Missing the ET3 deadline: when can a respondent still defend an Employment Tribunal claim?

The practical trap

Employment Tribunal papers are not ordinary correspondence. When a respondent receives a claim, the response deadline matters.

The usual position is that the respondent must present the ET3 within 28 days of the date the tribunal sent the copy of the claim form. That date should be checked against the tribunal’s notice. It should not be guessed from when the papers were opened, forwarded internally, or first read by the right person.

If the response is in time and accepted, the respondent can defend the claim in the ordinary way.

If the response is late, the position changes. The respondent is no longer simply “sending in the ET3”. They are asking the tribunal to permit a late response. That is a different procedural position.

A late ET3 is not automatically accepted

A common mistake is to assume that the tribunal will accept a late ET3 if the respondent explains the delay.

That is unsafe.

The current rules provide for rejection of a late response. The important qualification is that the tribunal should not reject the late response while an application for an extension of time is pending, or where the response includes or is accompanied by that application.

That distinction matters. A late ET3 sent on its own may be rejected. A late ET3 sent with a proper application for an extension of time puts the tribunal in a different position. The tribunal then has to decide whether time should be extended.

That does not mean the application will succeed. It means the correct procedural route has been engaged.

Asking for more time before the deadline expires

If the respondent knows before the deadline that they cannot file the ET3 in time, the safer course is to ask for more time before the deadline expires.

The application should be made in writing. It should explain why more time is needed. It should be made promptly. The respondent should not assume that time has been extended unless the tribunal says so.

A pre-deadline application is usually procedurally cleaner. There has not yet been a failure to comply with the response deadline. There may be less disruption. The tribunal can decide whether a short extension is justified before the case moves into late-response territory.

That is very different from waiting until the deadline has passed and then trying to repair the problem afterwards.

Asking for more time after the deadline expires

Once the deadline has expired, the respondent needs to treat the position as urgent.

A post-deadline application for an extension of time should explain why the deadline was missed. It should normally be accompanied by a draft response, unless there is a real reason why that cannot be done. It should also say whether the respondent wants a hearing of the application.

The draft response matters because the tribunal is not just being asked to forgive lateness in the abstract. It is being asked to allow the respondent into the proceedings. The tribunal may need to understand what defence is actually being advanced.

A short apology is unlikely to be enough. A proper application should address the delay, the reason for it, what has been done to correct it, the effect on the claimant, and whether there is a real proposed defence.

What the tribunal may consider

The question is not governed by a simple checklist. The tribunal has a broad discretion.

In practical terms, the recurring questions are likely to include why the ET3 was late, how long the delay was, how quickly the respondent acted once the problem was discovered, whether a draft response has been provided, whether the proposed response shows a real defence, and what prejudice each side would suffer depending on the outcome.

Those issues are fact-sensitive. No single factor should be treated as automatically decisive.

A short delay may still need a proper explanation. A long delay may be difficult to justify. A weak explanation may be helped by a strong proposed defence and limited prejudice, but it may not be. A bare denial or unclear proposed defence may make it harder to justify extending time.

Employment Tribunal deadlines apply to represented and unrepresented parties. Ignorance of the rules, internal delay, HR oversight or administrative disorganisation may be considered, but they are not a free pass. The respondent still needs to give a proper explanation and act promptly.

What if the ET3 has already been rejected?

A rejected response creates another procedural distinction.

If the response has been rejected, the respondent may need to consider whether to challenge that rejection. Under the current rules, Rule 20 deals with reconsideration of rejection of a response. That is not the same as reconsideration of a judgment.

This distinction matters because “reconsideration” can mean different things depending on what is being reconsidered.

If the tribunal rejected the ET3 because it was late, and the respondent says time should be extended, the extension route remains central. If the respondent says the rejection decision itself was wrong, Rule 20 may be relevant. The correct route depends on the order, notice or judgment that has actually been issued.

A respondent should not send a general email asking the tribunal to “reconsider everything” without identifying the decision being challenged and the basis for the application.

What if judgment under Rule 22 has already been issued?

If no response has been presented in time, or a response has been rejected and there is no outstanding reconsideration of that rejection, the tribunal may move to judgment under Rule 22.

This is serious. Rule 22 is not just an administrative label. It can mean the tribunal decides the claim on the available material without the respondent having an accepted ET3.

But careful language matters. A judgment under Rule 22 is not always the same as saying that every possible issue, including remedy, has been finally determined in full. The tribunal must consider what can properly be decided on the available material. Sometimes a further hearing may still be needed, especially on remedy.

There is also an important rule-based consequence. If the respondent later obtains an extension of time for presenting the response, any judgment issued under Rule 22 must be set aside and the restriction on participation under Rule 22 ceases to have effect.

That does not mean the respondent can ignore Rule 22. It means the respondent must use the correct route quickly and properly.

Judgment reconsideration is a separate route

Under the current rules, reconsideration of a judgment is dealt with separately from reconsideration of rejection of a response.

This is a key point. Rule 20 concerns reconsideration of rejection of a response. Rules 68 to 70 concern reconsideration of judgments.

Those are not the same thing. The correct application depends on the procedural step that has already happened.

Can the respondent take part in a remedy hearing?

If there is no accepted ET3, the respondent does not have the ordinary right to defend the claim as though a response had been accepted.

However, that does not necessarily mean the respondent disappears entirely from the process.

Where a judgment has been entered but a remedy hearing is needed, the respondent may be allowed to participate only to the extent permitted by the tribunal. That may be a limited role. It may be confined to remedy. It is not the same as being allowed to defend liability.

For claimants, this means a missed ET3 is a serious procedural advantage, but it should not be assumed that every later issue will be uncontested.

For respondents, it means that limited participation is not a substitute for getting the ET3 accepted. The safer objective is to regularise the response position if there is a proper basis to do so.

Practical steps

The Legal Lens point

A missed ET3 deadline is not a minor procedural slip. It can lead to rejection of the response, judgment under Rule 22 and loss of ordinary participation rights.

But it is not always the end of the respondent’s procedural options.

The practical question is route, timing and evidence.

Was the response late? Was an extension application made? Was the ET3 rejected? Has judgment under Rule 22 been issued? Is the respondent asking for more time, reconsideration of rejection, or reconsideration of a judgment?

Those distinctions matter.

For respondents, the lesson is simple: act quickly, use the correct rule, provide the draft response, and give a proper explanation.

For claimants, the lesson is equally important: a missed ET3 deadline is powerful, but the tribunal still controls what happens next.