How to run a Performance Improvement Plan (PIP)
A fair PIP sets SMART improvement targets over a defined review period, provides support, and clearly states the consequences of failure. ERA 2025 makes the process more important than ever.
A Performance Improvement Plan (PIP) is a structured plan to help an employee improve sustained underperformance. Done well, it gives the employee a genuine chance to improve and gives the employer a defensible record if dismissal becomes necessary. Done badly, it is a tribunal liability.
Before starting a PIP
- Document the performance concerns clearly. Vague concerns ("attitude", "not pulling weight") will not survive scrutiny.
- Have prior informal discussions with the employee. A PIP should not be the first time the employee hears that performance is a concern.
- Consider underlying issues — health, personal circumstances, workload, training gaps, management quality. PIPs that ignore root causes typically fail.
- Consider whether it's really a misconduct issue (which would go to the disciplinary procedure) vs a capability issue (PIP).
The components of a good PIP
A defensible PIP has:
- Clear, specific performance concerns — with examples.
- SMART targets — Specific, Measurable, Achievable, Relevant, Time-bound.
- Support to be provided — training, mentoring, coaching, reduced workload, equipment, regular check-ins.
- Review period — typically 4 to 12 weeks, depending on the role and the targets. Should be long enough for genuine improvement to be possible.
- Regular review meetings — usually weekly or fortnightly.
- Consequences of failure — clearly stated. Typically: failure may result in a formal capability process, potentially leading to dismissal.
- Right to be accompanied at any formal review meeting.
The review meetings
- Document each meeting in writing — what was discussed, what progress has been made, what remains outstanding.
- Provide written feedback after each meeting.
- Adjust support if the employee is making progress but needs more help.
At the end of the PIP
- Targets met: confirm in writing. Continue monitoring informally for a defined period.
- Targets partially met: consider an extension if progress is genuine. Document the basis for any decision.
- Targets not met: move to a formal capability process under the ACAS Code.
The formal capability process
If the PIP fails, the employer should follow a procedure that mirrors the ACAS Code:
- Invite to a capability hearing in writing.
- Hold the hearing with the right to be accompanied.
- Decide whether capability dismissal is the right outcome.
- Always offer a right of appeal.
Capability dismissal is one of the five potentially fair reasons for dismissal under the Employment Rights Act 1996.
ERA 2025 implications
From 1 January 2027:
- Unfair dismissal qualifying period drops to 6 months.
- Compensation cap abolished.
- Capability dismissals with an inadequate process expose employers to uncapped compensation.
This makes a properly run PIP — followed where necessary by a properly run capability process — significantly more important. Short-cuts that "worked" before will not survive January 2027.
Disability considerations
If the employee has a disability (or you suspect they might), the PIP must:
- Be adjusted as a reasonable adjustment where appropriate.
- Consider whether the underperformance is linked to the disability.
- Account for any reasonable adjustments not yet made.
A PIP that doesn't take disability into account can be disability discrimination, regardless of the performance issue.
Official source: ACAS — Performance management.
PIPs and reviews that hold up at tribunal
Performance Improvement Plans, capability hearing invites, and review documentation — structured to the ACAS Code, defensible if dismissal becomes necessary.
Related articles
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Read articleThis article is reference content, not legal advice. UK employment law changes frequently; while we verify articles regularly against the named source, you should always check the current position with a qualified employment solicitor for any specific decision. Complyer Editorial Team · Updated May 2026.