Guide

Termination by Contractor: FIDIC Clauses 16.1 & 16.2 Notice Guide

Last updated September 2026 · 10 min read

An Interim Payment Certificate has gone unpaid for six weeks, and the Contractor's finance team is asking hard questions. Someone on the project team suggests just pulling the crews off Site — the fastest way to hand the Employer a repudiation claim of the Contractor's own making. FIDIC gives the Contractor a lawful route out of a non-paying Employer, but the right to suspend work, and ultimately terminate the Contract, only exists once the correct notice under Sub-Clause 16.1 or 16.2 has been served, for the right number of days, on the right ground.

What Clause 16 Actually Gives the Contractor

Clause 16 is the Contractor's mirror to Clause 15 — where Clause 15 gives the Employer grounds to act against a defaulting Contractor, Clause 16 gives the Contractor grounds to act against a defaulting Employer. It contains two separate rights, not one:

Sub-Clause 16.1 — the right to suspend work, or reduce the rate of work, without ending the Contract.
Sub-Clause 16.2 — the right to terminate the Contract outright.

Both rights are triggered almost entirely by money: the Engineer failing to certify, the Employer failing to prove it can pay, or a certified sum not arriving. Neither is self-executing — the Contractor cannot rely on either simply because a payment is late. It first has to serve the notice the relevant Sub-Clause demands and let the stated period run. Downing tools early is not suspension under Clause 16; it is the Contractor's own breach.

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Key Takeaway: Clause 16 gives the Contractor two separate rights — suspend under 16.1, terminate under 16.2 — both triggered by the Employer's money failures, and both requiring a notice to be served and run its course before the Contractor acts.

Step One: The Sub-Clause 16.1 Suspension Notice (21 Days)

Sub-Clause 16.1 applies in two situations: the Engineer fails to certify in accordance with Sub-Clause 14.6, or the Employer fails to comply with Sub-Clause 2.4 (providing reasonable evidence of its financial arrangements) or Sub-Clause 14.7 (paying a certified sum on time).

Once one of those has happened, the Contractor may give the Employer not less than 21 days' notice, then suspend work — or simply reduce the rate of work — unless and until the missing certificate, evidence, or payment arrives. The suspension is reversible: the moment the Contractor receives what it was owed, it must resume normal working as soon as reasonably practicable.

Delay or cost the suspension itself causes is a separate entitlement, made under Sub-Clause 20.1 in the usual way — notice within 28 days of awareness, particulars to follow. Do not fold that claim into the 16.1 notice; the two run on different clocks.

[Date] To: [Employer's name and address] Project: [Project name and contract reference] Notice of Suspension of Work under Sub-Clause 16.1 The Contractor gives notice under Sub-Clause 16.1 that, unless it receives [the Interim Payment Certificate due under Sub-Clause 14.6 / reasonable evidence of financial arrangements under Sub-Clause 2.4 / payment due under Sub-Clause 14.7] by [date, not less than 21 days from this notice], the Contractor will suspend the Works, or reduce the rate of work, until the default is remedied. Relevant facts: [certificate, statement, or payment reference; the sum or evidence outstanding; and the date it fell due]. This notice is without prejudice to the Contractor's right to terminate under Sub-Clause 16.2 if the default continues, and to an extension of time and Cost under Sub-Clause 20.1 for any resulting delay or cost. Yours faithfully, [Name] [Designation, for the Contractor]

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Key Takeaway: The suspension notice needs 21 days, names the specific default — certificate, financial evidence, or payment — and is reversible the moment the Employer puts it right. Any delay or cost the suspension itself causes is claimed separately under Sub-Clause 20.1.

The Seven Grounds for Termination Under Sub-Clause 16.2

If the default is not cured, Sub-Clause 16.2 gives seven grounds to terminate the Contract entirely:

(a) No reasonable evidence of financial arrangements within 42 days of the Contractor's 16.1 notice.
(b) The Engineer fails to issue a Payment Certificate within 56 days of the Statement and supporting documents.
(c) A certified sum is not paid within 42 days after the Sub-Clause 14.7 deadline, other than a proper Sub-Clause 2.5 deduction.
(d) The Employer substantially fails to perform its obligations under the Contract.
(e) The Employer fails to comply with Sub-Clause 1.6 (Contract Agreement) or 1.7 (Assignment).
(f) A prolonged Sub-Clause 8.11 suspension affects the whole of the Works.
(g) The Employer becomes bankrupt, insolvent, or goes into liquidation.

Grounds (a)–(c) are the money grounds — evidence, certification, or payment not arriving inside a fixed window. Grounds (d) and (e) cover broader non-performance. Grounds (f) and (g) are different in kind — a paralysed project, or an Employer who may no longer exist as a functioning counterparty — which is why they are treated differently on timing, covered next.

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Key Takeaway: Seven grounds, but three families: unpaid money (a–c), broad non-performance (d–e), and a paralysed or insolvent Employer (f–g). Name the exact ground relied on in the notice — do not just describe a general grievance.

The Termination Notice — 14 Days, or Immediate for Two Grounds

For grounds (a)–(e), the Contractor must give the Employer 14 days' notice before termination takes effect — a final window that often produces the payment or performance the Contractor was chasing all along.

For grounds (f) and (g), the Contractor may terminate immediately, with no waiting period. If the whole of the Works is already paralysed by a prolonged suspension, or the Employer is insolvent, waiting protects nothing and only adds risk.

[Date] To: [Employer's name and address] Project: [Project name and contract reference] Notice of Termination under Sub-Clause 16.2 The Contractor gives notice under Sub-Clause 16.2([a–e / f / g]) that it will terminate the Contract with effect from [date — not less than 14 days from this notice, or immediately for grounds (f) or (g)]. Ground relied upon: [state the specific default — e.g. non-payment of the sum certified in Interim Payment Certificate No. [X], due on [date] and unpaid as of this notice]. The Contractor's prior notice under Sub-Clause 16.1, dated [date], is referred to. That default has not been remedied. The Contractor reserves all rights under Sub-Clause 16.4, including return of the Performance Security, payment under Sub-Clause 19.6, and loss of profit and other loss or damage suffered as a result of this termination. Yours faithfully, [Name] [Designation, for the Contractor]

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Key Takeaway: Most grounds need 14 days' notice; a paralysed project under (f) or an insolvent Employer under (g) lets the Contractor terminate immediately. Name the specific ground and reference the earlier 16.1 notice — a termination notice that reads as a general complaint invites a challenge.

What Happens After Termination: Payment Under Sub-Clause 16.4

Termination under 16.2 is one of the few outcomes in FIDIC that is actually good news for the Contractor's cash position. Under Sub-Clause 16.4, once termination takes effect, the Employer must return the Performance Security, pay a Sub-Clause 19.6 valuation — the work done, materials and Plant ordered, and demobilisation cost — and pay the Contractor's loss of profit and any other loss or damage suffered as a result.

That third item is worth underlining. Under Sub-Clause 15.5, the Employer's own right to terminate for convenience, the Contractor also gets a Sub-Clause 19.6-style valuation — but loss of profit is deliberately excluded. Terminating under 16.2 for the Employer's default is materially better for the Contractor than being terminated for the Employer's convenience, which is exactly why getting the ground and the notice right matters.

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Key Takeaway: Sub-Clause 16.4 returns the Performance Security, pays a Sub-Clause 19.6 valuation, and — unlike a Clause 15.5 termination for convenience — adds the Contractor's loss of profit. Getting the notice right is worth real money.

How the FIDIC 2017 Second Edition Changes This

The clause numbering carries over unchanged — Sub-Clause 16.1 Suspension by Contractor, 16.2 Termination by Contractor, 16.3 Cessation of Work and Removal of Contractor's Equipment, 16.4 Payment after Termination. The underlying money-based grounds are also largely the same.

What changes is the procedure. For most grounds, 2017 splits 16.2 into two steps: a Notice of intention to terminate, giving the Employer a further chance to remedy before termination takes effect, then a formal Notice of Termination if the default persists. For the most serious grounds — repeated defaults, a prolonged Exceptional Event, or insolvency — the Contractor can go straight to an immediate Notice of Termination. Confirm which edition applies before following the 1999 sequence above.

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Key Takeaway: FIDIC 2017 keeps the same clause numbers but adds an intermediate Notice of intention to terminate for most grounds, reserving an immediate Notice of Termination for the most serious cases such as the Employer's insolvency.

Common Mistakes That Undermine a Contractor's Position

Stopping work early. Downing tools before the notice period has run turns a protected suspension into an unprotected walk-off.
Skipping the suspension notice. Serving a 16.2(a) termination notice without ever having served the 16.1 notice that ground depends on.
No named ground. Complaining generally about "non-payment" instead of citing (a) through (g).
Jumping the grace period. Terminating before the 42 or 56-day grace period has expired, or confusing it with the unrelated 28-day Sub-Clause 20.1 claims deadline.
A thin paper trail. The case rests on dates — Statement submitted, Certificate due, payment arrived or didn't.

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Key Takeaway: Most failed Clause 16 notices fail on sequence and dates, not merit — stopping work too early, skipping the 16.1 step, or terminating before the grace period has run. Keep a precise record of every certificate and payment date from day one.

Frequently Asked Questions

Can the Contractor stop work the day the Employer misses a payment?

No. Sub-Clause 16.1 requires not less than 21 days' notice before suspending work or reducing the rate of work, naming the specific default. Stopping work before that period has run is not a protected suspension — it is the Contractor's own breach, and the Employer may treat it as a repudiation.

What is the difference between suspending work and terminating the Contract under Clause 16?

Suspension under 16.1 is reversible — work stops but the Contract continues, resuming once the default is cured. Termination under 16.2 ends the Contract entirely. Suspension needs 21 days' notice; termination needs 14 days for most grounds, or is immediate for a prolonged 8.11 suspension or insolvency.

Does the Contractor get paid loss of profit after terminating under Clause 16.2?

Yes. Sub-Clause 16.4 returns the Performance Security, pays a Sub-Clause 19.6 valuation, and adds loss of profit and other loss suffered as a result. That is a better outcome than a Sub-Clause 15.5 termination for convenience, where loss of profit is excluded.

Do the Clause 16 notice periods change under FIDIC 2017?

The clause numbers stay the same — 16.1 Suspension by Contractor, 16.2 Termination by Contractor, 16.3 Cessation of Work and Removal of Contractor's Equipment, 16.4 Payment after Termination. The 2017 edition adds an intermediate Notice of intention to terminate for most grounds, giving the Employer a further chance to remedy, and reserves an immediate Notice of Termination for the most serious grounds, such as insolvency.

Is terminating under Clause 16.2 the same as just walking off the job?

No. A Clause 16.2 termination is a formal right that depends on citing one of the seven grounds and serving the correct notice for the correct period. Walking off Site without following that sequence is not a termination under the Contract — it exposes the Contractor to a repudiation claim instead.

Authoritative Sources

This guide reflects the FIDIC Conditions of Contract and established construction-law authority:

FIDIC Conditions of Contract — the official contract suite published by the International Federation of Consulting Engineers, setting out the Clause 16 suspension and termination provisions.
Suspension and Termination, Nicholas Gould (Fenwick Elliott LLP) — a construction-law analysis of the Sub-Clause 16.1 and 16.2 grounds and notice sequence covered above.

About the Author

Muhammad M. Jiwani is a Project Director with 15 years' experience on major infrastructure and energy projects administered under FIDIC contracts. He writes from first-hand experience serving notices and managing contractual claims on live projects.

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