How To Improve Performance

Every employer wants a high-performing team. But at some stage, most managers will face the challenge of poor performance. If handled badly, underperformance can harm morale, damage productivity, and even lead to costly legal disputes.

The key is to approach performance management fairly, consistently, and in line with UK employment law. This guide explains the common causes of poor performance, the practical steps you can take, and the frameworks that help protect both your business and your people.

Why performance problems arise

Not all underperformance stems from the same cause, and how you respond as an employer will depend on whether it’s a matter of capability (skills, resources, health) or conduct (motivation, effort, behaviour). UK employment law makes this distinction important, because misconduct and capability issues should be handled through different procedures.

A useful way to think about it is through the formula:

Performance = Ability × Motivation

• • Ability includes aptitude, training, experience, and the resources provided by the organisation.

  • Motivation covers commitment, engagement, and external pressures that affect desire to perform.

This matters because:

• • An employee with low ability but high motivation may benefit from training or mentoring.
  • A highly skilled employee with low motivation may need engagement strategies, clearer objectives, or wellbeing support.

Common causes of poor performance

1. 1. Lack of skills or training – The employee has never been properly trained, or the role requirements have changed.

   2. Low motivation or disengagement – They no longer feel valued, challenged, or supported.

   3. Poor management or unclear expectations – The employee isn’t sure what “good” looks like.

   4. Workplace culture or conflict – Difficult colleagues or toxic environments can hold people back.

   5. Personal circumstances – Illness, stress, or life events outside work may be impacting performance.

   6. Insufficient resources – Outdated systems, lack of tools, or unrealistic workloads.

By diagnosing the cause first, employers can target the right solution instead of defaulting to disciplinary action.

Framework for managing poor performance (P.R.I.C.E.)

A structured process can make managing poor performance less daunting. One useful model is P.R.I.C.E.:

• • P = Pinpoint the standard you want
    Be clear about what good performance looks like. Use job descriptions, KPIs, or agreed objectives.

  • R = Record the facts of what is happening
    Keep accurate notes of specific examples of underperformance. Facts, not opinions, help avoid disputes.

  • I = Involve the person
    Hold a private meeting and ask for their perspective. Often, employees know what’s holding them back.

  • C = Coach, support, train
    Offer mentoring, extra training, or reasonable adjustments. Show you are invested in their success.

  • E = Evaluate what has changed
    Review progress after a set timeframe. If performance improves, acknowledge it. If not, consider next steps.

Using P.R.I.C.E. gives you a clear, fair process, and creates a record in case formal procedures are needed later.

Performance Improvement Plans (PIPs)

If informal conversations and support don’t resolve the issue, the next step may be to introduce a Performance Improvement Plan (PIP). A PIP provides a structured, time-bound framework that gives employees every reasonable opportunity to turn things around, while giving employers a clear record that a fair process has been followed.

A well-drafted PIP should:

• • Outline specific performance concerns – vague statements like “not meeting expectations” won’t help. Use measurable examples (missed deadlines, error rates, client complaints).

  • Set measurable targets and realistic timescales – e.g. “Complete X reports per week with no more than Y% errors by [date].”

  • Detail the support provided – this could include additional training, mentoring, reduced workload, closer supervision, or access to resources.

  • Be regularly reviewed – progress meetings should be scheduled (weekly or fortnightly), with notes recorded after each one.

How long should a PIP last?

There’s no legal minimum, but most PIPs in the UK last between 4 and 12 weeks. The exact length depends on:

• • the complexity of the role,

  • the seriousness of the performance concerns, and

  • whether new training or processes are required.

For example, if the issue is accuracy in admin tasks, a 4–6 week PIP may be appropriate. If the employee needs to learn a new system or develop leadership skills, 12 weeks may be more realistic.

Why PIPs matter

Handled well, a PIP shows that:

• • The employer is acting reasonably and fairly.

  • The employee has been given clear expectations and support.

  • There’s documented evidence of efforts to resolve the issue before any dismissal decision.

This documentation can be vital if the employee later challenges the process at a tribunal.

Tip: A PIP should never be used as a “tick-box” exercise to exit someone quickly. Tribunals look closely at whether the plan was achievable, fairly monitored, and genuinely designed to help the employee improve.

Legal Considerations for UK Employers

When dealing with poor performance, employers must do more than just follow best practice, they need to stay compliant with UK employment law. Mismanaging the process could expose your business to grievances, tribunal claims, or reputational harm.

Fair process
Employers should follow the ACAS Code of Practice on Disciplinary and Grievance Procedures, which sets out the minimum standards expected. Even though poor performance is usually treated as a capability issue (not misconduct), the same principles apply: give the employee notice of concerns, hold meetings, allow them to respond, and give them the chance to improve. Failing to do so can make a dismissal unfair.

Equality Act 2010
If underperformance is linked to a health condition, mental health issue, or disability, employers may have a duty to make reasonable adjustments. This could include reduced hours, adapted equipment, extra training, or altered duties. Ignoring this obligation risks a disability discrimination claim at an employment tribunal.

Consistency
Treating one employee differently from others in a similar situation can lead to allegations of unfairness or discrimination. Employers should apply policies consistently across the workforce and ensure that decisions are based on objective evidence, not personal bias or assumptions.

Documentation
Accurate record-keeping is essential. Document meetings, agreed actions, training provided, and progress reviews. If the employee improves, those records demonstrate success. If not, they provide evidence that you followed a fair process before moving to disciplinary action or dismissal. Without this paper trail, defending an unfair dismissal claim becomes much harder.

Preventing Poor Performance in the Workplace

While structured processes like PIPs are important, the best way to deal with poor performance is to prevent it from arising in the first place. Employers who take a proactive approach often find that issues are resolved before they become formal problems.

1. Set clear expectations from day one
Confusion about job roles or standards is one of the biggest causes of underperformance. Make sure job descriptions are accurate and that new starters understand what “good” looks like.

2. Provide regular feedback
Annual appraisals are not enough. Ongoing one-to-one meetings give employees a chance to discuss challenges early and allow managers to course-correct before performance dips.

3. Support development and progression
Investing in training, mentoring, and career development helps employees feel valued and motivated, while equipping them with the skills needed to perform well.

4. Foster open communication
Employees are more likely to raise concerns about workload, stress, or barriers to success if they feel safe and supported. A culture of openness can prevent problems from festering.

5. Recognise and reward good work
Acknowledging achievements, whether through praise, incentives, or progression opportunities — builds motivation and reinforces the behaviours you want to see repeated.

By focusing on prevention, employers can reduce the likelihood of formal performance management processes being needed, saving time, reducing stress, and strengthening engagement across the team.