Extending Redundancy Notice Periods in the UK: Employer Guide

If you’re running a small business, redundancy is one of those situations you hope you’ll never need to deal with - but if trading conditions change, you may not have much choice.

Even where redundancy is genuine and unavoidable, the detail that often trips employers up is timing. In particular, you might find yourself needing to extend a redundancy notice period because projects change, a handover needs longer than expected, an employee goes off sick, or you’re still exploring alternatives to redundancy.

The good news is that extending redundancy notice can be done in a fair and legally sensible way. The key is to understand what redundancy notice actually is, how it interacts with statutory rules, and how to document any extension properly so you don’t create unintended risk (like a breach of contract or an unfair dismissal claim).

What Is Redundancy Notice (And Why Would You Extend It)?

In a redundancy situation, “notice” is the period between you giving an employee notice of dismissal and their employment actually ending.

That notice period usually comes from one (or both) of these sources:

• Statutory notice (minimum notice under the Employment Rights Act 1996); and/or
• Contractual notice (the notice period written into the employment contract).

An extension of redundancy notice is where you and the employee agree (or you use a clear contractual mechanism, if one exists) to move the termination date back, so employment continues for longer than originally planned.

Employers often extend redundancy notice where:

• You need extra time for a handover or to finish key work.
• You’re still consulting or working through redeployment options.
• The employee is on sick leave and you want to handle the process carefully.
• The employee asks for more time for practical reasons (for example, to secure a new role).
• Your business circumstances change and you want to pause, reduce, or reverse redundancies.

Extending notice can be a sensible, human approach - but it needs to be structured properly to avoid confusion about pay, benefits, holiday, and redundancy payments.

When Is An Extension Of Redundancy Notice Allowed Under UK Law?

In most cases, there’s nothing inherently unlawful about extending a redundancy notice period. The issue is how it’s done and whether it creates knock-on legal consequences.

1) You Usually Need Agreement (Because It Changes The Contract)

If you have already issued notice and you now want to extend the employee’s termination date, you’re effectively changing a key term: the end date of the employment relationship.

Unless the employment contract gives you a clear right to do this (which is uncommon), the safest approach is to obtain the employee’s written agreement.

This is one reason it’s worth having a clear, up-to-date Employment Contract in place - it helps you manage notice, termination, and pay issues with less ambiguity when things are moving quickly.

2) You Must Still Follow A Fair Redundancy Process

An extension doesn’t remove your obligation to run a fair process. If the redundancy dismissal itself is unfair (for example, the selection criteria are unreasonable or consultation wasn’t meaningful), a longer notice period won’t “fix” that.

At a high level, a fair redundancy process usually includes:

• a genuine redundancy situation;
• meaningful consultation (individual and/or collective, depending on numbers);
• fair selection criteria and a fair selection process;
• consideration of suitable alternative roles; and
• clear communication and correct notice/termination paperwork.

If you want support to keep the process on track, it can help to get advice early (especially where you’re juggling multiple roles as a small business owner). A dedicated Redundancy Advice service can be particularly useful where timing changes mid-process.

3) Be Careful If Your Extension Changes Redundancy Pay Or Notice Entitlements

Extending redundancy notice can affect calculations - for example:

• Statutory redundancy pay (which depends on age, weekly pay (capped), and length of service);
• notice pay and whether it’s worked or paid in lieu (PILON);
• holiday accrual and holiday pay; and
• continuous service (which can affect eligibility for certain rights).

In practice, an extension can sometimes increase an employee’s length of service in a way that changes entitlements - for example, taking them over the two-year qualifying period for statutory redundancy pay (and, separately, ordinary unfair dismissal protection in most cases). That isn’t necessarily a reason not to extend - but it is a reason to do the sums before you agree.

How To Extend Redundancy Notice Properly (A Practical Employer Checklist)

When you’re under pressure, it’s tempting to confirm the new end date on a quick call and move on. But redundancy is one area where “quick and informal” can come back to bite you later.

Here’s a practical checklist to help you extend redundancy notice in a controlled way.

1) Confirm What Notice Period Applies

Start by checking:

• the employee’s contractual notice period; and
• the statutory minimum notice period.

You must give at least the statutory minimum, but many employment contracts give more.

If you need a refresher on how notice works in redundancy situations (and how it’s counted), it’s worth reviewing redundancy notice periods to sense-check your timeline.

2) Decide What “Extension” Actually Means In Your Business

Extensions can look different depending on what you’re trying to achieve. For example:

• Extension to complete handover (employee continues working as normal to a later date).
• Extension while exploring alternatives (you’re effectively delaying termination while consultation/redeployment continues).
• Extension with reduced duties (for example, scaling down responsibilities or hours during the extra period).

If duties, hours, or reporting lines are changing, that can be more than a simple extension - it can become a variation of terms. Document it clearly.

3) Put The Extension In Writing (With The Specific Date)

Your written confirmation should be unambiguous. At minimum, include:

• the original notice date and original termination date;
• the new termination date (the extension end date);
• whether the redundancy dismissal notice is being varied (extended) or whether notice is being withdrawn;
• what happens to pay, benefits, and holiday during the extended period; and
• any changes to duties, working hours, or location.

If you’re extending because you’re still looking at alternatives, make that explicit so the employee understands the redundancy outcome hasn’t changed unless you confirm it has.

4) Align Your Payroll And HR Records

Make sure your internal systems reflect the updated end date. This helps prevent common errors like:

• final pay being processed too early;
• benefits being cut off mid-extension; and
• holiday not accruing properly.

If you have a Staff Handbook, check whether it includes any relevant guidance on notice, time off, handovers, or payroll cut-offs - and follow it consistently.

5) Keep Consultation And Communication Consistent

One practical risk with an extension of redundancy notice is mixed messaging - especially if different managers are speaking to the employee.

Try to keep your messaging consistent:

• If redundancy is still going ahead, say so (clearly and kindly).
• If you’re actively looking at redeployment, set expectations about timeframes and what roles (if any) might be available.
• If circumstances change and you might withdraw redundancy, confirm that in writing too.

Common Scenarios: Sick Leave, Annual Leave, And Alternative Roles During The Extension

Small businesses often ask the same question: “We’re fine to extend notice - but what happens if something else happens during the extension?”

Here are some of the most common scenarios.

If The Employee Goes Off Sick During The Extended Notice Period

An employee can be off sick during a notice period, including a redundancy notice period. If the employee is absent due to illness, you’ll need to consider:

• whether they are entitled to Statutory Sick Pay (SSP) and/or contractual sick pay;
• how you’ll handle the handover if they’re not working; and
• whether it’s appropriate to adjust the extension or duties.

Where sickness absence becomes more complex, it’s important to follow a fair, documented approach. Many employers find it helpful to align decisions with their broader approach to managing sick leave, so they don’t create inconsistent outcomes across the team.

If The Employee Takes Annual Leave During The Extension

Holiday continues to accrue during notice, and employees may request annual leave (or you may require them to take it, provided you follow the correct notice rules for requiring holiday).

From an employer perspective, the key is to plan ahead. If your main reason for extending redundancy notice is to complete a handover, but the employee uses much of the extension as annual leave, you may not get the outcome you expected.

You can manage this by agreeing:

• key handover dates;
• what work needs to be completed before leave is taken; and
• whether any untaken leave will be paid out on termination.

If You’re Offering A Suitable Alternative Role

Sometimes extending redundancy notice is used as breathing space to assess whether an employee can move into an alternative role.

If a suitable alternative role is genuinely available, and the employee accepts, you may end up avoiding redundancy altogether. If the employee rejects an offer of suitable alternative employment, there can be implications for redundancy pay depending on the circumstances - so it’s worth taking advice before you assume the outcome.

Make sure any offer is clear on:

• job title and duties;
• pay and hours;
• location (and any travel requirements);
• start date; and
• whether there is a statutory trial period (where applicable).

What Are The Risks If You Extend Redundancy Notice The Wrong Way?

Handled well, an extension can help you manage change smoothly and reduce stress for everyone involved.

Handled poorly, it can create real legal and commercial risk - especially for small businesses where one dispute can be costly and time-consuming.

Common risks include:

Unintended Contract Changes And “Agreement” Disputes

If the extension is not clearly agreed (and documented), the employee may later dispute what was agreed - for example, claiming you promised to cancel redundancy or that their role would continue.

Unfair Dismissal Process Issues

If the underlying redundancy process is flawed, an extension of redundancy notice won’t fix that. In some cases, it can even make the timeline look more confusing if records aren’t clear.

Incorrect Pay Or Holiday Calculations

Extending the end date can change payroll calculations and holiday accrual. If final pay is wrong, you risk wage claims and reputational damage - neither of which you want when you’re already managing restructuring.

Knock-On Performance Or Capability Issues

Sometimes redundancy overlaps with performance concerns (for example, a role is being reduced, but there are also performance issues in the background). Be careful not to “blend” the two processes informally.

If performance management is genuinely part of the picture, a structured process like Performance Improvement Plans may be more appropriate in other contexts - but redundancy decisions must still be based on role requirements and business need, not as a shortcut for performance management.

Key Takeaways

• Extending redundancy notice is usually lawful, but it should be clearly documented because it changes the practical end date of employment.
• In most cases, the safest approach is to obtain the employee’s written agreement to the extension and to confirm what happens to pay, benefits, and holiday during the extended period.
• Extending notice doesn’t remove your obligation to run a fair redundancy process (genuine redundancy, consultation, fair selection, and consideration of alternatives).
• Be careful about knock-on effects like statutory redundancy pay calculations, continuous service (including whether the employee reaches 2 years’ service), and holiday accrual when you move the termination date.
• If the extension is linked to sick leave, annual leave, or redeployment discussions, keep communication consistent and your records tidy to reduce legal risk.
• When in doubt, get advice early - small timing decisions during redundancy can have big legal consequences later.

If you’d like help managing a redundancy process or documenting an extension of redundancy notice properly, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.