A grievance often begins with one difficult incident: an offensive remark, unpaid wages, an unfair shift pattern, bullying, or a manager who has ignored a serious concern. A clear workplace grievance procedure UK employers can apply fairly gives the issue a proper route forward. It also gives employees a chance to be heard without being expected to resolve a potentially serious matter alone.

For employers, handling a grievance well can protect working relationships, uncover problems before they worsen, and reduce legal risk. For employees, following the procedure carefully can create a useful record and may be essential if the dispute later reaches Acas or an Employment Tribunal.

What is a workplace grievance?

A grievance is a formal concern raised by an employee about something connected with their employment. It may relate to their treatment at work, terms and conditions, relationships with colleagues or managers, health and safety, discrimination, pay, flexible working, holidays, or a failure to follow workplace policies.

Not every complaint needs a formal process. Where appropriate, an employee may be able to speak informally with their line manager first. A straightforward misunderstanding can sometimes be resolved quickly through a conversation. That approach is less suitable where the concern is serious, repeated, involves discrimination or harassment, or relates to the line manager themselves.

Employers should have a written grievance policy that explains who employees should approach, how to submit a grievance, the right to be accompanied at a meeting, and how an appeal will work. The policy should be accessible and applied consistently, while allowing sensible flexibility where the circumstances require it.

The workplace grievance procedure UK employers should follow

The Acas Code of Practice on disciplinary and grievance procedures sets the expected standard for dealing with workplace grievances. It is not legislation in itself, but Employment Tribunals can take it into account. Where a party has unreasonably failed to follow the Code, a tribunal may adjust certain compensation awards by up to 25 per cent.

The process will vary according to the size of the organisation and the nature of the complaint. However, a fair procedure usually has the following stages.

1. Raise the concern in writing

The employee should set out their grievance in writing. This does not need to read like a legal document. It should explain what happened, when it happened, who was involved, how it affected the employee, and what outcome they are seeking.

Relevant documents should be identified or attached where possible. This might include emails, rota records, payslips, meeting notes, screenshots, or names of witnesses. Employees should keep copies of everything submitted.

Employers should acknowledge the grievance promptly and consider whether immediate protective steps are needed. For example, where allegations involve harassment, intimidation, or a serious breakdown in working relations, temporary changes to reporting lines or working arrangements may be appropriate. These steps should not be presented as a punishment for making a complaint.

2. Investigate fairly and proportionately

A proper investigation is often the foundation of a fair outcome. The employer should establish the relevant facts, speak to witnesses where necessary, and review available records. The person investigating should be impartial and, where practicable, should not be the person accused of wrongdoing or responsible for deciding the grievance.

An investigation does not have to be lengthy to be fair. A complaint about an incorrect wage payment may be resolved by checking payroll records. Allegations of discrimination, bullying, or misconduct may require interviews, documentary evidence, and careful assessment of conflicting accounts.

Employers should avoid reaching conclusions before the evidence has been considered. They should also be cautious about promising absolute confidentiality. Information should be handled sensitively and only shared with those who need it to deal with the matter, but a fair investigation may require the allegations to be put to the person complained about.

3. Hold a grievance meeting

The employee should be invited to a meeting to discuss the grievance and should receive reasonable notice. They have a statutory right to be accompanied at a grievance meeting by a work colleague or an accredited trade union representative or official. A companion can support the employee, address the meeting, and confer with them, although they do not usually answer questions on the employee’s behalf.

The meeting should be a genuine opportunity for the employee to explain their concerns and respond to information gathered during the investigation. Employers should listen carefully, ask clear questions, and make an accurate note of the discussion.

Where the employee needs adjustments because of disability, language needs, anxiety, or another relevant circumstance, the employer should consider what will allow meaningful participation. This may include a different meeting format, additional breaks, an interpreter, or written questions. What is reasonable will depend on the individual circumstances.

4. Give a reasoned written outcome

Following the meeting and any further investigation, the employer should provide the decision in writing without unreasonable delay. The outcome should address the main issues raised, state whether the grievance is upheld, partly upheld, or not upheld, and explain the reasons for that decision.

If the grievance is upheld, the employer should set out the action it intends to take. That may include correcting pay, changing workplace arrangements, providing training, reviewing a policy, or beginning a separate disciplinary process. The complainant will not always be told the full detail of action taken against another employee, particularly where this would disclose confidential employment information. However, they should receive sufficient reassurance that their complaint has been addressed.

5. Offer a right of appeal

A fair grievance procedure includes a right of appeal. The employee should be told how to appeal and the deadline for doing so. An appeal should explain why the employee believes the decision was wrong, incomplete, or procedurally unfair, although new evidence may also justify reconsideration.

Ideally, the appeal should be heard by someone more senior or independent of the original decision-maker. In a small business this may not be possible, but the employer should still take reasonable steps to ensure an impartial review. The appeal decision should be confirmed in writing and normally brings the internal process to an end.

When a grievance concerns a manager or serious wrongdoing

Employees should not be expected to submit a grievance to the person they are complaining about. The policy should identify an alternative contact, such as a more senior manager, HR representative, director, or another designated person.

Some concerns require particular care. Allegations of discrimination, sexual harassment, victimisation, whistleblowing detriment, violence, or safeguarding issues may expose an employer to significant legal and reputational consequences. A rushed internal response, or an attempt to dismiss the complaint as a personality clash, can make matters worse.

A grievance is also different from a protected whistleblowing disclosure, although the same facts can sometimes raise both issues. Whistleblowing law has specific requirements and protection depends on the nature of the information disclosed. Legal advice may be appropriate before an employer characterises or responds to such a complaint.

Time limits and tribunal claims

Using an internal grievance procedure does not usually stop the clock for an Employment Tribunal claim. Many claims, including discrimination claims and claims for unfair dismissal, have a time limit of three months less one day from the relevant act or dismissal. There are exceptions, but they should not be assumed.

Before making most tribunal claims, an individual must notify Acas through Early Conciliation. Starting Early Conciliation pauses the tribunal limitation period for a defined period, subject to the statutory rules. Raising a grievance may be sensible and may help resolve the dispute, but employees should obtain advice promptly if there is any possibility of a legal claim.

Employers should avoid using delay as a tactic. An unresolved grievance can affect absence, retention, performance, morale, and the ability to defend a later claim. Employees, meanwhile, should not delay simply because they hope an informal conversation will eventually resolve a serious issue.

Practical steps for employees and employers

Employees should remain factual, keep a dated record, and identify the outcome they want. It is usually more effective to describe specific conduct and its impact than to make broad accusations without examples. They should also continue to act reasonably at work while the process is ongoing, unless there is a genuine safety or health concern.

Employers should treat grievances as a management responsibility rather than an administrative exercise. A consistent policy, trained managers, good records, impartial decision-making, and timely communication are often what make the difference between a dispute being resolved and becoming entrenched.

Where the facts are contested, the potential claim is significant, or the working relationship has broken down, early employment law advice can help both sides understand their position and options. White Horse Solicitors can provide practical support on workplace grievances, investigations, settlement discussions, and related Employment Tribunal issues. The right next step is usually the one that protects your position while keeping a fair resolution possible.