Quick answer: A contractor can win an extra work claim in a construction contract when the employer ordered or accepted work outside the agreed scope. Follow the variation clause first. If the contract is silent on the rate, Section 70 of the Contract Act and quantum meruit may apply. Work done without the required written approval usually fails.
An extra work claim in a construction contract arises when a contractor performs work that the drawings, specifications or bill of quantities (BOQ) did not cover. Employers often say the work fell within scope or lacked approval. This guide explains how Indian courts and tribunals decide such claims.
What Counts as an Extra Work Claim in a Construction Contract?
Most Indian works contracts separate three situations. First, an instructed variation is a change the engineer or employer orders in writing. Second, a quantity increase happens when measured quantities simply exceed BOQ estimates. Third, extra items are new kinds of work with no BOQ rate at all.
Each carries a different pricing rule. Variations and extra items usually need a new rate, while plain quantity increases often stay at the BOQ rate unless a deviation limit applies.
The Legal Basis: Contract First, Section 70 Second
The contract always comes first. Clauses on variations, deviation limits, notice periods and rate fixation govern the claim.
Where the contract does not cover the situation, Section 70 of the Indian Contract Act, 1872 can help. It applies when a person lawfully does something for another, does not intend to act gratuitously, and the other person enjoys the benefit. The contractor then recovers a reasonable value, often called quantum meruit.
Key Case Law on Extra Work and Variations
- Somdatt Builders–NCC–NEC (JV) v. NHAI (Supreme Court, 27 January 2025, 2025 INSC 113): The Court held that excess geogrid quantities beyond the BOQ were not an instructed variation. It restored an award that paid them at BOQ rates and stressed limited interference under Sections 34 and 37.
- Ramesh Kumar Jain v. Bharat Aluminium Company Ltd. (Supreme Court, 18 December 2025, 2025 INSC 1457): The Court reinstated an award granting quantum meruit for extra work where the contract fixed no rate.
- D.S. Partnership v. NATRIP Implementation Society (Delhi High Court, 2 September 2026): The Court upheld an award rejecting payment for additional work. The contractor had not obtained the prior written approval the contract required, and Section 70 could not override that procedure.
- BSNL v. Vihaan Networks Ltd. (Delhi High Court, 3 October 2023): The Court allowed reasonable remuneration under Section 70 for work done at BSNL’s instance, even without a concluded contract.
The pattern is clear: tribunals reward contractors who follow the contract, but reject claims that skip mandatory approvals.
Step-by-Step Checklist for Contractors
- Read the variation clause. Note who can order changes, the deviation limit, and the notice period.
- Get written instructions. Ask the engineer to confirm any oral direction in writing before you start.
- Give timely notice. Send a claim notice within the contractual period, even if talks continue.
- Record everything. Keep site diaries, joint measurement records, photographs and hindrance registers.
- Propose a rate. Derive it from BOQ items, the schedule of rates, or actual cost plus a reasonable margin.
- Reserve your rights. Avoid unqualified no-claim certificates while the claim stays open.
- Escalate in time. Use the tiered dispute clause and then arbitration before limitation runs out.
Employers should mirror this list. They should issue clear variation orders, fix rates promptly and record objections in writing. Where a dispute reaches court, experienced commercial litigation lawyers in Delhi NCR can assess whether Section 34 or Section 37 offers a realistic remedy. For contract drafting and claim strategy, see our infrastructure and construction law practice.
Frequently Asked Questions
Can a contractor claim payment for extra work without a written order?
Sometimes. If the contract makes prior written approval mandatory, the claim usually fails. If the employer knowingly accepted the benefit and the contract is silent, Section 70 may still apply.
Is an increase in quantity the same as a variation?
No. In Somdatt Builders, the Supreme Court held that excess quantities alone did not amount to an instructed variation, so BOQ rates applied.
What rate applies to extra items in a construction contract?
The contract’s rate-fixing clause applies first. Where none exists, tribunals usually award a reasonable rate based on market or actual cost.
Can an arbitrator award quantum meruit for extra work?
Yes, where the contract fixes no rate and the employer ordered or accepted the work. The Supreme Court upheld such an award in Ramesh Kumar Jain v. BALCO (2025).
What evidence supports an extra work claim?
Written instructions, revised drawings, joint measurement records, site diaries, photographs and correspondence carry the most weight.
Does a no-claim certificate bar an extra work claim?
Not always. A contractor can challenge it by proving coercion or economic duress, but clear evidence is essential.
Lex Pleaders advises contractors, employers, banks and NBFCs on extra work, variation and BOQ disputes in construction and EPC contracts, from claim notices to arbitration and court challenges. As a law firm in Delhi NCR, we act for clients across India. Write to us at lexpleadersindia@gmail.com to discuss your matter.
Disclaimer: This article offers general information only and does not constitute legal advice.