How to Write a Flexible Working Letter in the UK (2026 Guide)
15 August 2026
Learn how to write a flexible working letter in the UK. Includes a step-by-step guide, sample template, and legal rights under the 2024 rules.
Understand Your Legal Right to Request Flexible Working
Since 6 April 2024, every UK employee has the legal right to request flexible working from day one of their job. There is no minimum service requirement. You can make up to two formal requests in any 12-month period. Your employer must deal with your request in a reasonable manner and can only refuse for one of the eight business reasons set out in law. The ACAS Code of Practice on flexible working requests sets out the steps employers should follow. Knowing your rights before you write your letter ensures you use the correct language and frame your request confidently, putting you in a stronger position to reach a positive outcome.
What to Include in Your Flexible Working Letter
A formal flexible working letter should include your full name and address, the date, and your employer's details. State clearly that you are making a statutory flexible working request under Section 80F of the Employment Rights Act 1996. Describe the change you want — whether that's a shift pattern, compressed hours, remote working, or a combination. Specify the proposed start date and explain how the change might affect your role and how you intend to manage any potential impact. It's also wise to mention how the new arrangement could benefit the business, such as increased productivity or better cover for customers.
How to Write Your Letter: Step-by-Step
Begin by addressing the letter to your line manager or HR department. Confirm your employment details and job title. Then make your request in a straightforward sentence, e.g., "I am writing to formally request a flexible working pattern." Set out your current hours and the exact change you're seeking. Include a clear justification if appropriate, but remember you don't need to give a reason. Explain how your work will continue to be completed, and offer to discuss alternatives. End with a professional closing and your signature. Keep the letter to one page if possible, using clear headings or bullet points for readability.
Sample Flexible Working Letter (UK Template)
Dear [Manager's Name], I am writing to make a formal flexible working request under the Employment Rights Act 1996. I have been employed as [job title] since [start date]. I currently work [hours/pattern]. I would like to change my pattern to [e.g. work 9am to 2pm Monday to Friday], starting from [date]. This change will allow me to [brief reason, e.g., improve my work-life balance or reduce commuting]. I believe this arrangement can work well because [explain how you'll maintain performance]. I am happy to discuss alternatives and can be contacted at [email/phone]. Thank you for considering my request. Yours sincerely, [Your name]
What Happens After You Submit Your Request
Once your employer receives your letter, they must respond within two months. They can accept the request outright, agree to a modified version, or refuse it, but only for a valid business reason. If they refuse, they must explain their decision in writing and set out the business grounds. You have the right to appeal a refusal, and your employer should arrange an appeal hearing. ACAS advises employers to act promptly and fairly. If your employer fails to respond or handles your request unreasonably, you may raise a grievance or claim to an employment tribunal. Keep a copy of your letter and any correspondence as evidence.
FAQ
Yes. Since 6 April 2024, you have a statutory right to request flexible working from your first day of employment. There's no minimum service requirement. You can make up to two statutory requests in any 12-month period, and your employer must handle each request in a reasonable manner.