UK Employment Law: What Small Business Owners Must Know
Employment law can feel overwhelming when you're running a small business. This guide breaks down your legal obligations into practical, actionable steps. We'll cover what you must do, common pitfalls to avoid, and how to stay compliant without getting bogged down in legal complexity.
Core Legal Obligations
Minimum Wage & Pay Requirements
The National Minimum Wage isn't just about the hourly rate — it's about getting the calculations right. As of April 2026, the National Living Wage (21+) is £12.21 per hour.
Current Rates (April 2026):
- • 21 and over: £12.21 per hour
- • 18-20: £10.18 per hour
- • Under 18 and apprentices: £7.55 per hour
Watch out for: Unpaid training time, uniform costs, and travel between sites can push pay below minimum wage. HMRC can investigate up to 6 years back and publicly name non-compliant employers.
Penalties: Up to 200% of arrears owed (max £20,000 per worker) plus the back pay itself.
Holiday Entitlement
All workers are entitled to 5.6 weeks (28 days) paid annual leave, pro-rated for part-time workers. This can include bank holidays if stated in the contract.
Calculating Holiday Pay:
- • Regular hours: Normal daily/weekly pay
- • Variable hours: Average of previous 52 paid weeks
- • Commission/overtime: Must be included in holiday pay calculations
Recent case law means you must include regular overtime, commission, and bonuses in holiday pay calculations. Getting this wrong is one of the most common sources of employment tribunal claims.
Auto-Enrolment Pensions
You must automatically enrol eligible employees into a workplace pension scheme and contribute at least the minimum amounts. This applies from your first employee.
Who's Eligible:
- • Aged 22 to State Pension age
- • Earning over £10,000 per year
- • Working in the UK
Minimum Contributions:
- • Employer: 3% of qualifying earnings
- • Employee: 5% (includes tax relief)
- • Total: 8%
The Pensions Regulator takes non-compliance seriously. Fines start at £400 and can escalate to £10,000 per day for persistent non-compliance.
Right-to-Work Checks
You must check every employee has the right to work in the UK before they start. This applies to all workers, regardless of nationality or how 'obviously British' they appear.
How to Check:
- • Online: Use the Home Office online checking service (for those with digital immigration status)
- • Manual: Check original documents in person, take copies, and record the date
- • Follow-up: Diarise expiry dates and recheck when required
Penalties: Up to £45,000 for a first breach (per illegal worker) and £60,000 for repeat breaches. You'll have a defence if you can prove you conducted proper checks.
Dismissal & Disciplinary Procedures
Fair Dismissal Process
Dismissing someone incorrectly is expensive. The average unfair dismissal award is £13,500, but can reach £115,115 (or a year's pay if higher in discrimination cases).
The Five Fair Reasons for Dismissal:
- Capability (performance or ill-health)
- Conduct (misconduct or gross misconduct)
- Redundancy (job no longer exists)
- Statutory restriction (e.g., driver loses licence)
- Some other substantial reason (SOSR)
Even with a fair reason, you must follow a fair process. This means:
- →Investigating properly before taking action
- →Holding a formal meeting (with right to be accompanied)
- →Considering alternatives to dismissal
- →Providing a right of appeal
Note: Employees with less than 2 years' service can't usually claim ordinary unfair dismissal, but can still claim for discrimination, whistleblowing, or automatically unfair reasons. Always follow proper procedures.
Key Compliance Deadlines
Day 1 of Employment
Right-to-work check, contract/written statement, employee added to PAYE
Within 2 Months
Full written statement of employment particulars
Within 3 Months
Auto-enrolment assessment and enrolment if eligible
Ongoing
Payroll submissions, pension contributions, holiday accrual tracking, annual pay reviews against minimum wage
Useful Resources
ACAS
Free, impartial advice on workplace rights, rules and best practice. Excellent guides on disciplinary procedures and settlement agreements.
GOV.UK Employment Section
Official government guidance on all aspects of employment law, including calculators for statutory pay and step-by-step guides.
The Pensions Regulator
Everything you need to know about auto-enrolment, including step-by-step guides and deadline calculators.
Health & Safety Executive
Guidance on workplace health and safety obligations, risk assessments, and industry-specific requirements.
Stay Compliant Without the Complexity
Let Small HR handle your employment law compliance. Templates, reminders, and guidance designed specifically for UK small businesses.
Get Compliance Support