Workplace policies every UK employer needs
Reviewed by Mellow Editorial Team, HR & payroll content team
Most UK employers are legally required to have certain written policies in place, and others — while not strictly mandatory — carry real risk if they are absent. Getting the basics documented protects both the business and its people.
Policies you are legally required to have in writing
UK employment law mandates a handful of documents from day one of employment.
Written statement of particulars. Under the Employment Rights Act, employees and workers must receive a written statement of their key terms on or before their first day. This covers pay, hours, holiday entitlement, notice periods, job title and location. It is not a policy as such, but it sits at the foundation of everything else.
Disciplinary and grievance procedures. The Acas Code of Practice on disciplinary and grievance procedures has statutory weight. Employers must have a written procedure and share it with employees. Tribunals can adjust any compensation award — upward or downward — if either party unreasonably fails to follow the Code. The procedure does not need to be complex, but it must be written down and consistently applied.
Health and safety policy. If you employ five or more people, you are legally required to have a written health and safety policy. It should cover your general statement of intent, who is responsible for what, and the practical arrangements in place. Employers of any size have a duty of care, but the written document becomes mandatory at that five-person threshold.
Policies that are not always mandatory but carry significant risk if absent
Several policies sit in a grey area: no single law demands them as standalone documents, but their absence creates liability in practice.
Equal opportunities and anti-discrimination policy. The Equality Act 2010 protects employees from discrimination on nine protected characteristics. Having a clear written policy — and training staff on it — strengthens your defence if a claim is brought and demonstrates that the organisation takes its obligations seriously.
Anti-harassment and bullying policy. The Worker Protection (Amendment of Equality Act 2010) Act 2023 placed a proactive duty on employers to prevent sexual harassment in the workplace. That duty is difficult to demonstrate without a written policy, reporting process and evidence of communication to staff.
Data protection and privacy policy. The UK GDPR and the Data Protection Act 2018 require you to be transparent about how you collect and process personal data. A staff privacy notice (covering employee data) and an acceptable-use policy for company systems are both practical necessities, not optional extras.
Sickness absence policy. Statutory Sick Pay applies once eligibility thresholds are met, but your policy should also set out how employees notify you of absence, what evidence you may request, and how long-term absence is managed. Without it, inconsistent treatment can lead to discrimination or unfair dismissal claims.
Holiday policy. Employees are entitled to 5.6 weeks of statutory annual leave (28 days including bank holidays for a full-time five-day week). Your policy should explain how leave is requested and approved, how it carries over, and what happens to untaken leave on termination. The rules around carry-over changed after the post-Covid case law; make sure your policy reflects current practice.
Policies that reflect evolving workplace expectations
Employment law does not stand still. The Employment Rights Act 2025 strengthened day-one rights in several areas, and workforce expectations around flexible working have shifted considerably.
Flexible and hybrid working policy. Employees now have the right to request flexible working from day one of employment. You are not obliged to agree to every request, but you must handle requests in a reasonable and timely way. A written policy sets out the process clearly and reduces the risk of claims that requests were ignored or handled inconsistently.
Menopause policy. While not a legal requirement, ACAS guidance and tribunal case law have made clear that failing to support employees experiencing menopause symptoms can give rise to disability discrimination or sex discrimination claims. A short, practical policy — or a section within your absence or wellbeing policy — signals that the issue is taken seriously.
Keeping policies current and accessible
A policy written three years ago and buried in a shared drive is worth little in a tribunal. A few practical steps make the difference.
Write policies in plain English. If employees cannot understand them, they cannot follow them. Review each policy at least annually and whenever relevant law changes — 2025 and 2026 have brought enough legislative movement to warrant a full audit if you have not done one recently. Date each version so it is clear what was in force at any given time.
Ensure employees can actually access the policies, whether through an intranet, a handbook or a document shared at onboarding. Acknowledge receipt where possible. And apply policies consistently — selective enforcement is one of the most common ways that otherwise sound procedures unravel at tribunal.
This article is general information only, not legal advice. For guidance specific to your circumstances, consult an employment solicitor or qualified HR adviser.
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