Taking notes during a formal workplace meeting

As an Employment Law team, we often hear from employers after employment tribunal claims have already landed on their desk. Many of these claims stem from avoidable mistakes in everyday HR processes, often due to lack of training, inconsistent application of procedures, or simply not recognising when legal advice should be sought.

In this article, we look at some of the common HR mistakes and employment law mistakes we regularly see, and the practical steps employers can take to avoid employment tribunal claims.

1. Poor Handling of Disciplinary and Grievance Procedures

One of the most common HR mistakes employers make is failing to follow a fair disciplinary procedure or grievance procedure.

Employers sometimes deviate from their own policies, overlook the ACAS Code of Practice, or rush the process when dealing with misconduct, grievances or employee disciplinaries. Common issues include:

  • Failure to carry out a fair investigation
  • Inconsistent disciplinary treatment of employees in similar situations
  • Not giving the employee a proper opportunity to respond to allegations
  • Failing to provide the employee with enough information to answer the case against them
  • Investigations dragging on for too long
  • Investigations being rushed or skipped entirely

It is important to remember that in an unfair dismissal claim, a Tribunal will consider both the reason for the dismissal and whether the process was fair in all the circumstances.

A justified outcome reached through a flawed disciplinary process can still result in a costly finding of unfair dismissal.

Our top tip: Ensure line managers and HR professionals are familiar with your disciplinary and grievance policies, as well as the ACAS Code of Practice. It is often easier said than done, but try to involve individuals who have the capacity to manage the process properly and give it the time it requires.

2. Inadequate Performance Management

Tribunals often see cases where underperformance at work was not addressed formally, or where an employee was dismissed for capability without going through a fair process.

Common performance management mistakes include:

  • Lack of clear, measurable SMART objectives
  • No meaningful performance review process
  • No evidence of support or training
  • Failing to use a performance improvement plan
  • Sudden escalation to dismissal without prior warnings
  • Failing to explain what improvement is required
  • Failing to give the employee a reasonable opportunity to improve

Where an employer is considering dismissing an employee for poor performance, it is important to follow a fair capability process. This usually means raising concerns early, setting clear expectations, offering support and keeping a written record.

Our top tip: Raise performance concerns early, document them clearly and use a structured process. A well-managed PIP can make the difference between a fair and unfair dismissal.

3. Unlawful Discrimination

Discrimination claims workplace issues do not always stem from overt bias. More often, claims arise from poor handling of flexible working requests, insensitive remarks, “banter” that crosses a line, or the mishandling of sickness absence and family leave.

HR teams and managers need to understand that protection from discrimination under the Equality Act 2010 is not limited to a few obvious categories. The Act protects individuals from being treated less favourably because of nine protected characteristics. The Equality and Human Rights Commission confirms that the Equality Act protects people from discrimination because of protected characteristics including age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex and sexual orientation.

Examples of unlawful discrimination at work may include issues involving:

  • Disability discrimination
  • Sex discrimination
  • Age discrimination
  • Race discrimination
  • Religion or belief discrimination
  • Pregnancy and maternity discrimination
  • Sexual orientation discrimination
  • Gender reassignment discrimination
  • Harassment at work
  • Victimisation at work

Many claims arise not from malice, but from lack of awareness, poor communication or inconsistent decision-making.

Our top tip: Provide regular training to all staff on discrimination law, equality and unconscious bias. Managers should understand how everyday decisions about absence, performance, flexibility and conduct can create legal risk.

4. Mismanagement of Sickness Absence

Sickness absence management, particularly long-term sickness absence, is understandably challenging. However, handling it poorly can lead to disability discrimination or unfair dismissal claims.

Common absence management mistakes include:

  • Dismissing an employee without obtaining medical evidence
  • Failing to obtain an occupational health report where appropriate
  • Not consulting the employee about their condition or prognosis
  • Failing to consider reasonable adjustments
  • Assuming absence is misconduct
  • Moving too quickly to dismissal for sickness absence
  • Failing to distinguish between conduct, capability and health-related absence

Where sickness absence may be linked to a disability, employers should take particular care. This may include obtaining occupational health advice, reviewing medical evidence, consulting the employee about adjustments and considering whether the employee meets the legal definition of disability under the Equality Act.

Our top tip: Involve occupational health early, consult with the employee about what adjustments might help, and consider reasonable adjustments before taking formal action. Incorrect assumptions can be very costly.

5. Poor Documentation and Inconsistent HR Decisions

Another frequent issue is the absence of clear records. Employers may have acted reasonably, but if there is no evidence of what was considered, what was discussed or why a decision was reached, defending an Employment Tribunal claim becomes much harder.

Common problems include:

  • No notes of meetings
  • Unclear investigation records
  • Inconsistent scoring in redundancy or performance processes
  • Missing correspondence
  • Failure to document warnings, support or adjustments
  • Unclear reasons for dismissal

Documenting HR decisions is not simply an administrative exercise. It is often essential evidence if an employee later argues there was procedural unfairness, discrimination or dismissal without fair process.

Our top tip: Keep accurate notes, confirm key decisions in writing and make sure the reason for each decision is clear, consistent and supported by evidence.

Why This Matters for Employers

Tribunal claims cost time, money and, in many cases, reputational damage, regardless of outcome. Most importantly, many are avoidable.

Getting the law wrong is one thing, but a lot of claims we see stem from getting the process wrong. A fair reason for dismissal can still be undermined by a poor process. Equally, a well-intentioned management decision can create risk if it is inconsistent, undocumented or discriminatory in effect.

If you are unsure, it is better to seek employment tribunal advice or wider employment law advice for employers proactively, rather than trying to rectify the issue after the fact.

A short conversation with our team now can help prevent a lengthy, stressful and costly claim later. Franklins’ employer-facing Employment Tribunal page confirms that the team provides clear, practical advice and representation to employers facing Tribunal claims, with the aim of minimising risk and protecting the business.

Frequently Asked Questions

There are no tribunal fees for either side, but defending a claim typically costs an employer several thousand to tens of thousands of pounds in legal fees, plus significant management time. Costs are rarely recovered from the other side even when the employer wins, which is why prevention and early settlement are often more economical.

Currently, most claims must be started within three months less one day of the act complained of, via Acas early conciliation. Under the Employment Rights Act 2025, this limit is expected to extend to six months from October 2026, giving employees substantially longer to bring claims.

The tribunal can order compensation, which in unfair dismissal claims includes a basic award and a compensatory award for financial loss. Discrimination compensation is uncapped and includes injury to feelings. Tribunal judgments are also published online, so an adverse finding carries reputational as well as financial consequences.

Yes. Most claims settle before a final hearing, either through Acas conciliation, which is free and available at any stage, or through a settlement agreement. Early settlement can limit legal costs, management time and publicity, though it should be weighed against the strength of the employer’s case.

Yes. Unfair dismissal and discrimination law applies regardless of business size, and there is no small-employer exemption from the ACAS Code of Practice. Tribunals may take an employer’s size and resources into account when judging what process was reasonable, but this offers limited protection for skipping fair procedure altogether.

It is the test tribunals apply in unfair dismissal claims. The question is whether dismissal fell within the range of responses a reasonable employer could have adopted, not whether the tribunal itself would have dismissed. Even so, a decision within the band can be unfair if the process behind it was flawed.

Yes. Claims for discrimination, unlawful deductions from wages, whistleblowing detriment and other complaints do not require the employee to have left. Employers should be careful not to treat an employee less favourably for bringing or raising a claim, as this can amount to victimisation and generate further claims.

An increase is widely expected. The qualifying period for unfair dismissal reduces to six months from January 2027, the time limit for claims is expected to double to six months, and the cap on unfair dismissal compensation is being removed. Together these expand both who can claim and what claims are worth.

Disclaimer: The information provided on this blog is for general informational purposes only and is accurate as of the date of publication. It should not be construed as legal advice. Laws and regulations may change and the content may not reflect the most current legal developments. We recommend consulting with a qualified solicitor for specific legal guidance tailored to your situation.

Written by Georgia Harris
Solicitor, Employment Law at Franklins Solicitors LLP

Specialises in employment contracts, staff handbooks, Section 1 Employment Rights Act compliance, grievance and disciplinary processes, workplace policies and advising both employers and employees on contentious and non-contentious employment matters.

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