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Construction disputes in arbitration: unpaid bills, delay and extension of time, extra work, escalation, retention money, LD deductions and bank guarantees.

Legal advice and representation for borrowers, guarantors and lenders in Arbitration Matters, led by Advocate BK Singh.

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Last reviewed: October 2026

Construction contracts break down in familiar ways. The site is handed over late. Drawings keep changing. Extra items are ordered by email and never priced. Running bills are short-paid, retention money is held back, and at the end the employer deducts liquidated damages for a delay it caused. Most construction and infrastructure contracts send these disputes to arbitration.

This page is for contractors, sub-contractors, EPC companies, developers and project owners in private and public projects. A construction arbitration is document-heavy. Claims are won on the hindrance register, letters, minutes and measurement records, not on general statements that "the employer delayed". A contested claim usually takes one to two years before a tribunal, depending on the number of claims and witnesses.

We prepare and defend construction claims, starting from the contract and the site record, and handle the court applications around them, including urgent protection of bank guarantees.

Common claimsUnpaid bills, prolongation costs, extra items, escalation, idle labour and machinery, refund of LD and retention
Key evidenceHindrance register, correspondence, measurement records, programme
Typical time12 to 24 months for a contested claim
Also watchBank guarantee invocation and termination
LawArbitration Act, Contract Act Sections 55, 73 and 74

हिंदी में सारांश

निर्माण अनुबंधों में विवाद आम हैं, जैसे साइट देर से मिलना, ड्रॉइंग बार-बार बदलना, अतिरिक्त काम का भुगतान न होना, रनिंग बिल कम देना, रिटेंशन मनी रोकना और देरी के लिए लिक्विडेटेड डैमेज काटना। ज़्यादातर अनुबंध ऐसे विवाद आर्बिट्रेशन में भेजते हैं। निर्माण दावे दस्तावेज़ों पर जीते जाते हैं, जैसे हिंड्रेंस रजिस्टर, पत्राचार, मीटिंग के मिनट्स और माप रिकॉर्ड। विवादित दावे में आम तौर पर एक से दो साल लगते हैं। बैंक गारंटी भुनाने का ख़तरा हो, तो तुरंत अदालत से सुरक्षा ली जा सकती है।

Check first

Is this your situation?

  • Your running bills or final bill are unpaid or short-paid
  • The employer has deducted liquidated damages for delay that was not your fault
  • You did extra or varied work that has not been priced or paid
  • The project was prolonged and you had idle labour, machinery and overheads
  • Retention money or security deposit has not been released after completion
  • Your contract was terminated and the employer has taken over your materials and plant
  • A performance or mobilisation bank guarantee has been invoked or threatened
  • You are an employer facing a large, poorly documented contractor claim
What gets claimed

Common construction claims

Unpaid and short-paid bills

Certified work not paid, or measurements reduced without reason. Often the simplest and strongest claim.

Extension of time and prolongation

Additional time-related costs caused by employer delays: site overheads, idle plant and labour, extended bank guarantees and insurance.

Variations and extra items

Work outside the original scope, ordered by the employer or its engineer, priced under the contract or at reasonable rates.

Price escalation

Increases in material and labour costs under a price variation clause, or claimed as damages where delay was the employer's fault.

Refund of liquidated damages

Return of LD deducted where the delay was caused by the employer or no loss was suffered.

Wrongful termination

Loss of profit on unexecuted work, return of materials and plant, release of guarantees and payment for work done.

The core issue

Delay claims: who caused the delay, and what does the contract say?

Almost every construction arbitration turns on delay. The employer says the contractor was slow and deducts liquidated damages. The contractor says it was held up by late site handover, late drawings, design changes, delayed approvals and late payments, and claims extension of time and prolongation costs.

The tribunal will want to see which events caused delay to the completion date, as opposed to delays to non-critical activities. For larger projects, a delay analysis based on the programme is often needed, sometimes with an expert. For smaller projects, a careful chronology from the hindrance register, letters and minutes may be enough. The key is contemporaneous evidence: records made at the time, not reconstructions years later.

Liquidated damages clauses are interpreted under Section 74 of the Contract Act. After Kailash Nath Associates v DDA (2015), an employer can recover only reasonable compensation up to the stated amount, and where loss can be proved, it must be shown. In public works, where loss is hard to quantify, the stated amount may be treated as a genuine pre-estimate. But an employer that caused the delay, or granted extensions without reserving LD, may lose the right to deduct.

Where the contract says time extensions are the contractor's only remedy for delay, and bars monetary compensation, tribunals often still award costs for delays caused by the employer's breaches. Courts have been reluctant to interfere with such findings in Section 34 proceedings, provided the tribunal reasoned through the clause.

Step by step

How we build a construction claim

1

Read the contract set

General conditions, special conditions, bill of quantities, specifications, drawings list and any amendments. Construction contracts often have conflicting documents, and the order of precedence clause matters.

2

Organise the record

Hindrance register, site diary, correspondence, minutes of progress meetings, measurement books, running bills and payment records, sorted by date and issue.

3

Build the chronology

A clear timeline linking each delay or change to its cause and effect, with references to documents.

4

Price each claim

Each head of claim is quantified with supporting calculations: actual costs, rates in the contract, or reasonable market rates.

5

Comply with notices and pre-arbitration steps

Many contracts require claims to be notified within a time, and disputes referred to the engineer or a dispute board first. We check and deal with these steps.

6

Start arbitration and protect guarantees

We send the arbitration notice, and if guarantees are at risk, apply for urgent court protection.

7

File the claim, lead evidence, argue

The statement of claim, witness statements of site and commercial staff, expert evidence where needed, cross-examination and final arguments.

What to expect

Time and typical cost range

Arbitrators' fees in construction cases can be significant, because claims are large. Our fees are agreed in writing at the start, stage by stage, and are not linked to the result.

StageUsual timeCost
Record review and claim preparation4 to 12 weeksOur fee; expert fees if delay or quantum experts are needed
Notice and constitution of tribunal1 to 6 monthsOur fee
Pleadings6 months after appointmentArbitrators' fee instalments
Evidence and hearings6 to 12 monthsArbitrators' fee; venue and transcription
AwardWithin 12 months of pleadings, extendableBalance fees
Court challenge, if any1 to 3 yearsCourt fee and our fee
Paperwork

Documents to gather

Contract

  • Agreement, general and special conditions, BOQ
  • Drawings issued, with dates
  • Letters of award, amendments and extensions

Site record

  • Hindrance register and site diary
  • Minutes of progress meetings
  • Programme and revised programmes

Money

  • Running bills, measurements and certificates
  • Payment records and deductions
  • Bank guarantees, retention and security deposit details
Forums

Where construction disputes go

MatterForum
Claims under the contractArbitral tribunal under the arbitration clause
Engineer's decision or dispute board, if the contract requiresFirst step before arbitration
Urgent protection of bank guarantees and site materialsCourt under Section 9
Court appointment if the employer won't appointHigh Court under Section 11
Sub-contractor who is a registered micro or small enterpriseMSME Facilitation Council may be an option, though courts have differed on works contracts
Award challengeCourt of the seat under Section 34
Rising costs

Escalation and price variation

Most longer contracts have a price variation clause linking payment to indices for cement, steel, fuel, labour and other inputs. Disputes arise when the employer applies the formula wrongly, freezes escalation at the original completion date, or refuses it after an extension.

Where the contract has a formula, the claim is largely arithmetic, and the question is which indices and base dates apply. Where the contract has no escalation clause, or caps it, the contractor may still claim increased costs as damages if the delay was caused by the employer. Tribunals have awarded such damages, and courts have usually upheld them where reasoned.

A frequent point is whether escalation is payable for work done during an extension granted "without financial implication". Contractors who accepted such extensions without protest may have difficulty. If an extension letter says this, reply in writing reserving your claims before you continue work.

When the contract ends badly

Termination, take-over and encashment

When an employer terminates a construction contract, it often encashes performance and mobilisation guarantees, takes over materials and plant at site, and gets the balance work done through another contractor at the original contractor's "risk and cost". Each of these steps can be challenged.

Termination must follow the contract's notice and cure provisions. A termination without a valid notice period, or for reasons the employer itself caused, may be wrongful. If it is wrongful, the contractor can claim loss of profit on the balance work, return of materials and plant or their value, and refund of encashed guarantees. Risk-and-cost claims by the employer must be proved with the actual cost of completing the original scope, not an enlarged one.

Bank guarantee encashment is hard to stop, because courts treat guarantees as independent. But where the employer's own letters undermine its invocation, or the invocation does not follow the guarantee's terms, urgent relief is possible. See bank guarantee disputes.

Defending a claim

For employers and developers

Employers often face claims built on a large number of heads, many of them overlapping. A good defence starts by matching each head to the contract clause that governs it, identifying claims barred by the contract (such as no-damages-for-delay clauses or claims not notified in time), testing quantum against actual records, and preparing a counter-claim for defects, delays and risk-and-cost amounts. Contractors' own correspondence often contains admissions about their delays.

Public sector employers should also keep the deposit and stay rules in view if an award goes against them. Courts apply the same principles as for money decrees. See government contract arbitration.

Legal basis

Laws that apply

Indian Contract Act, 1872 (Sections 55, 73 and 74)

Time as the essence, damages for breach, and liquidated damages.

Arbitration and Conciliation Act, 1996

The procedure, interim relief, award and challenge.

Specific Relief Act, 1963

Limits on forcing performance of construction contracts.

Limitation Act, 1963

Three years for most claims, usually from completion or final bill.

MSMED Act, 2006

Possible route for micro and small sub-contractors, subject to the debate on works contracts.

Illustration

A highway sub-contract with shifting drawings

Here's a made-up example. A Ghaziabad sub-contractor was engaged for culverts and minor bridges on a state highway project, with a 12-month completion period. The main contractor issued revised drawings for 40% of the structures over eight months and delayed handing over two stretches because of land issues. The work took 22 months. The main contractor deducted 10% of the contract value as liquidated damages and withheld retention.

We worked with the sub-contractor's site engineer to build a chronology from the hindrance register and 300-odd emails. Each revised drawing was linked to the structures affected and the time lost. We claimed refund of LD, release of retention, prolongation costs for idle machinery and staff, and price escalation for the extended period.

The tribunal found that most of the delay was caused by drawing revisions and land issues, refunded the LD, released retention, and allowed part of the prolongation claim based on deployment records. The escalation claim was allowed only from the date of the main contractor's first extension letter, because earlier extensions had been accepted without reservation.

Our approach

How we work

We are a litigation and advisory practice led by Advocate BK Singh, with offices in Dwarka (New Delhi) and Vaishali (Ghaziabad). This is what you can expect:

  • Record-driven claims: we work through the site record with your engineers.
  • Realistic quantum: claims priced on evidence, not hopes.
  • Guarantee protection: urgent applications prepared when guarantees are at risk.
  • Experience on both sides: contractors, sub-contractors and employers.
  • Written fee terms: agreed stage by stage, never linked to the outcome.
Avoid these

Mistakes contractors make

  • Not recording hindrances in writing when they happen
  • Accepting extensions "without financial implication" without protest
  • Signing "no claim" certificates to get the final bill released
  • Starting arbitration years after completion without checking limitation
  • Claiming every possible head without evidence for each
  • Ignoring the contract's notice and dispute board steps
Getting the last payments released

Retention money, security deposit and the final bill

The last 5% to 10% of a construction contract is often the hardest to collect. Retention money is held back from each running bill until the defects liability period ends. Security deposits and performance guarantees are held until the employer certifies that defects have been put right. Final bills sit unprocessed while the employer raises new complaints.

The contract usually says when retention becomes payable: on completion, on issue of a taking-over certificate, or at the end of the defects liability period. If that date has passed and the employer has not identified specific defects in writing, the claim is usually straightforward. Interest on delayed release can also be claimed, subject to the contract.

Final bill disputes often involve the employer reducing quantities measured during the work, or applying deductions it never raised earlier. Measurements recorded in the measurement book and signed by the employer's engineer carry weight. Reductions made later, without a joint re-measurement, are vulnerable.

Contractors are sometimes asked to sign a "no dues" or "no claim" certificate before the final bill is released. Tribunals look at whether such a certificate was a genuine settlement or was extracted as a condition of payment. In several cases, courts have upheld awards that ignored certificates signed under financial pressure. Still, the safer course is to write separately, the same day, that the certificate is signed under protest to obtain payment and that your claims are reserved.

Proving the claim

Experts and evidence in construction cases

Construction tribunals are often made up of a retired judge and one or two technical members, such as retired chief engineers. They understand site realities, but they still decide on evidence.

Witness statements from the project manager, site engineer and billing engineer explain what happened and introduce the records. For large claims, a delay expert analyses the programme to show which events affected the completion date, and a quantum expert prices the claims. Experts' fees add to cost, so we use them where the size and complexity of the claim justify it.

Photographs, drone images, test reports, weather data and labour attendance records can all help. Most of all, the tribunal will be persuaded by letters written at the time that tell the same story you are telling now. If you are still on site, start writing those letters today: each hindrance, each changed drawing, each late payment, recorded in a short letter to the employer with a copy kept.

A note for public works

Government and PSU construction contracts

Contracts with NHAI, CPWD, state PWDs, railways, metro corporations and municipal bodies follow standard forms with their own dispute clauses. Some still provide for a sole arbitrator nominated by a senior officer of the department, which raises the issues discussed on appointment of arbitrator. Many NHAI contracts provide for a three-member tribunal, with conciliation through a committee first.

Public sector employers commonly challenge adverse awards under Section 34 and then appeal under Section 37. Courts insist on deposit of the awarded amount, or a substantial part, as a condition of stay, applying Pam Developments (2019). Union government guidelines allow payment of a part of the awarded amount against a bank guarantee pending challenge in some categories. Contractors with large public works claims should plan for this longer path from the outset. See government contract arbitration.

FAQs

Frequently Asked Questions

Can a contractor claim compensation for delay caused by the employer?

Yes, usually as prolongation costs: site overheads, idle plant and labour, extended guarantees. Clauses limiting such claims are interpreted by the tribunal and do not always bar them.

Can the employer deduct liquidated damages without proving loss?

Under Section 74 of the Contract Act, only reasonable compensation up to the stated amount. Where loss can be proved, it must be. An employer that caused the delay may not be entitled to LD at all.

What is a hindrance register?

A site record of events that hold up work, signed by both sides' representatives. It is often the most important evidence in a delay claim.

I signed a "no claim" certificate to get my final bill. Can I still claim?

Possibly. If the certificate was signed under economic pressure to release payment, tribunals have sometimes refused to treat it as a waiver. It depends on the facts.

When does limitation start for a construction claim?

Usually from when the final bill or payment fell due, or from completion. Each claim may have its own date. Check early.

Can I stop the employer from encashing my bank guarantee?

Only in limited cases, such as fraud or special equities. Strong documents showing the invocation is not genuine help.

Do I need a delay expert?

For large, complex projects, often yes. For smaller projects, a well-documented chronology may be enough.

Can a sub-contractor claim directly against the main employer?

Usually not, unless there is a direct contract or the main contractor assigns its claims. Claims normally go against the main contractor.

What if the contract requires the engineer's decision first?

Follow that step or record why it failed. Tribunals and courts usually expect the parties to have tried.

How long does a construction arbitration take?

For a contested case with several claims, usually one to two years from appointment, longer if experts are involved.

Can a micro or small sub-contractor use the MSME council?

Possibly, but High Courts have differed on whether works contracts fall within the MSMED Act. Take advice before choosing.

Is escalation payable during an extended period?

Under a price variation clause, usually yes, unless the extension letter excluded it and you accepted without protest.

Construction claim or LD deduction?

Send us the contract, your last bill and the main correspondence. We will tell you which claims are strong and how to start.

This page gives general information about arbitration and dispute law in India as it stood when it was last reviewed. It is not legal advice on your case and does not promise any result. Time limits, fees and court rules change, and the right step depends on your own contract, dates and documents, so take advice before acting.

Are you having a legal problem in Construction & Infrastructure Contract Arbitration? You don't have to deal with it alone. Let's discuss your situation and explore the appropriate approach to handle it.

There is no pressure or difficult legal language, only clear information based on the circumstances of your Construction & Infrastructure Contract Arbitration matter.

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