UK Employment Rights: Redundancy, Leave, Contracts and Workplace Protections

Can I Request Flexible Working from Day One of My Job UK?

Yes — since 6 April 2024, you can request flexible working from day one of employment. Here's how to make a valid request, what your employer must do, and the grounds for refusal.

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The April 2024 changes make flexible working easier to request — but the right to have your request granted depends on your employer’s business case.

What Changed on 6 April 2024

Before 6 April 2024 From 6 April 2024
Needed 26 weeks’ service Day-one right
1 request per 12 months 2 requests per 12 months
Employer had 3 months to respond Employer must respond within 2 months
No consultation requirement before refusing Must consult employee before refusing

How to Make a Valid Request

Your request must be in writing (email is acceptable) and include:

  1. The date of the request
  2. The change you are requesting
  3. The date you’d like the change to come into effect
  4. Whether you have made a previous flexible working request and, if so, when
  5. How the change might affect your employer and how it could be handled

You do not need to give a personal reason for the request, though some employees choose to include context.

The 8 Grounds for Refusal

Ground Example
Additional costs Requires new equipment or workspace
Customer demand Must be on-site to serve customers
Reorganising existing staff Cannot cover reduced hours across team
Recruiting additional staff Cannot fill the gap without new hire
Quality impact Work quality requires full-time presence
Performance impact Productivity would fall materially
Insufficiency of work Not enough to fill proposed hours
Structural changes Business is about to restructure

After a Refusal

  1. Request a written decision citing the specific ground
  2. Appeal internally using your employer’s appeals process
  3. Consider whether the refusal is indirect discrimination (e.g. disproportionate impact on women with childcare)
  4. Contact ACAS if the process was not followed correctly

What Happens if Your Flexible Working Request Is Refused?

Since April 2024, employers must respond within 2 months. A refusal must be based on one or more of the eight statutory business reasons:

  1. Burden of additional costs
  2. Detrimental effect on ability to meet customer demand
  3. Inability to reorganise work among existing staff
  4. Inability to recruit additional staff
  5. Detrimental impact on quality
  6. Detrimental impact on performance
  7. Insufficiency of work during the proposed hours
  8. Planned structural changes

If you believe the refusal is unreasonable:

  • Appeal internally — you should have an appeal right within the employer’s procedure
  • Raise a grievance if the procedure was not followed correctly (e.g. decision made without a meeting, without proper consideration)
  • Employment tribunal — you can make a claim for failure to follow the statutory procedure; compensation is up to 8 weeks’ pay (capped at £643/week in 2025/26)

If refusal relates to a disability and homeworking or reduced hours would be a reasonable adjustment, the Equality Act provides stronger protection and uncapped compensation.

Sources

  1. GOV.UK — Flexible working
  2. Employment Relations (Flexible Working) Act 2023
  3. ACAS — Flexible working