Text messages as evidence in a workplace or HR dispute: how to keep and present them

By Kayabyte · Last updated 11 November 2026

Short answer: keep every message on the phone, make a backup of it, and export the whole conversation with the date, time and sender on every message before you send anything to HR, a union rep, an agency or a lawyer. Choose the messages that matter, but keep the full thread and the original phone. Check deadlines early. This is general information, not legal advice, and workplace rules differ by country and employer. Ask a lawyer, a union representative or a free advice service.

Texts from a manager or colleague can matter in a grievance, a complaint to a labour agency, or a claim: instructions given over text, comments you reported, schedule changes, a warning that was never put in writing. HR and lawyers read these carefully, so how they look matters.

Do first

Do not delete the messages, the thread or the contact, even messages you wish you hadn’t sent. Turn off anything that removes old messages (see the Keep Messages setting).
Write down dates and what happened around each message, in a separate note: who was there, what was said in person, what you did next.
Don’t edit, crop or retype anything you may hand over.
Think before replying to a message about the dispute. A lawyer or union rep can advise on what to say.
Check any deadline now. In the United States, the EEOC page on filing a charge says the 180-calendar-day filing deadline is extended to 300 calendar days when a state or local agency enforces a law against employment discrimination on the same basis (checked 11 November 2026). Other kinds of claims and other countries have their own time limits, so ask early.

What to put with a complaint

In the UK, Acas says a written grievance should include what it is about, any supporting evidence (it gives a payslip or an employment contract as examples) and what you want your employer to do about it (Acas, Step 2: raising a formal grievance, page last updated 21 May 2024, checked 11 November 2026). Messages are one kind of evidence you can attach. The page does not say which kinds of evidence to include, so choose with whoever is advising you.

Choosing which messages to include

The messages that show the point, with a few messages of context before and after, so nobody can say you cut the sentence in half.
A clear date range if the problem is a pattern, not one message.
Photos and screenshots your colleague sent, next to the message they came with.
Not the whole phone. Private messages about other people don’t belong in a work complaint. Redact what is not relevant, and tell the reader what you removed.

Your employer, an agency or a court may ask for the rest of the conversation, so keep the complete thread and the original phone.

What a good copy shows

The date, time and sender (phone number or email) on every message, in order.
The whole conversation, or a clearly marked excerpt with context.
Page numbers, so a page can be referred to (“Page 3 of 41”).
A note of where the messages were read from.

Screenshots crop context, often show a contact name instead of a number, and may not show a date and time on every message. A long thread becomes hundreds of images.

Steps with Exhibitly

Exhibitly is a Mac app we make. It reads an iPhone backup made in Finder (encrypted backups too, using your own backup password), the Messages app on your Mac, or a WhatsApp chat export, and writes a numbered PDF, an Excel file with one row per message, and the original attachments. It works offline and nothing is uploaded.

Make an iPhone backup in Finder: see how to make an iPhone backup on a Mac.
Open Exhibitly and pick the conversation. Choose the whole thread, a date range, or excerpts with context.
Look through the preview. Redact anything that should not go to the reader, such as another person’s address. Redaction is kept on your Mac.
Export. The PDF shows date, time and sender on every message, with page numbers and photos inline. The export also holds the Excel file, the original attachments with SHA-256 fingerprints, SHA256SUMS.txt and a verification page that says which source was read.
Keep the phone, the backup and the export folder untouched. Send a copy to HR, your rep or your lawyer.

The free preview has every feature but exports only the first 15 messages and marks the PDF “PREVIEW, NOT FOR FILING”. Personal is USD 39 once; Evidence Bundle (Bates numbers, exhibit cover page, merging iPhone and Mac) is USD 69 once. macOS 15 or later.

What Exhibitly cannot do: it can’t recover deleted messages, it doesn’t read Android SMS or Android backups, and it doesn’t prove messages are genuine or decide what an employer, agency or court accepts. A WhatsApp export file is a text file, and edits made to it before import cannot be detected; Exhibitly records its SHA-256 when it reads it.

Download Exhibitly (free preview)

Questions

Can I use messages on a work phone or work chat? That depends on your employer’s rules and the law where you live. Ask a lawyer or union rep before copying anything from a work system. Exhibitly reads iPhone backups, Messages on your Mac and WhatsApp exports.

Will HR accept a PDF? HR decides how it handles a complaint. A numbered PDF with date, time and sender is easier to read than screenshots. A PDF doesn’t prove the messages are genuine, so keep the phone.

Can I send only the worst messages? You can use excerpts, but the other side can usually ask for the rest. A clearly marked excerpt with context is easier to defend than a collage.

What about messages that were deleted? Exhibitly can’t recover deleted messages. Check Recently Deleted in Messages and your older backups, and ask a professional if recovery matters.