How to Hire Your First Employee as a Small Business Owner

You’re turning away work. You’re doing admin at midnight. It’s time — but hiring your first employee as a small business owner feels like jumping off a cliff with a parachute you packed yourself. The legal obligations are real, the costs are higher than the salary suggests, and the wrong hire can set you back months. But the right hire transforms your business. Here’s how to do it properly, covering every legal requirement and the practical stuff nobody tells you.

Hire First Employee Small Business: The Legal Checklist

1. Register as an employer with HMRC

Before your employee’s first payday, register as an employer — ideally up to 4 weeks before paying them. HMRC sends your PAYE reference numbers by post. You cannot run payroll without them. Registration is free via GOV.UK’s employing staff guidance, which walks through the whole process.

2. Get employers’ liability insurance (£5m minimum)

Legally mandatory from the moment you employ anyone — even part-time, even temporary. Fines reach £2,500 per day uninsured. Arrange it before the start date, not after. Our small business insurance guide covers this alongside the other covers you’ll need.

3. Check the right to work in the UK

You must verify every employee’s right to work before they start — original documents, checked in their presence (or via the Home Office online service). Get this wrong and fines reach £60,000 per illegal worker. No exceptions, no “they seemed fine.” Check, copy, file.

4. Issue a written statement of employment

Legally required from day one (not after two months, as many believe). It must include: job title and description, pay rate and frequency, hours, holiday entitlement, notice periods, place of work, and disciplinary procedures. Use a proper template — ACAS provides free ones. A handshake deal isn’t just risky; it’s unlawful.

5. Set up payroll (PAYE)

You must deduct Income Tax and National Insurance through PAYE and pay employer NICs (currently 15% on earnings above the threshold — check current rates) on top of the salary. Options:

• Payroll software: Free options exist (HMRC’s Basic PAYE Tools); paid ones (£5–£15/month) integrate with accounting software
• Your accountant: Many run payroll for £15–£30/employee/month — worth it for peace of mind
• Report to HMRC on or before each payday (Real Time Information). Late filing triggers penalties

6. Enrol them in a workplace pension

Auto-enrolment is mandatory for eligible employees (aged 22 to State Pension age, earning over £10,000). You must contribute a minimum of 3% of qualifying earnings; the employee contributes 5%. Choose a scheme (NEST is the government-backed default, free to set up), enrol the employee, and handle opt-outs properly. The Pensions Regulator fines non-compliant employers — this isn’t optional.

7. Pay at least the National Minimum/Living Wage

Check current rates — they rise every April. Under-21s, 21–22s, and 23+ have different rates. Paying below is a criminal offence, and HMRC names and shames offenders publicly. Factor the real rate into your cost calculations, not last year’s.

The TRUE Cost of That First Hire

The salary is just the start. On a £25,000 salary, budget:

• Salary: £25,000
• Employer NICs: ~£3,000
• Pension (3%): ~£700
• Employers’ liability insurance: ~£150
• Payroll costs: £200–£400/year
• Recruitment: £0 (DIY) to £3,000+ (agency)
• Equipment, training, onboarding: £500–£2,000
• Total: ~£29,000–£34,000 — roughly 1.2–1.35× the salary

Rule of thumb: an employee needs to generate 2–3× their total cost in value (revenue enabled or freed-up owner time redeployed profitably) to be a good hire. Hire when you’re consistently turning away profitable work, not when you’re merely busy.

Hiring Well: The Practical Stuff

• Write a real job description: Specific duties, must-have vs nice-to-have skills, working pattern. Vague ads attract vague candidates
• Interview for attitude, train for skill: In small businesses, cultural fit and reliability outweigh marginal skill differences — you can teach systems, not work ethic
• Paid trial shifts (properly paid, properly insured) reveal more than any interview
• Start with a probation period (3–6 months, stated in the contract) — it gives both sides a clean exit if it’s not working
• Plan the first two weeks: New hires without structured onboarding flounder. Write down everything they’ll need in week one

Managing Them (Including the Difficult Moments)

Being someone’s boss is a skill, not an instinct. Set clear expectations early, give regular feedback (not just annual reviews), and address problems promptly — small issues become big ones when avoided. When customer-facing problems arise, our guide on handling difficult customers is useful training material for new team members too.

First Employee FAQs

Can I hire someone part-time or freelance instead?

Yes — and it’s often smarter for the first hire. Part-time employees have the same legal protections (pro-rated), while freelancers/contractors avoid PAYE, pensions and employers’ NICs — but beware IR35-style employment status rules: if they work like an employee, HMRC may treat them as one regardless of what the contract says. Genuine freelancers (multiple clients, own equipment, control over hours) are fine.

What if it doesn’t work out?

Employees with under two years’ service have limited unfair dismissal rights (though discrimination and whistleblowing protections apply from day one). A well-drafted probation clause lets you end the arrangement cleanly if it’s not working. Handle it promptly, fairly and with proper notice — dragging out a bad hire helps nobody.

Do I need HR policies?

At one employee: the written statement, a simple disciplinary/grievance procedure (ACAS provides free templates), and common sense. As you grow past five, formalise: handbook, structured reviews, proper HR support. Don’t build a corporate HR department for one person — but don’t operate on handshakes either.

Can family members work for me?

Yes, with the same legal obligations as any employee — PAYE, minimum wage (yes, really, even for family), pensions, right-to-work checks. “It’s my son, it’s informal” doesn’t exempt you from employment law. That said, employing family can be tax-efficient (using their personal allowance) — get proper advice on structuring it.

When should I hire employee number two?

When employee one’s capacity is consistently full and you’re turning away profitable work and the finances support it with buffer. The same 2–3× value rule applies. Most small businesses hire too late rather than too early — the pain of being overstretched usually precedes the hire by months.

The Bottom Line

Register with HMRC, get employers’ liability insurance, check right to work, issue day-one contracts, set up PAYE and pensions, pay at least minimum wage. Budget 1.3× the salary for true cost, and hire when turned-away work justifies it — not before. The admin is front-loaded and finite; the leverage of a good first hire compounds for years. Get the legal foundations right on day one, hire for attitude, and your first employee becomes the best investment your business ever made.