Quick answer: Delay claims in construction contracts let a contractor recover extra costs when the employer causes delay. Typical heads are site overheads, head office overheads, idle plant and lost profit. Indian courts allow these under Section 73 of the Contract Act, but only with proof. A formula such as Hudson cannot replace evidence of actual loss.
Delay claims in construction contracts are among the largest and most contested items in Indian infrastructure arbitration. However, the Supreme Court has tightened the evidence a contractor must produce. This guide explains the heads of claim, the proof required and the latest rulings.
What Are Delay Claims in Construction Contracts?
A delay claim is a contractor’s demand for money when the employer’s acts or omissions extend the work. Common causes include late land handover, delayed drawings and slow approvals. An extension of time only protects the contractor from liquidated damages. By contrast, a delay claim seeks compensation for the extra cost of staying on site longer.
The legal basis is Section 73 of the Indian Contract Act, 1872, which awards damages for loss that naturally arises from a breach. Section 55 also matters, because a contractor who accepts late performance must give notice to preserve its claim. Our guide on extension of time in construction contracts covers the EOT side in detail.
Common Heads of Delay and Prolongation Claims
- Site overheads: staff salaries, site offices, utilities, security and insurance for the extended period.
- Head office overheads: a share of corporate costs that the delayed project kept tied up.
- Idle plant and labour: machinery and crews kept standing while work stopped.
- Loss of profit or profitability: profit the contractor could have earned on other work.
- Price escalation and financing costs: higher material rates and extended bank guarantee charges.
How Courts Treat Hudson and Other Formulas
Contractors often quantify head office overheads and lost profit with the Hudson, Emden or Eichleay formulas. Indian courts still accept them, but only as a tool to measure a loss that the contractor has already proved. In other words, the formula measures the loss; it does not establish it.
Key Case Law on Delay Claims
Batliboi Environmental Engineers v. HPCL (2023 INSC 850, 21 September 2023): The Supreme Court held that a contractor claiming lost profit must show that it lost other work because of the delay. Evidence could include declined tenders and a fall in turnover in its books. Without that proof, the contractor may only recover interest on capital that remained blocked.
Unibros v. All India Radio (2023 INSC 931, 19 October 2023): The Court set out what a claimant must prove for loss of profitability. The delay must not be the claimant’s fault, and the claimant must show credible evidence that it lost real opportunities. The Court called Hudson well accepted but said it cannot operate in a vacuum.
NHAI v. Oriental Structural Engineers (Delhi High Court, 14 May 2026): The court upheld a prolongation award on a Jhansi bypass project. The tribunal traced the delay to NHAI’s land acquisition failures and assessed costs on evidence. So the court refused to interfere under Section 34.
NHAI v. Progressive Constructions (Delhi High Court, Division Bench, 18 June 2026): The court set aside overhead and idle machinery awards worth crores. The Engineer had recorded concurrent delay with no prolongation cost, and the contractor never objected for years. Consequently, the court treated the claims as waived by acquiescence.
How to Build a Delay Claim: Contractor Checklist
- Issue written delay notices within the contract’s time limit for every employer-caused event.
- Reserve your right to compensation each time you accept an extension of time.
- Challenge any Engineer’s finding of concurrent delay promptly, before the DRB if needed.
- Keep contemporaneous records: site diaries, idle plant logs, payroll and hire invoices.
- Collect proof of lost opportunities, such as declined tenders and audited turnover figures.
- Check the contract for clauses that bar damages for delay or idle resources.
Where a dispute escalates beyond arbitration into enforcement or civil recovery, our commercial litigation lawyers in Delhi NCR can support the case. For EPC, PPP and BOT matters, see our infrastructure and construction law practice.
Frequently Asked Questions
What is a prolongation claim in construction?
A prolongation claim seeks the extra time-related costs of an extended project, such as site staff, offices and plant. The contractor must show the employer caused the extension.
Is the Hudson formula accepted in India?
Yes, but only to quantify a proven loss. After Unibros and Batliboi, an award based merely on a formula, without evidence of loss, risks being set aside.
Can a contractor claim damages after accepting an extension of time?
Yes, if the contractor reserved its claim and gave notice. Silent acceptance over years can amount to waiver, as Progressive Constructions shows.
What evidence proves loss of profit due to delay?
Courts look for declined tenders, lost bids, idle capacity and a drop in turnover shown in audited accounts.
Does a clause barring idle-resource claims defeat every delay claim?
Not always. Tribunals read such clauses narrowly, so the exact wording decides the outcome.
Lex Pleaders advises contractors, employers, banks and NBFCs on delay and prolongation claims, EPC disputes and construction arbitration as a law firm in Delhi NCR. Write to us at lexpleadersindia@gmail.com to discuss your matter.
Disclaimer: This article offers general information only and does not constitute legal advice.