Settlement Agreements Explained for UK Employers (2025)

The grown-up way to part company without a war: settlement agreements explained

Sometimes an employment relationship needs to end, and both sides quietly know it. That is where a settlement agreement earns its place. The senior hire who is the wrong fit. The long-running tension no process will fix. You could grind through a formal procedure and hope it lands cleanly, or you could agree a dignified, certain exit that closes the door on claims and lets everyone move on.

That second route is a settlement agreement, and for small businesses it can be one of the most useful tools in the box, as long as you understand how it works.

It is also one of the easiest to get wrong, because strict rules decide whether the agreement is worth the paper it is written on. This guide covers what a settlement agreement is, when to use one, how the conversation is protected, what goes inside, and the tax position you must check.

Hazel, our Chief Wellbeing Officer, has never knowingly signed anything, on principle. For everyone else, the small print matters.

Quick Answer Box

• Do this: use a settlement agreement when both sides want a clean, agreed exit, give at least 10 calendar days to consider, make sure the employee gets independent legal advice, and put everything in writing.
• Avoid this: pressuring someone into signing, skipping the legal advice, or treating a settlement as a shortcut around a fair process you are legally required to follow.
• Write down: the proposed terms, the payments and what each is for, the claims being waived, the reference wording, and the confidentiality terms.

What is a settlement agreement?

A settlement agreement is a legally binding contract between you and an employee, usually used when employment is ending, in which the employee agrees to waive the right to bring specified legal claims against you in return for an agreed payment or other terms.

If the word "compromise agreement" is rattling around in your memory, that is the same thing under its old name. It was renamed "settlement agreement" in 2013.

The attraction for an employer is certainty. Once the agreement is validly signed, the employee cannot later bring the claims they have given up. You buy a clear line under the relationship, and in return the employee usually receives a payment and other terms that make the exit worthwhile for them too.

When should you use one?

Settlement agreements are not for every exit. They earn their place in situations such as:

• A sensitive departure where a formal process would be drawn out, painful, or risky for both sides.
• A dispute that is heading for a grievance or a tribunal, where an agreed settlement is cleaner and cheaper than a fight.
• A redundancy where you want extra certainty beyond the standard process, or want to offer enhanced terms in exchange for a waiver of claims.
• A long-running performance or relationship issue where both sides would genuinely prefer to part ways by agreement.

A settlement agreement is not a way to dodge a process you are legally required to run. If a fair procedure is needed, a settlement is an alternative route that both sides choose to take, not a trapdoor that lets you skip the fairness.

How protected conversations and "without prejudice" work

To agree an exit, you usually have to raise the subject. The obvious worry is: what if you suggest it, they say no, and then use your approach as evidence that you had already decided to get rid of them? Two principles help here, and they are not the same thing.

Pre-termination negotiations (the protected conversation)

Under section 111A of the Employment Rights Act 1996, an employer can have a pre-termination negotiation, often called a protected conversation, about an agreed exit, and that conversation generally cannot be used against the employer in an ordinary unfair dismissal claim.

It is not a magic shield. The protection falls away if there is improper behaviour, such as bullying or undue pressure to sign. And it only covers ordinary unfair dismissal. It does not protect you in claims such as discrimination, whistleblowing or automatic unfair dismissal. So the protected conversation buys you room to talk, not a licence to behave badly.

Best practice tips:

• Offer at least 10 calendar days for the employee to consider the proposal.
• Keep notes, mark them "protected conversation", and stick to facts and options.
• Avoid threats or ultimatums.

The "without prejudice" rule

Separately, the "without prejudice" rule means that genuine attempts to settle an existing dispute usually cannot be put before a tribunal. The key difference from section 111A is that "without prejudice" needs an actual dispute already to exist. The protected conversation under section 111A does not, which is why it is useful for opening a conversation before any dispute has crystallised.

In plain terms: section 111A lets you start the conversation; "without prejudice" protects settlement discussions once there is a dispute on the table. Get advice on which applies before you speak, because labelling an email "without prejudice" does not automatically make it so. Add "subject to contract" so no one thinks the deal is final until the agreement is signed.

What makes a settlement agreement legally valid?

This is the part you cannot afford to fudge. A settlement agreement only works if it meets the statutory conditions. In broad terms, it must:

• Be in writing.
• Relate to particular complaints or proceedings, not be a vague waiver of "any and all claims" in the abstract.
• Be signed by the employee only after they have received advice from a relevant independent adviser, usually a solicitor, on the terms and effect of the agreement and, in particular, its effect on their ability to bring claims.
• Identify that adviser in the agreement, and the adviser must have appropriate professional indemnity insurance.
• Confirm that the statutory conditions for that type of agreement have been met.

That requirement for independent advice is non-negotiable, and it is there to protect the employee, which in turn protects you: without it, the waiver is not effective. By long-standing custom, the employer contributes towards the cost of that advice, often a set amount. ACAS has helpful guidance on settlement agreements that is worth reading alongside this.

Practical extras to include:

• A clear offer letter setting out headline terms, marked "without prejudice" or "protected" as appropriate, and "subject to contract".
• A reasonable deadline for consideration and a named contact for questions.
• Space for the adviser's details and certificate wording.

What goes inside the agreement?

The detail varies, but most settlement agreements cover:

• The payments. What is being paid, and importantly what each element is for. Typically a mix of contractual sums, such as notice pay and accrued holiday, and a compensation payment for loss of employment.
• The claims being waived. The specific claims the employee is giving up, listed out rather than left vague.
• A reference. Often an agreed reference wording is attached, so both sides know exactly what will be said to a future employer.
• Confidentiality. What can and cannot be said about the agreement and the circumstances, on both sides. Note there are limits; confidentiality cannot be used to gag genuine whistleblowing or reports to regulators.
• Other terms. Things like the return of company property, ongoing obligations, and sometimes an agreed announcement to colleagues.
• Repayment or clawback. Limited to clear, fair triggers, such as a breach of confidentiality or a proven misrepresentation.

The tax position, and why you must check the figure

Here is where a lot of employers reach for a number they half-remember and get it wrong.

Genuine compensation for the loss of employment can be paid free of tax up to a set threshold, with the balance taxable. But not everything in a settlement is "compensation for loss of employment". Pay in lieu of notice, accrued holiday and other contractual sums are generally taxable in the normal way, regardless of how the agreement is worded. HMRC's Post-Employment Notice Pay rules mean most notice amounts are taxed as earnings.

The threshold and the rules on what is and is not taxable do change, and HMRC takes a close interest in how payments are described. So this is a flag, not a figure: do not lift a number from a blog, including this one. Check the current position on gov.uk's guidance on tax on termination payments and take advice before you commit to specific sums.

Common mistakes employers make

• Skipping or rushing the independent advice. Without valid advice, the waiver fails and you have paid out without buying certainty.
• Applying pressure. Heavy-handed tactics can amount to improper behaviour, stripping away the section 111A protection.
• Vague payment descriptions. If the agreement does not say what each payment is for, you create tax and enforceability headaches.
• Assuming the tax-free figure. Quoting a remembered threshold without checking is a classic, avoidable error.
• Using it to avoid a required process. A settlement does not cure an unlawful act; discrimination and whistleblowing protections survive.
• Forgetting the reference. Leaving reference wording unagreed often causes the next argument, weeks later.

What to write down

Even though the formal agreement is drafted by lawyers, keep your own clear record of:

• The proposed terms and any negotiation, ideally on a protected or "without prejudice" basis where appropriate.
• The breakdown of payments and what each element represents.
• The specific claims being waived.
• The agreed reference wording.
• Confidentiality and any carve-outs.
• Confirmation that the employee received independent legal advice and who from.

A short example opening line for a protected conversation

How you open the conversation matters. Something measured like this sets the right tone:

> "I would like to have a confidential, off-the-record conversation with you about your role and how things are going. Nothing is decided, and you do not have to respond today, but I want to be open about exploring whether an agreed way forward might suit us both. If we did go down that route, you would be able to take independent legal advice before deciding anything."

No pressure, no ambush, and a clear signal that the employee will get proper advice. That is how you keep the conversation protected and the relationship dignified.

Where to get this right

Settlement agreements sit where HR and the law meet, and the cost of a misstep is high, so this is one to get advice on rather than improvise. Our HR Advice Line is exactly where employers talk through if a settlement is the right move and how to open the conversation safely, and our HR Protect service keeps your wider policies and contracts in good shape so an exit is clean when it comes.

If you are not sure a settlement, a formal process, or something else fits your situation, an HR Health Check is a good place to start, or book a discovery call and we will help you weigh it up. And if the underlying issue is conduct rather than a parting of the ways, our guide to running a fair disciplinary procedure may be the better first read.

A settlement agreement, used well, lets two sides part on adult terms with certainty on both sides. Used carelessly, it costs money and buys nothing. The difference is in the process.