WorkDisputes Logo
Back to guides

Tribunal process

Submitting an ET1 claim

A practical guide to filing a tribunal claim once ACAS Early Conciliation ends.

Last updated 8 February 2026

Overview

An ET1 is the form used to start a claim in the Employment Tribunal.

You usually must complete ACAS Early Conciliation before you file.

Before you file

  • Confirm your ACAS certificate number and dates.
  • Check the limitation date to avoid an out of time claim.
  • Identify the legal name of the employer or respondent.
  • Decide which claims you are bringing and why.

What the form asks for

  1. 01

    Parties

    Your details and the correct legal name of the employer.

  2. 02

    Employment facts

    Dates, job title, pay, and when the issue happened.

  3. 03

    Claim details

    A clear summary of what happened in date order.

  4. 04

    Remedy

    What you want the tribunal to award or order.

Common mistakes

  • Missing the deadline or guessing the dates.
  • Naming the wrong legal entity as the respondent.
  • Writing a long narrative without a clear timeline.
  • Forgetting to include the ACAS certificate number.

Common questions

Are there tribunal fees?

No, there are currently no fees to submit an ET1.

Can I amend the ET1 later?

Yes, but you may need permission and it can cause delay.

Can I submit online?

Yes, most claims are filed through the tribunal online service.

Next steps

Keep your facts organised and protect your time limits with the tools below.

Start case check

Sources