Victimisation Claim Limitation Period Rules in the Employment Tribunal

Victimisation claims in the Employment Tribunal arise under the Equality Act 2010 and relate to situations where a worker is treated unfavourably because they have made or supported a discrimination complaint, or done another “protected act”. These claims are subject to strict time limits, which determine whether a case can proceed.

The limitation rules are closely aligned with those for discrimination and harassment claims, but they have specific procedural features that can affect how deadlines are calculated, particularly where conduct occurs over time or involves repeated actions.

What Counts as Victimisation Under the Equality Act 2010

Victimisation occurs where a person suffers a detriment because they have carried out a “protected act”.

A protected act includes:

• Making a complaint of discrimination or harassment
• Giving evidence or information in connection with a discrimination complaint
• Alleging that someone has breached equality law
• Supporting another person's discrimination claim

The legal test is whether the treatment is connected to the protected act, not whether the underlying complaint was ultimately successful or well-founded.

Victimisation is treated as a form of unlawful discrimination and is enforceable in the Employment Tribunal.

Primary Time Limit for Victimisation Claims

Standard Rule: 3 Months Minus 1 Day

The general limitation period is:

• 3 months minus 1 day from the date of the victimisation act, or
• 3 months minus 1 day from the last act in a continuing course of victimisation

This time limit applies to claims brought under the Equality Act 2010.

The clock usually starts running from the date the detrimental treatment occurred, such as:

• A disciplinary warning issued after a complaint
• Exclusion from opportunities following a grievance
• Dismissal linked to raising discrimination concerns
• Hostile treatment following a protected act

Tribunals apply this strictly, although extensions may be available in limited circumstances.

Continuing Acts of Victimisation

Victimisation may occur as a series of linked events rather than a single incident. Where this is established, the tribunal may treat it as a continuing act.

Effect on Limitation Period

If there is a continuing act:

• Time runs from the final act in the series
• Earlier incidents can still be included in the claim
• The tribunal considers the overall pattern of conduct

Key Considerations

Tribunals assess whether incidents are sufficiently connected by factors such as:

• Same individuals involved
• Similar behaviour or treatment
• Common underlying motivation linked to the protected act

If the link is not strong enough, each incident may have its own separate limitation period.

ACAS Early Conciliation and Time Limits

Before most Employment Tribunal claims can be submitted, the claimant must notify ACAS for Early Conciliation.

This process affects limitation periods in a significant way.

Pausing the Time Limit

When ACAS is notified:

• The limitation clock is paused while Early Conciliation is ongoing
• Time does not run during this period
• The clock resumes when the ACAS certificate is issued

After the ACAS Certificate

Once the certificate is issued:

• The claimant has the remainder of the original limitation period, plus any paused time
• In practice, there is usually at least a short minimum window to submit the claim after the certificate is received

If ACAS is contacted after the limitation period has already expired, the process does not revive the claim.

Tribunal Discretion to Extend Time

Even if a victimisation claim is out of time, the Employment Tribunal has discretion to allow it to proceed.

“Just and Equitable” Extension

For Equality Act claims, including victimisation, the tribunal may extend time if it is just and equitable to do so.

Factors considered include:

• Length of the delay
• Reasons for missing the deadline
• Whether the claimant acted promptly once aware of the issue
• Availability of evidence and witness reliability
• Prejudice to the respondent

This discretion is broad but applied cautiously. The burden is on the claimant to justify the delay.

Interaction with Internal Grievances

A common misunderstanding is that internal workplace processes affect time limits.

Key rule:

• Internal grievances, appeals, or investigations do not stop or extend the limitation period

The tribunal time limit continues to run regardless of ongoing internal procedures.

Common Scenarios Affecting Limitation Calculations

1. Dismissal Following a Protected Act

If dismissal is the alleged victimisation:

• The time limit usually runs from the effective date of termination
• This is often the last day of employment or notice expiry

2. Ongoing Workplace Treatment

If the victimisation continues (for example ongoing exclusion or repeated disciplinary actions):

• The tribunal may treat it as a continuing act
• The limitation period may extend to the final incident

3. Delay in Realising Victimisation

The limitation period is generally not extended simply because the claimant only later understood the treatment as victimisation.

Consequences of Missing the Time Limit

If a victimisation claim is submitted late:

• The tribunal may strike it out
• The respondent can apply for dismissal of the claim
• The claimant must rely on “just and equitable” extension arguments
• Evidence may become harder to rely on due to delay

Strict enforcement of limitation periods is common in Employment Tribunal proceedings.

Practical Summary

• Victimisation claims must usually be brought within 3 months minus 1 day
• Time runs from the act or last act in a continuing course of victimisation
• ACAS Early Conciliation pauses the limitation period if started in time
• Internal grievance procedures do not affect deadlines
• Tribunals may extend time only if it is just and equitable
• Late claims face a significant risk of being rejected

Final Thoughts

The limitation period for victimisation claims is short and strictly applied. While the Equality Act 2010 allows some flexibility through continuing act arguments and discretionary extensions, the standard expectation is that claims are issued promptly. Accurate identification of the last act of victimisation and timely use of ACAS Early Conciliation are critical to preserving a claim.