Settlement agreement vs COT3
Both settle employment claims, but they work very differently. Understand how each is created, what it covers, and which protections apply to you.
Build your employment tribunal claim — free to start
Build your claim free
If the employer insists on a settlement agreement, do I have to accept it instead of a COT3?
No, you can’t be forced to accept one. But the employer can refuse to settle any other way. If you want a COT3 specifically, the employer must agree to ACAS conciliation — they may refuse.
Does a COT3 require a solicitor to review it?
No — unlike a settlement agreement, a COT3 doesn’t require independent legal advice. It’s still strongly advisable to have someone review it before agreeing, especially if it settles all claims.
Is the tax treatment different for settlement agreements vs COT3s?
No. Both are treated the same: the first £30,000 is tax-free under section 403 ITEPA 2003, and amounts above that are taxable.
What if I sign a settlement agreement and then regret it within a few days?
There’s no automatic right to change your mind. Once signed with both parties’ agreement, it’s binding. It can only be challenged on narrow grounds like duress or lack of independent legal advice.
Can the employer withdraw an offer to settle after proposing a settlement?
Yes, unless you’ve already accepted. Once accepted (verbally or in writing) there’s a binding contract. Move quickly to accept if a time limit is stated.
What is the 3-day rule for settlement agreements?
There’s no formal 3-day cooling-off period for settlement agreements (that rule is for some consumer contracts). Good practice is to allow time to digest your solicitor’s written advice and ask follow-up questions before signing.
Employment Law Guide
Settlement agreement vs COT3
Last updated: April 2026 · Content reviewed against current UK employment law
Ready to build your claim?
Start My Claim guides you from ET1 to hearing, step by step. Free to start, no jargon.
No credit card required · Used by claimants across the UK
What they have in common
Settlement agreements and COT3s (Conciliation Agreements) are both binding, legally enforceable settlements of employment disputes. They share key characteristics:
- Both are legally binding.
- Once signed, both parties are committed. Breaking the agreement typically results in a court/tribunal order to pay, or damages for breach.
- Both require genuine agreement.
- Neither party can be forced to settle against their will. If there is duress, misrepresentation, or lack of capacity, the agreement may be voidable.
- Both prevent future tribunal proceedings.
- Once an agreement is signed (whether settlement agreement or COT3), the claimant cannot bring the settled claims before the tribunal. This is the key purpose of both — to bring finality to disputes.
- Both can include confidentiality clauses.
- Settlement agreements typically include NDAs; COT3s can too, though it is less common.
- Both can include references and reputational protection.
- For example, the employer may agree to provide a reference saying you left by mutual agreement, or to not disclose the settlement amount.
Settlement agreement deep-dive
A settlement agreement (also called a compromise agreement or settlement contract) is a private contract negotiated between you and your employer (or their legal representatives) outside of any formal process. It is the traditional way to settle disputes.
The employer (or your solicitor, if you initiate settlement discussions) makes a settlement offer. Negotiations follow. Once both parties agree on the key terms (the payment amount, the confidentiality provisions, the reference, etc.), the agreement is drafted by the employer's solicitor (or yours). You must then obtain independent legal advice from your own solicitor before signing.
Independent legal advice requirement
This is the critical legal requirement. For a settlement agreement to be binding and to have the effect of preventing tribunal claims, you must have had
independent legal advice
from a solicitor (or other qualified adviser). This advice must cover:
- The terms of the agreement and what it means
- The claims being settled and those not covered
- Whether the settlement amount is reasonable
- Your rights and remedies if you do not settle
Without this advice, the agreement is invalid
and does not prevent you from pursuing claims. This is a built-in protection for claimants — if the employer tries to settle without giving you the opportunity to get advice, the agreement fails.
Employer contribution to legal fees
The employer typically pays for your legal advice. The standard amount is £200 to £500, which covers a solicitor's time to review and advise on a straightforward settlement agreement. This is often a fixed fee agreed upfront. Some employers refuse to contribute, or contribute less — you can negotiate this as part of the settlement package. If the employer refuses and you cannot afford a solicitor, you may be able to get free advice from Citizens Advice, ACAS, or a local law centre.
A settlement agreement typically includes:
- The settlement payment
- — the lump sum the employer will pay you
- Accrued pay, holiday, bonuses
- — any sums owed up to termination
- List of settled claims
- — which should include unfair dismissal, wrongful dismissal, discrimination, breach of contract, and any other claims you may have
- — restrictions on discussing the settlement or the reasons for termination
- — what the employer will say if you are asked for a reference, or agreement not to provide one
- — keys, equipment, documents to be returned
- — if you are still employed, or confirmation that you have already left
- — confirmation that the first £30,000 is tax-free (if it is)
COT3 (Conciliation Agreement) deep-dive
A COT3 is a settlement agreement drawn up and facilitated by
ACAS (Advisory, Conciliation and Arbitration Service)
. It is a formal tribunal document that records a settlement negotiated through ACAS conciliation.
How it works in practice
Once you submit an Employment Tribunal claim (ET1), ACAS is automatically notified. An ACAS conciliator then contacts both you and your employer to see if you want to settle. The conciliator acts as a neutral intermediary, shuttling offers back and forth, helping both sides understand each other's positions, and working toward settlement.
If an agreement is reached, ACAS draws up a
— a formal record of the settlement. Both you and the employer sign the COT3, and it is then a binding tribunal order. The claim is then withdrawn or dismissed.
No legal advice requirement
Unlike a settlement agreement, a COT3 does
not require you to have independent legal advice
in order for it to be binding. This is a key difference. ACAS will explain the terms to you, but they are neutral — they do not advise you on whether the settlement is a good deal.
However, it is still strongly advisable to seek legal advice before agreeing to a COT3, especially if it is settling all of your claims. Many solicitors will give a free initial review of a COT3 offer.
COT3s are often faster and cheaper than settlement agreements. Because ACAS is already involved and will facilitate conciliation for free, you can reach agreement quickly (sometimes within days). There is no legal fee involved unless you choose to instruct a solicitor to advise you.
A COT3 can settle specific claims or all claims. If the COT3 states "all claims", it will have broad effect. If it specifies only certain claims (e.g., "the claim of unfair dismissal only"), then other claims (e.g., a discrimination claim) might still be available. Always read the COT3 carefully to see exactly which claims are being settled.
Protected conversations (section 111A)
There is a third, less common route to settlement:
protected conversations
under section 111A of the Employment Rights Act 1996. This is relevant to settlement agreements.
Section 111A allows an employer to propose a settlement to an employee
without a pre-existing dispute
(e.g., before a claim is even threatened), and the proposal is "protected" — the employee cannot later use the fact that the employer made the offer as evidence in an unfair dismissal claim.
Example: An employer wants to make redundancies. Before announcing redundancy, the employer offers a settlement agreement to selected employees. If an employee rejects the offer and is made redundant unfairly, the employee cannot argue "they offered me a settlement, which proves they had decided to dismiss me unfairly". The offer itself is protected from evidence.
However, section 111A only protects unfair dismissal claims. It does not protect discrimination claims. So the employer can make a protected conversation under 111A, but if the dismissal is for a discriminatory reason, the protection does not apply, and the employee can still bring a discrimination claim.
Side-by-Side Comparison
| Feature | Settlement Agreement | COT3 |
|---|---|---|
| How created | Direct negotiation, usually through solicitors | Through ACAS conciliation |
| Independent legal advice required | Yes — agreement invalid without it | No — not legally required |
| Employer contribution to fees | Usually £200–£500 (standard) | N/A — no fee |
| Confidentiality | Usually includes NDA/confidentiality clause | Can include confidentiality, less common |
| Speed | Days to weeks to negotiate | Can be agreed quickly via ACAS |
| What claims it settles | All claims (if drafted correctly) | Specific claims as agreed |
| Enforceability | Contract — enforce in county court | Tribunal order — enforce via tribunal |
| Tax treatment | Negotiated — first £30k usually tax-free | Same tax treatment applies |
Which should you prefer?
Choose a settlement agreement if:
- The employer offers one early (before a claim is filed or threatened), because you get the benefit of independent legal advice and you are not locked into ACAS's timeline.
- You want detailed drafting covering specific issues (e.g., a specific reference, return of data, carve-outs for specific claims).
- You want the protection of having independent legal advice formally recorded (this protects you if the employer later disputes whether the agreement was properly made).
- A claim has already been filed and you are in ACAS conciliation. Moving toward a COT3 is the natural path.
- You want to settle quickly without involving solicitors (and without incurring legal costs), and you are confident in the deal's fairness.
- The ACAS conciliator is brokering a good offer and you trust ACAS to explain the terms clearly.
Questions people ask
You don’t have to figure this out alone
Start My Claim builds your ET1, organises your evidence, and guides you step by step to your hearing.
No credit card · Cancel any time · Used by claimants across the UK
Your claim, estimated
What could you actually be owed?
No sign-up, no card, no email. Your numbers just appear below as you type — then you decide whether to build the full case.