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PerformanceERA 2025Info

How to run a Performance Improvement Plan (PIP)

Last verified May 20263 min readSource: ACAS
TL;DR

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:

  1. Clear, specific performance concerns — with examples.
  2. SMART targets — Specific, Measurable, Achievable, Relevant, Time-bound.
  3. Support to be provided — training, mentoring, coaching, reduced workload, equipment, regular check-ins.
  4. Review period — typically 4 to 12 weeks, depending on the role and the targets. Should be long enough for genuine improvement to be possible.
  5. Regular review meetings — usually weekly or fortnightly.
  6. Consequences of failure — clearly stated. Typically: failure may result in a formal capability process, potentially leading to dismissal.
  7. 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.

Primary source

This article is verified against guidance published by ACAS.

Read the official source

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.

This 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.