Formal Grievance Procedure

Formal Grievance Procedure: A Practical Guide for UK Employers

A formal grievance procedure is something many employers only focus on once a problem has already escalated. A formal grievance procedure can feel daunting, particularly for smaller businesses where issues are often dealt with informally. However, failing to handle grievances properly can expose employers to significant legal and reputational risk.

I regularly advise employers who are dealing with grievances that have become entrenched. In many cases, the original issue could have been resolved early. The difficulty arises when concerns are ignored, handled inconsistently, or treated as a personal dispute rather than a legal process.

This article explains how a formal grievance procedure should work in practice, what tribunals expect to see, and how employers can protect their business while treating employees fairly.

What Is a Formal Grievance Procedure?

A formal grievance procedure is the structured process an employer follows when an employee raises a serious workplace complaint. This may relate to bullying, pay, workload, management conduct, discrimination, or breaches of company policy.

Once a grievance is raised formally, employers are expected to take it seriously. It is no longer a casual discussion. Tribunals tend to examine how the grievance was handled, not just whether the complaint was ultimately upheld.

A clear written procedure helps set expectations on both sides. Employers who rely solely on informal conversations often struggle to demonstrate fairness later.

When a Grievance Becomes Formal

Not every complaint automatically triggers a formal grievance procedure. Many concerns can be resolved informally through discussion or mediation.

However, once an employee submits a written grievance or clearly states they wish to raise a formal complaint, employers should switch to a formal process. Delaying this step often causes confusion and frustration.

I have advised employers who continued informal discussions for months, only for the employee to later argue that nothing was done. Tribunals rarely look kindly on that approach.

Key Stages of a Formal Grievance Procedure

Although procedures vary, most formal grievance procedures follow a similar structure.

The grievance should be acknowledged promptly. The employee should be invited to a grievance meeting, given the opportunity to explain their concerns, and allowed to be accompanied.

An investigation may be required, depending on the nature of the complaint. This could involve speaking to witnesses or reviewing documents.

After the meeting, the employer should provide a written outcome, explaining the decision and the reasoning behind it.

Finally, the employee should be given the right to appeal. Failing to offer an appeal is a common procedural flaw.

Why Process Matters More Than Outcome

Employers sometimes focus entirely on whether a grievance is upheld. In reality, tribunals often focus on how the grievance was handled.

An employer can reject a grievance and still be found to have acted reasonably if the process was fair. Conversely, even a well-founded decision can be undermined by poor handling.

This is particularly important where a grievance later links to dismissal, resignation, or tribunal proceedings.

General principles around grievance handling are often compared with guidance from ACAS, although tribunals still assess each case on its own facts.

Grievances and Linked Legal Risks

A formal grievance procedure is rarely an isolated issue. Grievances often sit alongside other legal risks, including discrimination, whistleblowing, or constructive dismissal.

I frequently see cases where an employee resigns after a grievance and claims the employer’s failure to deal with it properly destroyed trust and confidence.

Where grievances are poorly handled, employers may unintentionally strengthen claims that would otherwise have been weak.

This is why grievances should be treated as part of wider risk management, not simply as an HR task.

Common Employer Mistakes

From my experience, disputes involving grievances usually arise from avoidable errors rather than bad intentions.

• Failing to investigate properly
• Predetermining the outcome
• Not offering a right of appeal

Another frequent mistake is allowing the grievance to drift. Long delays often make matters worse and can be interpreted as a lack of seriousness.

Consistency is also critical. Treating similar grievances differently can raise questions of fairness.

Grievances Raised During Disciplinary Processes

Employers often ask what to do when a grievance is raised during a disciplinary process. There is no automatic rule to pause disciplinary action.

The key question is whether the grievance is related to the disciplinary issue. If it is, it may be appropriate to deal with the grievance first. If not, the processes can often run in parallel.

Documenting the reasoning behind how you proceed is important. Tribunals expect to see evidence of careful decision-making.

Record Keeping and Confidentiality

Accurate records are essential throughout a formal grievance procedure. Notes of meetings, investigation findings, and outcome letters often become critical evidence.

Confidentiality should be respected, but it is not absolute. Information may need to be shared with those investigating or responding to the grievance.

Employers should avoid informal discussions that are not documented, as these can later be disputed.

Preventing Escalation

A well-run formal grievance procedure often prevents disputes from escalating further.

Employees who feel heard and treated fairly are less likely to pursue external action, even if the outcome is not what they hoped for.

Employers who regularly review their approach to grievances, drawing on experience and guidance, tend to face fewer tribunal claims overall.

Many employers find it helpful to review previous cases and insights published on the employment law blog to understand how issues commonly develop.

Taking Advice Early

Grievances can quickly become complex, particularly where legal risks overlap.

Seeking advice early often prevents procedural mistakes that are difficult to fix later. It also provides reassurance that decisions are defensible.

For employers who want a broader understanding of how grievances fit within wider employment risk, guidance on our approach to supporting employers explains how we work with businesses across the UK.

For further guidance from EBS Law, you may find these pages helpful:

• employment law advice for employers
• employment law blog
• supporting UK employers