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How to write an EOT letter to the Authority Engineer

The short protective letter that keeps the right alive: what it must contain, what it must not, and a one-page structure with reference numbering that survives an audit two years later.

Before there is an EOT application there is the notice letter: a short, dated communication to the Authority Engineer recording that a hindrance has occurred, that it affects the works, and that the Contractor will seek an extension. On many Indian public contracts the notice window is short and treated as a condition precedent, so the letter must go out fast. It does not need to be the finished argument. It needs to exist.

What the letter must contain

  1. Your reference number and date. A consistent convention, for example SIP/NH88/2026/043, with a running number that never repeats.
  2. The addressee. The Authority Engineer by name and designation, with copies as the contract requires.
  3. Project and package identification. Contract number, package, chainage range.
  4. The contract provision. The notice and extension provisions of the executed agreement under which the letter is given.
  5. The hindrance. What, where, since when, and the register entry number.
  6. The effect. Which activities are affected. Keep it factual; the analysis comes later.
  7. The reservation. That the Contractor will seek an extension of time and reserves its rights regarding cost.
  8. A request. Usually for removal of the hindrance and for the AE's countersignature of the register entry.

What it must not contain

Write the notice for the person who will read it in three years, not for the person who will read it tomorrow.The tone rule for authority correspondence

A one-page structure

LineExample (illustrative)
Ref and dateSIP/NH88/2026/043 · 08 February 2026
ToThe Authority Engineer, PathWay Consultants, NH-88 Package III
SubjectNotice of hindrance: land not handed over, Ch. 42+300 to 44+100
Para 1Reference to the EPC Agreement and the provisions on extension of time and notice
Para 2The hindrance, the date it commenced, the register entry number (HR-011), and its continuing status
Para 3The activities affected (earthwork and structures in the stated chainage)
Para 4Reservation of the right to apply for extension of time and to claim compensation
Para 5Request for early handover and for countersignature of the register entry
EnclosuresRegister extract, site photographs dated, land status log

Continuing hindrances

If the hindrance is ongoing, the first letter is not the last. Send periodic follow-up letters at a fixed interval, each referencing the original, until removal. A single notice followed by silence for four months reads as acquiescence.

What this means in practice

  • One letter per hindrance, numbered, cross-referenced to the register entry.
  • Facts and reservation only; analysis and totals belong in the application.
  • Follow up on continuing hindrances at a fixed interval.
  • Log the letter against the register entry the day it is sent, with the dispatch method.

The DraftMyEOT notice generator drafts an authority-style letter from the register entry in three steps, numbers it per your convention, and logs it against the hindrance once you mark it sent.

Start a 48-hour draft →

This article is general information about how these contract mechanisms typically work. It is not legal advice, and it is not a substitute for review of your specific contract by a qualified professional.