How to Keep an Evidence Diary for Workplace Bullying

A useful evidence diary records facts and uncertainty

A workplace bullying diary should record what happened, when it happened, who was involved and what supporting information exists. Keep the incident date separate from the date you wrote the note. Include your response and the practical impact, while distinguishing observation, memory and interpretation. A diary helps organise an account; it does not independently prove the allegation.

You do not need to write a long entry every day. A short, accurate note made while events are fresh is a useful starting point. Choose a format you can maintain and understand later. The record should make it easier to explain events, not turn every evening into another shift of investigating your workplace.

Use a consistent entry structure

Begin with the incident date, approximate time and location or communication channel. Name the relevant people and explain the work context. Then describe the conduct in order. End with your response, immediate consequences, evidence references and any action you took afterwards.

If you do not know a name, describe the person’s role rather than guessing. If an event spans several days, break the sequence into manageable entries. A reader should be able to distinguish a conversation from a later email and a later management decision.

• Incident date and time, with uncertainty labelled.
• Date the entry was written or later updated.
• People present and how they were involved.
• Words or actions, the work context and your response.
• Impact, evidence location and follow-up required.

Write an entry someone else can check

Consider this fictional example: on 14 October, around 9am in the briefing room, my supervisor criticised my handover in front of four colleagues. I recall the phrase useless again, but I am not certain of the complete sentence. I asked which information was missing. The supervisor said we would discuss it later. I wrote this note at lunchtime.

A separate paragraph could explain that no later discussion took place that day, identify the relevant handover document and record a follow-up request. That is more useful than writing that the supervisor always humiliates you. It supplies a date, context and information an investigator can test while preserving the limits of your memory.

Separate fact, impact and interpretation

Your feelings are relevant to explaining impact, but they are different from observable events. You can record that you felt anxious and found it difficult to concentrate after a meeting. That does not establish another person’s intention or a medical diagnosis. Keep each part clear so the reader knows what kind of statement it is.

If you suspect a pattern, explain the connection and refer to individual entries. For example, note that three public criticisms concerned tasks for which you had asked for clearer instructions. Avoid using every incident as proof of the same conclusion without considering differences or explanations.

Link supporting evidence without altering originals

Give each relevant item a simple reference, such as email 03 or rota 02. Record its date, source and what it shows. Preserve the original where you are entitled to retain it. If you create a redacted or annotated copy, label it so it cannot be confused with the original.

Do not gather unrelated confidential information or enter accounts you are not authorised to access. If a relevant document remains with the employer, note where it can be found and ask the investigator to preserve it. You can identify evidence without taking possession of every record yourself.

Record follow-ups and corrections

Include the date you reported an incident, who received it and what response was given. Add agreements, updates and improvements as well as further problems. A record that only includes negative events may omit context needed to understand whether a remedy worked.

If you discover an error, correct it transparently. For example, add that a meeting date was checked against your calendar and changed from the original approximation. Do not disguise a later reconstruction as a note written at the time. Explaining a correction is more credible than pretending your first recollection was exact.

Keep the record proportionate and accessible

Use short paragraphs and plain headings. If writing is difficult, begin with brief prompts and expand only where needed. Avoid putting sensitive material in a location shared with colleagues or family without considering access. Use appropriate account and device security and understand the service you choose.

Before sharing, decide what the recipient needs. An investigator may need a focused timeline and evidence index rather than all your private reflections. Keep a copy of the version you submit and a record of the recipient and date. Check that any exported report contains the intended period and supporting references.

Turn the diary into a clear next step

Review the entries for a small number of themes: unclear instructions, personal remarks, exclusion or retaliation concerns. Use the strongest examples in your complaint and attach the wider chronology where useful. Ask for investigation and practical changes rather than assuming the diary itself decides the outcome.

If a legal claim may be relevant, get advice and check deadlines independently. Do not wait until you have a large diary. One serious incident can matter, and an internal record does not stop time running. Documentation should support a decision about what to do next, not postpone it indefinitely.

Frequently asked questions

Can I start a diary weeks after the incidents? Yes. Label the entries as retrospective, say when you wrote them and explain how dates were checked. Do not backdate the creation of the account.

Should I include positive developments? Yes. Agreements, explanations and improvements help show the whole sequence and whether the employer’s response worked.

Does a dated diary guarantee HR will believe me? No. It can help present your account clearly, but the employer must consider the available evidence and other accounts fairly.

Sources and scope

Guidance checked on 25 October 2026. This article covers England, Wales and Scotland. Northern Ireland has different employment laws and procedures; check the Labour Relations Agency guidance. Examples are fictional. Laws and procedures can change, so check the linked guidance and get advice about your circumstances.

• Acas: investigations and evidence
• GOV.UK: raising grievances
• Acas: keeping a record of bullying
• Acas: current tribunal time limits
• Northern Ireland: Labour Relations Agency

Dealing with something similar at work?

EviDiary helps you organise workplace incidents, notes and supporting evidence into a dated timeline. You can prepare a report using the features available on your plan. Start with the facts you remember and label any uncertainty; a diary does not independently verify an allegation or guarantee a legal outcome. EviDiary helps you document what happened and does not replace independent legal advice.

• Open EviDiary and start documenting
• Compare EviDiary plans and report features