) When acting for a party granting a concession, document it expressly as 'without waiver of any rights' to prevent it from being treated as a permanent relinquishment.