Formal Grievance Letter: How to Write a Clear, Effective Complaint

A formal grievance is a written workplace concern or complaint, not a guaranteed route to a particular outcome. In Great Britain, the Acas Code sets out a fair process: put concerns in writing, meet to discuss them, communicate the decision and offer an appeal. The Code is guidance taken into account by tribunals in relevant cases, not a promise of a settlement. In Northern Ireland, refer to the Labour Relations Agency (LRA) Code and local procedures.

When to write

Raise concerns promptly. You do not have to wait for two or three incidents, exhaust informal steps, or still be employed before raising a grievance. For urgent discrimination, safety or harassment concerns, get advice promptly. Collect the records you already have without taking other people's confidential information improperly.

A useful structure

  1. Give your name, role, date and the heading 'Formal grievance'.
  2. Explain what happened, when and who was involved. Separate what you witnessed from what you infer; include available emails or meeting notes.
  3. Describe the impact on you, including any adjustments or support needed. It is fine to explain how you felt as well as recording the facts.
  4. Identify relevant policies or legal issues if you know them, without asserting a breach that has not been established.
  5. Say what outcome you hope for, such as a fair investigation, changed arrangements or an apology. Ask about the next steps and keep a copy.

The meeting, decision and appeal

Your employer should deal with the grievance without unreasonable delay, arrange a meeting, give a decision in writing and offer an appeal. At a formal grievance meeting, a worker can make a reasonable request to be accompanied by a fellow worker or an eligible trade union companion. Prepare your key points, request a break if needed and ask for corrections to inaccurate meeting notes. If the outcome does not address the issues, appeal according to the stated procedure.

A tribunal can adjust compensation by up to 25% in relevant cases for an unreasonable failure to comply with the Acas Code; an uplift is not automatic. A grievance does not stop the tribunal limitation clock. In Great Britain many employment claims normally need Acas early conciliation notified within three months less one day of the act or effective termination date, but the relevant date, extensions and types of claim vary. Early conciliation can affect time limits: calculate them specifically and seek advice before they expire. Northern Ireland uses LRA early conciliation and different rules.

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Official sources: Acas disciplinary and grievance Code; Acas employment tribunal time limits; LRA grievances (NI). General information only.