How To Pool Employees For Redundancy Selection And Reduce Legal Risk

Redundancies are never easy. For small businesses, they can feel especially personal - and the process can move quickly when cashflow is tight or trading conditions change.

But if you’re reducing headcount, you can’t just pick “who goes” based on instinct or convenience. One of the biggest legal risk areas is choosing the redundancy selection pool - deciding which employees are placed “at risk” and considered for redundancy.

Get the pool wrong (or fail to properly explain it), and you can quickly end up dealing with unfair dismissal claims, discrimination allegations, or an expensive settlement conversation you didn’t plan for.

This guide breaks down redundancy pooling in the UK from a small business perspective - what it is, how to pick the right pool, how to score fairly, and what practical steps reduce legal risk.

Note: This article is general information only and is not legal advice. If you need help with a specific redundancy situation, it’s best to get tailored advice.

What Is Redundancy Pooling (And Why It Matters For Small Businesses)?

Redundancy pooling is the process of identifying which employees are in the “selection pool” for redundancy.

In plain terms, it answers questions like:

• Which roles are genuinely reducing or disappearing?
• Which employees do we need to compare against each other?
• Who should be “at risk” and included in consultation and scoring?

This matters because even if your business has a genuine redundancy situation (for example, a drop in work or a restructure), an employee can still claim unfair dismissal if you don’t follow a fair process.

Pooling is often where disputes start. If an employee believes:

• they should not have been in the pool (because their role wasn’t affected), or
• someone else should have been in the pool (because their role is similar),

they may argue the redundancy was effectively targeted at them - which creates legal risk.

For small businesses, the challenge is that teams are often lean and job titles don’t always match what people do day-to-day. That makes it even more important to define roles clearly (and document your thinking).

When Do You Need A Redundancy Selection Pool?

You typically need a redundancy pool when you have more than one employee doing the same or similar work, and you’re reducing the number of roles (rather than removing the role entirely).

Common examples include:

• You have 5 customer service staff, but only need 3 going forward.
• You have 2 site managers, and you’re consolidating to 1 site.
• You’re merging two teams and removing duplicated roles.

On the other hand, if a role is genuinely unique and disappearing completely, you might have a “pool of one” (meaning only that role-holder is at risk). That can be lawful, but it’s also more likely to be challenged - so you’ll want to be particularly careful with your rationale and consultation notes.

Also keep in mind: redundancy isn’t the same as performance management. If the real issue is underperformance, you generally shouldn’t “solve” it via redundancy. A better route is a fair capability process - many businesses use PIPs (Performance Improvement Plans) when performance is the core problem.

How To Choose The Right Pool For Redundancy (A Practical Approach)

There’s no single “correct” pool that applies to every business. The legal test is usually about whether your pooling decision falls within the range of reasonable responses for an employer in your situation.

That said, there are practical steps you can take to make your redundancy pooling decision more defensible.

1) Start With The Business Reason For Redundancy

Be specific about what has changed. For example:

• A particular contract has ended.
• Sales have reduced in a specific product line.
• Work is being automated.
• You’re restructuring to remove management layers.

Then link that change to the roles affected. If you can’t clearly explain why the role count is reducing, it’s harder to justify the pool.

2) Look At The Work, Not Just Job Titles

In small businesses, job titles can be misleading. Two people called “Operations Coordinator” may do very different things, while someone called “Office Manager” may do 60% HR admin and 40% finance.

When deciding redundancy pooling, focus on:

• day-to-day duties
• skills and qualifications required
• who can cover which tasks
• how interchangeable roles really are

A useful question is: could we reasonably move work between these employees without major retraining? If yes, they may need to be in the same pool.

3) Consider “Bumping” (Even If You Decide Not To Do It)

“Bumping” is where you make an employee redundant from one role, but offer them another role currently done by someone else (who could then be made redundant instead).

You’re not automatically required to do bumping, but it can come up in challenges. At a minimum, consider whether bumping is relevant and document why you did or didn’t do it.

4) Document Your Pooling Rationale Early

If you ever need to defend your redundancy process, you’ll want clear records showing how you chose the pool and why.

Keep a short written rationale covering:

• the business reason for redundancy
• the roles affected
• why certain employees were included or excluded
• how you assessed similarity/interchangeability

This is also helpful for consistency, especially if more than one manager is involved.

5) Watch Out For Hidden Discrimination Risks

Pooling decisions can accidentally create discrimination issues under the Equality Act 2010. This often happens when a pool (or scoring criteria) disproportionately affects people with protected characteristics, such as:

• age
• sex
• disability
• pregnancy/maternity
• race
• religion/belief

Example: if you narrowly pool only “part-time administrators” and most part-time staff are women due to childcare arrangements, you’ve created a higher discrimination risk - even if that wasn’t your intention.

This doesn’t mean you can’t proceed. It means you should double-check whether the pool definition is genuinely role-based and defensible, and whether alternatives were considered.

How To Use Fair Selection Criteria After You’ve Set The Pool

Once redundancy pooling is set, you usually move to selection - deciding who is actually made redundant from within the pool.

This is where “fairness” lives or dies. You want criteria that are objective, measurable, and relevant to the future needs of the business.

Common (generally safer) criteria include:

• skills and qualifications relevant to the future structure
• performance history (supported by records)
• disciplinary record (where appropriately documented)
• attendance record (handled carefully, especially around disability and pregnancy)

Many businesses use a scoring matrix to keep this structured and consistent. If you’re building one, a redundancy scoring matrix is often the clearest way to show how decisions were reached.

Criteria To Treat With Caution

Some criteria can be used, but are common sources of claims if applied carelessly:

• Attendance: you may need to discount disability-related absences and pregnancy-related absence to reduce discrimination risk.
• Flexibility: if “flexibility” indirectly penalises staff with childcare responsibilities or disabilities, you should define it carefully and score based on evidence.
• Length of service: “last in, first out” is not automatically unlawful, but it can be indirectly age discriminatory and is rarely recommended as a main factor.

A practical rule: if you can’t explain and evidence the score in one or two sentences, it’s probably too subjective.

Make Sure The Selection Process Matches Your Documents

If your Employment Contract or policies set out a redundancy procedure (even briefly), follow it - or take advice before deviating.

Inconsistent processes (or “making it up as you go”) is a common reason redundancies get challenged.

Consultation: How Pooling Fits Into A Fair Redundancy Process

Even if you’ve chosen a sensible pool, you still need a fair process - and consultation is a key part of that.

Consultation is not just telling staff what you’ve already decided. It’s about:

• explaining the proposed redundancy situation
• sharing the proposed pooling and selection approach
• listening to feedback (including objections to the pool)
• considering alternatives (like redeployment or reduced hours)

If you’re proposing to make 20 or more employees redundant at one establishment within a period of 90 days, you’ll usually need to follow collective consultation rules. Minimum consultation periods generally apply (often at least 30 days before the first dismissal takes effect for 20–99 redundancies, and at least 45 days for 100+), and you may also need to notify the Secretary of State via form HR1. The rules are technical and time-sensitive, so it’s worth checking the thresholds and timeframes for redundancy consultation periods early in your planning.

Be Ready For Pooling Challenges

It’s common for employees to say “I shouldn’t be in the pool” or “why isn’t X in the pool?”. Don’t treat that as trouble - treat it as part of consultation.

What helps reduce risk is:

• showing you’ve considered their point properly
• responding with role-based reasoning (not personal reasoning)
• updating the pool if the objection exposes a genuine flaw

If you do change the pool, document why. If you don’t change it, document why not.

Don’t Forget Suitable Alternative Employment

You should consider whether there are any suitable alternative roles available for at-risk employees. For small businesses, there may not be many vacancies - but you still need to check and document that you did.

And if your redundancy situation happens alongside a business sale or restructure, you may also need to consider whether TUPE applies (because that can change what you’re allowed to do, and when).

Common Redundancy Pooling Mistakes That Increase Legal Risk

There are a few patterns we see regularly when small businesses run redundancies under pressure.

Here are some of the biggest redundancy pooling mistakes (and what to do instead).

1) Choosing A Pool To Fit A Preferred Outcome

If your pool is basically “the person we want to exit”, that’s a red flag. Even if redundancy is genuine, a targeted pool can look like a sham redundancy.

Instead: define the pool based on the work affected and the structure you need going forward, then apply fair criteria.

2) Treating Performance Issues As Redundancy

Redundancy is about the role, not the person. If the work still exists but you’re selecting someone because they’re not doing well, you’re in performance management territory.

Instead: use documented performance processes (and keep good records), such as capability procedures - for example, a structured capability process often gives you a safer route when redundancy isn’t the real reason.

3) Using Overly Subjective Criteria

Criteria like “attitude” or “team fit” are very hard to defend unless you can point to consistent evidence and scoring guidance.

Instead: stick to measurable factors and provide score descriptors (what does a 1/5 or 5/5 actually mean?).

4) Forgetting How Notice And Pay Interact With The Process

Even if your pooling and selection is fair, you can still create risk if notice isn’t handled correctly.

Make sure you’re clear on statutory and contractual notice rules (and whether you’re paying in lieu of notice). It’s worth checking redundancy notice periods before you confirm final dates.

5) Not Keeping A Paper Trail

In a dispute, it’s rarely enough to say “we did it fairly”. You’ll want to show:

• how you decided the pool
• the selection criteria
• the scoring evidence
• consultation notes and correspondence
• alternative roles considered

This documentation also helps you stay consistent and reduces the risk of managers making off-the-cuff decisions.

Key Takeaways

• Redundancy pooling is the step where you decide which employees are “in scope” for redundancy selection - and it’s one of the most common areas employees challenge.
• A defensible pool is usually based on similarity of work and interchangeability, not just job titles (especially in small businesses where roles overlap).
• A “pool of one” can be lawful, but it often carries higher challenge risk - so document your rationale and consult properly.
• Use objective, role-relevant selection criteria and keep written evidence for scoring decisions (a scoring matrix can help keep this consistent).
• Consultation should be genuine - be ready to consider and respond to objections about the pool, and document your responses.
• Watch for discrimination risks when defining the pool and criteria, especially where your approach may disproportionately affect certain groups.
• Getting advice early can help you plan timelines, consultation, notice, and documentation so you’re protected from day one.

If you’d like help running a redundancy process (including redundancy pooling, scoring criteria, consultation documents, and risk checks), you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.