Can I Dismiss an Employee for Poor Performance?

If an employee is struggling to meet the required standard, the issue may fall under capability. Before dismissal, an employer should normally be able to demonstrate what the performance concerns were, what standard was expected, what support was provided, and that the employee had a reasonable opportunity to improve.

Nectar HR helps employers assess performance problems, understand the legal risks, and manage the process through to an appropriate, defensible outcome.

When can poor performance lead to dismissal?

Capability is a potentially fair reason for dismissal. However, whether a dismissal is legally fair will depend upon the specific circumstances and the fairness of the procedure followed.

Before considering dismissal, ask yourself these essential questions:

• What exactly is the employee failing to do?
• Can we clearly evidence and document it?
• Were they explicitly told what standard was required?
• Have the concerns previously been discussed with them?
• Have they been given appropriate support, coaching, or training?
• Have they had a genuine, reasonable opportunity to improve?
• Could health, disability, or another underlying issue be affecting their performance?
• Have we strictly followed our own company policies and procedures?

If several of those questions produce uncomfortable answers, dismissal may be premature and procedurally unfair.

Do I have to give them a Performance Improvement Plan (PIP)?

There is no universal statutory rule requiring every single performance issue to involve a formal document called a Performance Improvement Plan (PIP).

What truly matters in the eyes of an Employment Tribunal is whether the employee clearly understands the concerns, the standard required, and what they need to do to improve. For more serious or persistent performance concerns, a structured improvement plan is invaluable.

A compliant plan should normally include clear objectives, measurable performance standards, appropriate management support, and realistic review dates.

How long should I give someone to improve?

There is no single correct timescale laid down by law. It depends on the nature of the role, the severity of the problem, and how quickly measurable improvement can reasonably be demonstrated.

A relatively simple administrative error may be capable of improvement quickly. Conversely, a senior manager responsible for longer-term commercial targets or complex client pipelines may need a longer review period before meaningful, sustained improvement can be fairly assessed.

“The key test is reasonableness. Setting an impossibly short timescale because you already want the employee gone can create substantial and unnecessary tribunal risk.”

What if I've already spoken to them several times?

This is extremely common. Business owners and managers often tell us: “I've had this conversation with them over and over again.”

That context matters, but from an HR advisory and legal standpoint, we need to establish what those previous conversations actually involved:

• Were the concerns specific and supported by examples?
• Were the expectations documented in writing?
• Was the employee explicitly told that their performance was unacceptable?
• Were they told what exact improvement was required?
• Was any practical support or training agreed?
• Was there a structured review meeting scheduled?

An informal conversation is useful, but a series of vague chats does not amount to an effective, compliant performance process. If informal management has not worked, it is time to formalise the process.

What if they're capable but just won't do it?

Then you may not have a capability issue at all.

There is a fundamental difference between capability and conduct under UK employment regulations. Identifying the right issue at the beginning helps determine the correct, defensible procedure.

Can I just offer a settlement agreement instead?

Sometimes an employer decides that continuing a lengthy, formal capability process is not commercially desirable. Depending on the circumstances, a protected conversation under Section 111A of the Employment Rights Act 1996 and a settlement agreement may be worth considering.

However, this is not something to rush into blindly. There are strict statutory rules governing protected conversations, and protection does not apply to every type of claim (notably discrimination or automatic unfair dismissal) or improper conduct. Always seek professional HR counsel before initiating negotiations or making a formal exit offer.

What does a fair performance dismissal process look like?

There is no identical, rigid process for every single case, but broadly an employer must be able to demonstrate:

• Clear, documented performance concerns
• Objective evidence supporting those shortfalls
• Clear expectations and role benchmarks communicated to the employee
• Appropriate coaching, supervisory support, and training
• Reasonable, measurable opportunities to improve
• Formal written warnings issued where appropriate
• Regular, documented review meetings
• Fair consideration of the employee's explanations and circumstances
• Full consideration of relevant health or disability issues
• A fair, unbiased final decision
• A formal right of appeal where a warning or dismissal is issued

The process must be genuine. If your paperwork claims “we want you to improve” while management has already predetermined that the employee will be terminated, tribunal claims are much more likely to succeed.

When should I take professional HR advice?

We strongly recommend seeking specialist HR advice before taking dismissal action where:

• The employee has significant continuous service
• There may be an underlying disability or long-term health condition
• The employee has raised a formal grievance
• They have complained of discrimination, bullying, or harassment
• They have raised health and safety concerns
• They have made a protected disclosure or raised whistleblowing concerns
• The employee is pregnant or returning from family-related leave
• There is little contemporaneous written evidence of previous performance management
• The process has become contentious or adversarial
• You are considering a settlement agreement or protected conversation instead
• You are simply unsure whether your proposed process meets ACAS standards