Dismissal for Capability Reasons: Meaning, Legal Tests and Fair Procedure

What capability dismissal means

Dismissal for capability reasons is one of the five potentially fair reasons for dismissal under UK employment law. It arises where an employee is dismissed because they are unable to perform their job to the required standard due to lack of skill, competence, health, or qualifications.

The legal framework is set out in the Employment Rights Act 1996, which recognises capability as a potentially fair reason for dismissal under section 98. However, even where capability is genuine, the employer must still follow a fair and reasonable procedure; otherwise, the dismissal may be classed as unfair.

Capability dismissals are frequently examined by employment tribunals in unfair dismissal claims, particularly where performance management or medical capability processes are involved.

What capability means in employment law

In legal terms, “capability” refers to an employee's ability to perform work of the kind they were employed to do.

It typically covers two main areas:

1. Skill or performance-based capability

This relates to whether an employee can carry out their role effectively. Examples include:

• Consistently failing to meet performance targets
• Poor quality of work
• Lack of required skills or competence
• Inability to perform core job duties

2. Health-based capability

This relates to whether an employee can perform their role due to physical or mental health conditions. Examples include:

• Long-term illness
• Recurring sickness absence
• Medical conditions preventing essential duties

When dismissal for capability becomes potentially fair

A capability dismissal may be fair if the employer can show:

• A genuine concern about performance or health
• A reasonable investigation into capability issues
• Proper warnings and opportunities to improve (where appropriate)
• Consideration of alternative roles or adjustments
• A fair and reasonable decision to dismiss

The tribunal will assess fairness based on all circumstances, including the size and resources of the employer.

Performance-based capability dismissals

What employers must show

Where capability relates to performance, employers are generally expected to follow a structured process:

• Clear identification of performance issues
• Evidence-based assessment (not opinion alone)
• Communication of required standards
• Reasonable time and support to improve
• Formal warnings if performance does not improve
• Final consideration before dismissal

Performance capability dismissals are often closely linked to performance improvement plans (PIPs).

Common procedural expectations

Tribunals typically expect:

• Clear performance targets
• Reasonable review periods
• Training or support where needed
• Right of appeal against dismissal

Failure to follow a fair process is a common basis for an unfair dismissal claim, even if performance concerns are genuine.

Health-related capability dismissals

Where capability is affected by illness or disability, employers must act carefully.

Medical evidence and assessment

Employers are expected to:

• Obtain occupational health or medical reports
• Understand the likely duration of absence
• Assess the employee's ability to return to work

Reasonable adjustments

If the employee is disabled under the Equality Act 2010, employers must consider:

• Adjusted duties
• Flexible working arrangements
• Workplace adaptations
• Alternative roles

Failure to make reasonable adjustments may lead to discrimination claims as well as unfair dismissal issues.

When dismissal may be justified

Dismissal for health capability may be fair where:

• The employee is unlikely to return to work in a reasonable time
• Adjustments are not feasible
• Continued absence significantly impacts the business

Legal test for fairness in capability dismissals

Employment tribunals apply a two-stage test:

Stage 1: Was capability a genuine reason?

The employer must show dismissal was due to:

• Lack of skill or performance, or
• Health-related inability to work

Stage 2: Was dismissal reasonable?

The tribunal considers whether the employer acted reasonably, including:

• Investigation quality
• Warnings and procedures
• Length of service
• Alternatives to dismissal
• Consistency with other cases

Even if capability is proven, dismissal may still be unfair if procedure was inadequate.

Procedural fairness requirements

Fair procedure is central to capability dismissals. Employers are generally expected to:

• Inform the employee of concerns
• Provide evidence of performance issues
• Hold capability meetings
• Allow representation at formal meetings
• Give time to improve
• Issue written warnings if improvement is insufficient
• Offer a right of appeal

Failure in any of these steps can significantly weaken the employer's defence in tribunal proceedings.

Capability dismissal vs misconduct dismissal

Capability should not be confused with misconduct:

• Capability: inability to do the job (performance or health)
• Misconduct: behaviour or wrongdoing

For example:

• Poor sales performance = capability
• Failing to follow instructions deliberately = misconduct

Tribunals scrutinise whether employers correctly classified the reason for dismissal, as misclassification can affect fairness.

Common issues in capability dismissal claims

Employment tribunals frequently consider disputes involving:

1. Inadequate performance warnings

Dismissals without prior warnings are often found unfair unless circumstances justify immediate action.

2. Unrealistic performance targets

Targets must be achievable and clearly communicated.

3. Lack of support or training

Employers are expected to provide reasonable assistance where performance is lacking.

4. Insufficient medical evidence

Health-related dismissals without proper occupational health input are vulnerable to challenge.

5. Failure to consider alternatives

Tribunals expect employers to explore redeployment or adjustments before dismissal.

Time limits for bringing a claim

If an employee believes a capability dismissal was unfair, they must:

• Bring a tribunal claim within 3 months less 1 day of dismissal
• Engage in Acas Early Conciliation before submitting the claim

Strict time limits apply regardless of the merits of the case.

Remedies for unfair capability dismissal

If a tribunal finds the dismissal unfair, possible remedies include:

• Basic award (based on age and service)
• Compensatory award (loss of earnings and benefits)
• Possible adjustments for contributory conduct
• Reinstatement or re-engagement in rare cases

Compensation depends on financial loss and the circumstances of dismissal.

Key Takeaways

Dismissal for capability reasons occurs where an employee is unable to perform their role due to performance deficiencies or health-related limitations. While capability is a legally recognised fair reason for dismissal under the Employment Rights Act 1996, employers must follow a fair and structured process. This includes proper investigation, warnings, support, and consideration of alternatives. Employment tribunals will closely assess procedural fairness and reasonableness, meaning even genuine capability concerns can result in unfair dismissal findings if handled incorrectly.