Flexible Working Claim Limitation Period Rules in the Employment Tribunal

Flexible working rights in the UK allow eligible employees to request changes to their working pattern, such as remote working, part-time hours, or adjusted start and finish times. Employers must handle these requests in a reasonable manner and within statutory time limits.

When an employer fails to follow the correct process or rejects a request unlawfully, an employee may bring a claim to the Employment Tribunal. These claims are subject to strict limitation periods, meaning they must be submitted within a defined timeframe or they may be rejected.

Legal Framework for Flexible Working Claims

Flexible working rights are set out in the Employment Rights Act 1996, as amended by later legislation, including reforms expanding eligibility and strengthening procedural requirements for employers.

An employee can bring a tribunal claim where an employer has:

• Failed to deal with a flexible working request in a reasonable manner
• Failed to notify the employee of the decision within the statutory time limit
• Refused a request based on incorrect facts
• Rejected a request for reasons not permitted by law
• Failed to follow the required procedure for reconsideration or appeal

Employment Tribunal claims typically focus on whether the employer complied with the statutory process rather than whether the employee's preferred working arrangement is reasonable.

Time Limit for Flexible Working Claims

Standard Limitation Period

The general time limit for bringing a flexible working claim is:

• 3 months minus 1 day from the date of the employer's decision or failure to act

This includes situations where:

• The request is refused
• The employer fails to respond within the statutory decision period
• An appeal or reconsideration is not handled correctly

The limitation period is strict and applies regardless of ongoing internal discussions or grievance procedures.

When the Time Limit Starts

The starting point depends on the type of employer breach.

1. Refusal of a Flexible Working Request

Where an employer refuses a request:

• Time runs from the date the employee is notified of the refusal

This is usually the date of the written decision.

2. Failure to Respond Within Statutory Time Limits

If the employer does not respond within the statutory period:

• Time runs from the date the response should have been provided

This is treated as a procedural breach.

3. Procedural Failures (Including Appeals)

Where the employer fails to:

• Consider the request properly
• Follow the required process
• Handle an appeal fairly or within time

The limitation period runs from the date of that procedural failure.

In some cases, multiple procedural failures may create uncertainty over the exact start date, particularly where the process is ongoing.

ACAS Early Conciliation and Time Limits

Before a flexible working claim can be submitted to the Employment Tribunal, the claimant must notify ACAS and go through Early Conciliation.

Effect on Time Limits

• The limitation period is paused during ACAS Early Conciliation
• Time resumes when ACAS issues a certificate
• The remaining time is added to the deadline

This ensures that claimants are not disadvantaged by the conciliation process, but it does not extend time indefinitely.

Important Practical Point

If ACAS is contacted after the limitation period has already expired, the claim will normally remain out of time unless the tribunal exercises discretion.

Continuing Issues and Repeated Requests

In some workplaces, employees submit multiple flexible working requests or experience repeated procedural failures.

Possible Continuing Breach

A tribunal may consider whether there is a continuing pattern of non-compliance, such as:

• Repeated failure to consider requests properly
• Ongoing refusal to engage with statutory requirements
• Systematic delays in decision-making

If a continuing breach is established, the limitation period may run from the last act in the series.

However, tribunals assess this strictly. Separate requests are often treated as separate claims with their own time limits.

Internal Appeals and Grievances

Employees often challenge a refusal through internal appeal or grievance procedures.

Key rule:

• Internal procedures do not extend or pause the tribunal time limit

Even if an appeal is ongoing, the 3-month minus 1 day deadline continues to run.

This is one of the most common reasons flexible working claims become out of time.

Tribunal Discretion to Extend Time

Employment Tribunals have limited discretion to extend time where it is “just and equitable” to do so, although this is not automatic.

Factors Considered

Tribunals may assess:

• Length of the delay
• Reason for the delay
• Whether the employee acted promptly once aware of the issue
• Availability of evidence
• Prejudice to both parties

Extensions are applied cautiously, particularly where delays are significant or unexplained.

Remedies in Flexible Working Claims

Unlike some discrimination claims, flexible working claims are more limited in scope.

A tribunal may:

• Make a declaration about the employer's breach
• Order reconsideration of the request
• Award limited compensation (typically capped)

The focus is usually on procedural compliance rather than forcing a specific working arrangement.

Common Time Limit Issues

1. Misunderstanding the Trigger Date

A common issue is confusion over when time starts running, particularly where:

• The employer delays a decision
• The employee continues informal discussions
• The refusal is communicated verbally before being confirmed in writing

The limitation period normally begins when the employee is formally notified or when the statutory deadline expires.

2. Multiple Flexible Working Requests

Each request is treated separately for limitation purposes. A new request does not restart the time limit for earlier decisions.

3. Ongoing Employment Relationship

Employees often remain in employment while pursuing a claim. This does not affect limitation rules. The deadline continues to apply during ongoing employment.

Consequences of Missing the Time Limit

If a flexible working claim is submitted late:

• The tribunal may reject it outright
• The respondent may apply to strike out the claim
• The claimant must rely on the tribunal's discretion to extend time
• Even strong procedural breaches may not be considered

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

Practical Summary

• Flexible working claims must usually be brought within 3 months minus 1 day
• Time runs from the employer's refusal, failure to respond, or procedural breach
• ACAS Early Conciliation pauses the limitation period
• Internal appeals and grievances do not extend time limits
• Continuing breaches may affect the start date but are narrowly interpreted
• Tribunals may extend time only where it is just and equitable

Final Thoughts

Flexible working claim time limits are short and strictly enforced. While the law provides a structured right to request flexible working arrangements, tribunal claims depend heavily on procedural compliance and timely action. Identifying the correct trigger date and ensuring ACAS Early Conciliation is initiated within the limitation period are essential steps in preserving the right to bring a claim.