Employment Termination Documents UK: Full Guide

At a glance

• Statutory minimum notice (employer to employee): one week after one month's service, rising to one week per complete year of service, up to a maximum of twelve weeks at twelve years' service — Employment Rights Act 1996, s.86.
• Statutory minimum notice (employee to employer): one week, once the employee has one month's service — s.86(2) ERA 1996. Either side can waive notice or accept pay in lieu — s.86(3).
• Written statement of particulars: every worker is entitled to a written statement setting out core terms, which must now be given no later than the day employment begins — s.1 ERA 1996, as amended from 6 April 2020.
• Qualifying period for unfair dismissal (current): two years' continuous service — s.108 ERA 1996. This is due to fall to six months from 1 January 2027 under the Employment Rights Act 2025.
• Time limit to bring an unfair dismissal claim: three months less one day from the effective date of termination, subject to a short extension for Acas early conciliation — s.111 ERA 1996.
• Redundancy: a dismissal is by reason of redundancy where the employer's need for employees of that kind, or at that place, has ceased or diminished, or the business itself has ceased — s.139 ERA 1996.
• Settlement agreements: only valid to waive statutory employment rights if the employee has received independent legal advice from an adviser covered by professional indemnity insurance, and the agreement is in writing and relates to the specific claims — s.203(3) ERA 1996.

What are employment termination documents?

Termination and resignation documents are the written instruments that formally mark the end of a working relationship in the UK. They exist to confirm what has been agreed, record the reason for the departure, and set out practical details such as notice, final pay, outstanding holiday, and the return of company property.

On the resignation side, the usual sequence is a resignation letter from the employee followed by a written acknowledgement from the employer. On the termination side, the central document is a termination letter issued by the employer, often preceded by warnings, performance records, or a redundancy consultation process depending on the reason for dismissal.

Around these core papers sit supporting documents: exit interview forms, reference requests, settlement agreements, and final payslips. None of these change the underlying legal position on their own — the legal position comes from the Employment Rights Act 1996 and the facts of what actually happened — but together they form the evidence trail that shows an exit was handled properly. Without that trail, disputes are harder to resolve and tribunal claims easier to bring.

Statutory notice periods under the Employment Rights Act 1996

Section 86 ERA 1996 sets the statutory floor for notice. It applies once an employee has one month's continuous service.

Employer to employee (s.86(1)):

| Length of continuous service | Minimum notice from employer | |---|---| | Less than 2 years | 1 week | | 2 years or more, less than 12 years | 1 week per complete year of service | | 12 years or more | 12 weeks |

Employee to employer (s.86(2)): a flat minimum of one week, regardless of length of service, once the employee has one month's service.

A contract cannot lawfully set notice below these statutory minimums, but it can set longer notice — and where it does, the longer period (statutory or contractual, whichever is greater) governs. Always check the written statement of particulars or the contract itself, not just the statutory floor.

Payment in lieu of notice and waiving notice

Section 86(3) ERA 1996 makes clear this section does not stop either party waiving their right to notice on a particular occasion, or accepting a payment in lieu of notice (PILON) instead of working it. Section 86(6) also preserves each side's right to treat the contract as terminable without notice where the other party's conduct would otherwise justify summary dismissal — the statutory minimum notice provisions do not override the common law position on gross misconduct.

Resignation: what documents are needed

1. Resignation letter. A short, dated letter stating the intention to leave and the last working day is legally sufficient — the employee does not need to give a reason. Verbal resignations can be valid, but a written one avoids later disputes about what was said and when notice started.
2. Acknowledgement letter. The employer is not legally required to accept a resignation for it to take effect (it is a unilateral act by the employee), but a written acknowledgement confirming the leaving date, notice arrangements, and final-pay position is standard good practice and reduces the risk of a later dispute.
3. Handover and return-of-property arrangements. Not a statutory requirement, but practically important — set out clearly in the acknowledgement letter or a short separate note.

Employer-led termination: what documents are needed

An employer-led termination needs more paperwork than a resignation, because the employer carries the burden of showing the dismissal was for a fair reason and handled fairly.

Dismissal for a potentially fair reason

Section 98(1)–(2) ERA 1996 puts the burden on the employer to show the reason for dismissal, and that it falls within one of the potentially fair categories:

• Capability or qualifications — s.98(2)(a), defined in s.98(3) as skill, aptitude, health, or another physical or mental quality relevant to the work, or a relevant academic, technical, or professional qualification.
• Conduct — s.98(2)(b).
• Redundancy — s.98(2)(c) (see below).
• Statutory illegality — s.98(2)(d), where continuing to employ the person would mean contravening a legal duty or restriction (for example, a driver losing the licence their role legally requires).
• Some other substantial reason (SOSR) — s.98(1)(b), a residual category for a reason of a kind capable of justifying dismissal from that particular role, not otherwise captured above.

The reasonableness test

A potentially fair reason is not the end of the analysis. Section 98(4) ERA 1996 requires a tribunal to decide whether, in the circumstances (including the size and administrative resources of the employer), the employer acted reasonably in treating that reason as sufficient to dismiss — judged "in accordance with equity and the substantial merits of the case." In practice this is where most disputes are fought: was there a fair process, a genuine investigation, a chance to respond, and a proportionate outcome. The termination letter and any preceding disciplinary or performance records are the primary evidence a tribunal will look at, so they need to match what actually happened.

Redundancy documents and consultation

Section 139 ERA 1996 defines redundancy as a dismissal wholly or mainly attributable to either:

• the employer ceasing, or intending to cease, the business (or the business at the place the employee worked), or
• the employer's requirement for employees to do work of a particular kind — at that place — having ceased or diminished, or being expected to.

"Cease" and "diminish" can be permanent or temporary, for whatever reason. Redundancy is a potentially fair reason under s.98(2)(c), but genuine redundancy alone does not make a dismissal fair — a fair process still has to be followed: a warning that redundancies are being considered, meaningful consultation, a fair and objective selection method where more than one role is at risk, and consideration of suitable alternative employment. Documents that evidence this process — the "at risk" letter, consultation meeting notes, the selection matrix, and the final redundancy confirmation letter — are what a tribunal will look for if the redundancy is later challenged. See GOV.UK: redundancy — your rights for the statutory redundancy pay position, which sits alongside (and is separate from) the fairness question addressed here.

Settlement agreements: the independent adviser requirement

A settlement agreement is a legally binding contract, most often used to end employment on agreed terms, under which the employee agrees not to pursue specified claims against the employer — typically in exchange for a payment.

Section 203(1) ERA 1996 makes any contract term void to the extent it tries to exclude or limit an employee's statutory rights or stop them bringing a tribunal claim. Settlement agreements are a specific, tightly controlled exception. Under s.203(3), a settlement agreement only escapes that general prohibition where:

• the agreement is in writing;
• it relates to the particular complaint or proceedings;
• the employee has received advice from a relevant independent adviser on the terms and effect of the agreement — including specifically its effect on their ability to pursue a claim before an employment tribunal;
• the adviser is covered by a contract of insurance, or an indemnity provided for members of a profession or professional body, against the risk of a claim by the employee arising from that advice; and
• the agreement identifies the adviser.

If these conditions are not met, the waiver of statutory rights in the agreement is not effective — the void-ing effect of s.203(1) is not lifted. This is why a genuine settlement agreement always requires the employee to take independent advice, usually from a solicitor, and it is common (though not required by statute) for the employer to contribute a fixed sum towards that advice.

The written statement of employment particulars

Section 1 ERA 1996 entitles a worker to a written statement of the main terms of their employment. Since the amendments that took effect on 6 April 2020, this must be given no later than the day employment begins, and the right extends to workers as well as employees (though some particulars, such as the continuous employment start date, remain employee-specific).

The statement must cover, among other things: the parties' names, the start date, pay and how it is calculated, pay intervals, hours of work, holiday entitlement, sick pay, other paid leave, pension arrangements, notice periods, job title, whether the role is permanent or fixed-term, any probationary period, place of work, and details of any required training.

This document matters at termination for a simple reason: it is usually the primary evidence of the contractual notice period, holiday entitlement, and other terms that a termination or resignation must be measured against.

Time limits: how long you have to bring a claim

Under section 111 ERA 1996, a tribunal will not normally consider an unfair dismissal complaint unless it is presented within three months beginning with the effective date of termination — in practice, calculated as three months less one day from the last day of employment. A tribunal can extend this where it was not "reasonably practicable" to present the claim in time, but this is a narrow exception, not a general discretion. Acas early conciliation, which is a compulsory first step before most tribunal claims, pauses (or "stops the clock" on) this time limit while conciliation is attempted.

Coming change: qualifying period cutting to six months from January 2027

The Employment Rights Act 2025 received Royal Assent on 18 December 2025. Among its changes, it reduces the qualifying period for the general right not to be unfairly dismissed under s.94 ERA 1996 — currently two years under s.108 — to six months. The government has set out its intention to implement this change from 1 January 2027; an earlier proposal to make unfair dismissal a "day one" right without any qualifying period was dropped before the Act passed. The Act also removes the existing statutory cap on unfair dismissal compensatory awards. See GOV.UK / business.gov.uk: unfair dismissal rights for the government's own summary.

Until 1 January 2027, the current two-year qualifying period under s.108 ERA 1996 remains the law — do not assume the new six-month period applies to a dismissal happening now. Employers reviewing probationary and early-service dismissal processes should treat this as a fixed, known date to plan around, not a future possibility.

Practical checklist: documents to issue when someone leaves

1. Written notice or resignation letter, stating the effective date and the notice period being applied.
2. Acknowledgement or termination letter, confirming the last working day, how notice is being handled (worked, garden leave, or paid in lieu), outstanding holiday pay, and arrangements for returning company property.
3. Evidence of process, where the departure follows disciplinary, performance, or redundancy proceedings — warnings, meeting notes, consultation records, and (for redundancy) the selection criteria used.
4. Settlement agreement, only where one is being used, with the independent-adviser conditions in s.203(3) ERA 1996 satisfied before it is signed.
5. Final payslip, showing any accrued but untaken holiday pay, and the P45 issued after the final pay run.
6. Reference response, handled in line with company policy, and pension/benefits information forwarded to the relevant scheme.
7. Secure record-keeping, retaining the employment file for a reasonable period in line with data protection and tax obligations.

Common mistakes to avoid

• Using notice below the statutory minimum. Even where a contract is silent or sets a shorter period, s.86 ERA 1996 sets the floor — an employer cannot contract out of it.
• Letting the termination letter drift from the process that preceded it. If the letter states a different reason, or omits facts, from the disciplinary or redundancy process actually followed, that mismatch is a common route to an unfair dismissal finding under s.98(4).
• Treating a settlement agreement as binding without independent advice. Without the adviser conditions in s.203(3) being met, the waiver of statutory rights in the agreement will not be effective.
• Assuming redundancy alone makes a dismissal fair. A genuine redundancy situation under s.139 still needs a fair process — consultation and fair selection — for the resulting dismissal to be fair under s.98(4).
• Missing the tribunal time limit. Three months less one day from the effective date of termination, under s.111, is a hard deadline subject only to a narrow "not reasonably practicable" extension — do not rely on it being extended as a matter of course.
• Applying the current two-year unfair dismissal qualifying period after 1 January 2027. Once the Employment Rights Act 2025 change takes effect, the threshold falls to six months' service.

This guide provides general information about UK employment termination documents and does not constitute legal advice. It is not a substitute for advice tailored to your specific circumstances — if you are dealing with a dismissal, resignation, or settlement agreement and want to understand your options, a call with an experienced legal adviser can help you work out the right next step.

Last reviewed: August 2026 by a non-practising solicitor · Next review due: August 2027 or on legislative change (including the 1 January 2027 unfair dismissal qualifying-period change under the Employment Rights Act 2025).