Extension of time claims are won on records made at the time, not arguments made later. What to record daily, what notice periods bind you, and how claims fail.

Every construction contract of any size runs late, and the question is never whether there was delay but who pays for it. Extension of time is the mechanism that decides. Contractors lose EOT claims they deserved to win with striking regularity, and the reason is almost never the merits — it is that the evidence was assembled after the fact instead of recorded as it happened.

The Notice Requirement Kills More Claims Than the Facts

Most standard forms require written notice of a hindrance within a defined window — commonly seven, fourteen or twenty-eight days from when the event arose or when the contractor became aware of it. Miss that window and the entitlement can lapse regardless of how genuine the delay was.

This is the single most expensive administrative failure in Indian contracting. The site knows about the delay on day one. The claim gets raised at final bill, eighteen months later. By then the notice period has long expired, the departmental officer who witnessed the hindrance has been transferred, and the claim rests on recollection.

Treat notice as a site duty, not a head-office one. The day a hindrance arises — drawings not issued, site not handed over, a stop-work instruction, an unforeseen utility — a written notice goes out and a hindrance register entry is made. Whether it eventually becomes a claim can be decided later; the right to claim cannot be recovered later.

Contemporaneous Records Are the Whole Case

"Contemporaneous" means recorded at the time by someone who was there. Arbitrators and departmental committees weigh such records heavily and discount reconstructions almost entirely. The records that carry weight:

Daily progress reports showing manpower deployed, plant on site, work executed and — critically — work that could not proceed and why. A DPR that records only what was done is half a record.
The hindrance register, maintained continuously, with each entry dated, described, and cross-referenced to the notice issued.
Weather records, dated, where rainfall or conditions stopped work. Our monsoon site management guide covers how rain days are evidenced and claimed.
Correspondence with dates, showing what you asked for, when, and what response you received — or did not.
Photographs, geo-stamped and dated, of the condition being claimed. A photograph carrying its own location and timestamp, sitting alongside that day's log, is evidence; a photograph in a WhatsApp thread is an assertion.
Joint measurements and site instruction records signed by both parties.

The common thread is that all of this must be captured on the day, at the site, by the supervisor. Any system that requires the record to be created later in an office produces exactly the reconstruction that fails. Offline-capable daily logs matter here for a practical reason: sites without signal are normal, and a record that cannot be made without connectivity does not get made at all.

Establishing Causation, Not Just Delay

A claim has to show that the event caused delay to the completion date, not merely that the event happened. That means demonstrating the affected activity was on the critical path, and showing the programme before and after.

This requires a baseline programme submitted and accepted at the start, and updated programmes showing actual progress. Contractors who never submit a baseline, or who submit one and never update it, have no basis on which to demonstrate critical-path impact. The delay may be real and the entitlement still unprovable.

Be honest about concurrency too. Where the client's delay and your own overlap, most regimes grant time but not money. Claims that ignore obvious concurrent contractor delay invite the whole submission to be treated as unreliable.

Time Versus Money

EOT and financial compensation are separate entitlements and should be claimed separately. An extension protects you from liquidated damages. Prolongation cost — extended site establishment, idle plant, retained staff, extended bank guarantee charges — is a further claim requiring its own proof: the actual costs incurred over the extended period, evidenced by records, not a percentage applied to the contract value.

Quantify from the books. A claim supported by attendance records, plant hire invoices and payroll for the specific period is assessable; a claim asserting a lump sum for "overheads and profit" is an invitation to a negotiation you will lose.

Build the Record Before You Need It

The uncomfortable truth about EOT is that the case is won or lost long before anyone writes the claim. By the time you decide to claim, the evidence either exists or it does not.

What this means practically: daily logs completed every day including the days nothing happened, hindrances noticed in writing within the contractual window, photographs dated at source, and correspondence tracked with response deadlines so nothing sits unanswered. The site management module captures the daily record with weather and geo-stamped photographs, and document & mail logs correspondence with the date a response is due — which is how a letter that needed a reply in fourteen days stops being discovered at month six.

The contractor with a complete contemporaneous record and the contractor without one are not in the same negotiation.

Book a ProjectSathi demo to see daily logs, hindrance records and correspondence tracking on your own project.