Flexible Working Requests: A Legal Guide for UK Employers (2026)

One of the most significant, and least discussed, changes introduced by the Employment Relations (Flexible Working) Act 2023 is the extension of the right to request flexible working to day one of employment. This new right affects all employees regardless of length of service and came into effect in April 2024. This article explains how the right works in practice, what the process requires of employers, and what the consequences are for businesses that fail to engage.

What This Means for UK Employers

The right to request flexible working has moved from a perk to a fundamental statutory entitlement from the first day of employment. For UK employers, understanding the legal framework is no longer just a matter of compliance; it is about talent retention and mitigating the risk of costly employment tribunal claims.

1. The Legal Framework and Statutory Time Limits for Flexible Working

The Employment Relations (Flexible Working) Act 2023 and subsequent regulations have streamlined the process for employees whilst tightening the requirements for employers.

• Day One Right: employees can submit a formal application from their very first day of employment, without any qualifying period of service.
• Two requests per year: employees may make two formal requests in any 12-month period.
• The two-month rule: employers must provide a final decision, including the outcome of any appeal, within two months of receiving the request, unless an extension is mutually agreed in writing.
• Mandatory consultation: before a refusal, employers must consult with the employee to discuss the proposal and explore potential alternatives. A paper refusal alone is a breach of statutory procedure.

2. What Employers Cannot Do: Common Legal Pitfalls

Whilst employers retain the right to manage their business, their discretion is not absolute. The following are procedural breaches that regularly give rise to tribunal claims.

• Flat refusal without consultation: failing to hold a meeting with the employee before refusing the request is a breach of the statutory procedure.
• Ignoring the deadline: failure to conclude the process within two months can lead to a tribunal award of up to eight weeks' pay.
• Indirect discrimination: even a procedurally compliant refusal can generate an Equality Act 2010 claim if it disproportionately affects employees sharing a protected characteristic, such as women with childcare responsibilities or disabled employees.

3. Lawful Grounds for Refusing a Flexible Working Request

The law provides only eight statutory grounds on which an employer may refuse a flexible working request. A refusal based on any other reason will be unlawful.

• The burden of additional costs.
• An inability to reorganise work amongst existing staff.
• An inability to recruit additional staff.
• A detrimental impact on quality.
• A detrimental impact on performance.
• A detrimental impact on ability to meet customer demand.
• Insufficient work during the periods the employee proposes to work.
• Planned structural changes.

When refusing, employers must clearly identify which statutory ground applies and provide a factual summary explaining why that ground applies to the specific role.

4. How to Document Flexible Working Decisions Safely

Documentation is the primary defence in an employment tribunal. Inadequate records, even where the substantive decision was sound, frequently result in awards against employers.

• Acknowledge in writing: confirm receipt of the request immediately and record the two-month deadline.
• Minutes of consultation: keep detailed records of the consultation meeting, including any alternative arrangements discussed, such as a trial period or partial approval.
• The decision letter: state the applicable statutory ground clearly and provide the business evidence supporting that ground.
• The appeal process: whilst not a standalone statutory requirement, the ACAS Code of Practice strongly recommends offering an appeal. Documenting the appeal process demonstrates that the employer acted reasonably.

Why This Matters in Practice

• Tribunal awards, failure to conclude the process within two months can result in an award of up to eight weeks' pay.
• Discrimination liability, a refusal that disproportionately affects a protected group can generate an indirect discrimination claim under the Equality Act 2010.
• Procedural breach, a flat refusal without consultation is a breach of statutory procedure, irrespective of whether the underlying business reason was sound.
• Reputational risk, poorly handled flexible working requests damage employee relations and hinder talent retention.

Documentation failure, inadequate records frequently result in tribunal awards even where the substantive decision was justified. 

Why Work with a Specialist Employment Lawyer

Managing flexible working requests requires a careful balance between operational efficiency and legal compliance.

• Draft robust flexible working policies that reflect the current statutory framework.
• Advise on complex requests where the risk of discrimination claims may be elevated.
• Review decision-making processes to ensure procedural compliance and adequate documentation.
• Provide representation or strategic advice where a tribunal claim has been threatened or issued.

Preparing Your Business for Flexible Working Compliance

Businesses should be aware of their obligations under the Employment Relations (Flexible Working) Act 2023 and ensure their processes are compliant now. Ensuring you are ready to manage requests within the two-month statutory deadline is not optional, it is a legal obligation that has been in effect since April 2024.