A complaint about unpaid wages, repeated bullying or discriminatory treatment can make everyday work difficult. The grievance procedure at work in the UK provides a structured way to raise the problem, ask for an investigation and receive a decision.
For employees in England, Scotland and Wales, the Acas Code of Practice sets the benchmark for a fair process. Northern Ireland has a separate framework under the Labour Relations Agency (LRA), although the practical stages are similar.
When should you raise a workplace grievance?
Many disagreements can be settled through a conversation with a manager. You might first ask payroll to correct an error or explain why a rota has changed. Keep a short record of what you raised and the response.
A formal workplace grievance is appropriate when informal efforts have failed, you are uncomfortable raising the issue informally, or the allegation is serious. Sexual harassment, discrimination, threats or persistent non-payment may justify going straight to a written complaint. You do not need to wait for a situation to become unbearable.
Read your employer’s grievance policy, usually available in a handbook or HR system. It should explain whom to contact, the stages involved and how to appeal. If your complaint concerns your manager, approach HR or another designated manager rather than sending it to the person complained about.
How to write a grievance letter that gets to the point
Your grievance letter should make it easy for someone unfamiliar with the dispute to understand what happened. State clearly that you are raising a formal grievance. Then organise the events chronologically, identifying dates, people involved and relevant documents. Distinguish what you witnessed personally from what someone else told you.
Include the effect on you, such as missed pay, changes to duties or concerns about your safety. Explain what you would like the employer to do: investigate particular incidents, correct your pay, stop inappropriate behaviour or agree measures to prevent a recurrence.
For example, a retail employee who received £180 less than expected could write: “My payslip dated 30 September shows 12 fewer hours than my approved timesheet. I reported this to payroll on 2 October and have not received a correction. Please investigate and confirm when any underpayment will be repaid.” That is more useful than writing only “Payroll keeps treating me unfairly.”
Attach relevant payslips, messages or notes, keeping copies securely. Avoid secretly accessing colleagues’ private records or gathering information you are not entitled to see. Send the letter to the person named in the policy and retain proof of submission.
What happens during a grievance meeting?
Your employer should arrange a grievance meeting without unreasonable delay, allowing time for preparation. Acas guidance suggests ideally within five working days, but this is a recommendation, not a fixed statutory deadline.
At the meeting, explain the complaint calmly, refer to your evidence and identify any missing documents or witnesses. Ask how the investigation will proceed and when you can expect an answer. Request a copy of the meeting notes and correct significant inaccuracies promptly.
Where the grievance concerns a breach of a legal or contractual duty, employees and workers generally have a statutory right to be accompanied by a work colleague or eligible trade union representative. Employers should also consider reasonable adjustments for disabled staff. Other companions may be permitted by policy or agreement.
The outcome and your right to a grievance appeal
The employer should communicate its decision in writing, explaining what it found and what action, if any, will follow. Some measures may remain confidential because they concern another employee. An unsuccessful grievance does not automatically mean your complaint was unreasonable.
If the decision overlooks evidence, contains factual errors or follows an unfair investigation, submit a grievance appeal in writing. Identify the specific problems and the outcome you are seeking, rather than simply repeating your original letter. Check the workplace deadline; Acas considers five working days after the outcome a reasonable suggested appeal period where no policy deadline applies.
Where possible, someone uninvolved in the original decision should hear the appeal, and you should receive the final decision in writing. Keep all correspondence together so you can establish what was raised and when.
Why the type of complaint matters
A grievance about discriminatory treatment should identify the conduct and, where relevant, the protected characteristic involved. For more context, see the related topic of workplace discrimination rights. Harassment allegations may require immediate protective measures, such as separating shifts without penalising the person who complained.
In pay disputes, compare the contract, timesheets and payslips; the related topic of unlawful deductions from wages can help clarify possible rights. Where trust has broken down so badly that resignation is being considered, read about constructive dismissal before taking action. Resigning does not automatically establish a constructive dismissal claim, and specialist advice is particularly valuable.
Do not let the internal process obscure tribunal deadlines
Filing a grievance or appeal does not itself pause the deadline for an employment tribunal claim. From 1 October 2026, the usual limit for many claims arising on or after that date increased to six months, generally calculated as six months less one day. For many disputes arising before 1 October 2026, the previous three-month limit remains relevant. Exceptions and claim-specific rules apply.
Normally, you must notify Acas for early conciliation within the applicable limit before bringing a claim in Great Britain. Timely notification can pause the tribunal clock during conciliation. Northern Ireland generally uses the LRA and different tribunal arrangements. Check the precise deadline early, especially for repeated incidents, discrimination or dismissal.
An employment tribunal can also adjust compensation by up to 25% in relevant cases where either side unreasonably fails to follow the Acas Code. This is not an automatic penalty and does not mean every grievance leads to a claim.
Frequently asked questions
Can I raise a grievance while still employed?
Yes. The process exists to address concerns while you work, although former employees may also raise issues in some circumstances. Report serious safety or harassment concerns promptly rather than waiting for an annual review.
Can my employer ignore a formal grievance?
An employer should follow a fair process, investigate where necessary and provide an outcome. If there is no response, follow up in writing, ask for a timetable and seek advice. Silence does not extend a tribunal deadline.
Can I bring a solicitor to the grievance meeting?
A solicitor is not usually an automatic choice under the statutory accompaniment right. The standard companions are a colleague or eligible trade union representative. Your employer may agree to someone else, and disability-related adjustments may affect what support is appropriate.
What if the grievance appeal fails?
Review the final reasons, preserve your documents and consider independent advice, mediation or Acas early conciliation where appropriate. The next step depends on the legal issue and time remaining, not simply on whether the employer rejected your complaint.
Taking the next step
A clear grievance focuses on verifiable events and practical remedies. Follow your employer’s written procedure, prepare for the meeting and challenge an unfair outcome promptly. Most importantly, keep an independent eye on legal deadlines while the internal process unfolds.