Congratulations, you've hired your fifth person
It usually happens quietly. A new starter joins, you do the welcome, and somewhere in the first week it hits you. You're still a friendly team, but you're not three people any more. You're five now.
Then a thought creeps in. It's one I hear from owners all the time: "Hang on, should we have proper processes in place now?"
If you're asking that question, you're already doing better than most. You've got here by treating people well. You probably already pay fairly, know everyone's name and their kids' names, and sort things out over a coffee rather than a form. None of that needs to change.
But five is a real milestone, and there's a lot of half truths floating around about it. So here's the honest picture: the one legal change that kicks in at five, the things people think start at five but actually started with your very first employee, and the sensible basics worth putting in place while it's still easy.
Throughout this post you'll see two labels. Law means it's a legal requirement. Good practice means it's recommended, but it's your choice. Knowing the difference is half the battle.
What the law actually changes at five
Here's the surprise. The list is short. The main legal change when you reach five employees is about health and safety paperwork.
Write your health and safety policy down
Once you employ five or more people, your health and safety policy has to be in writing, and you have to bring it to your employees' attention. The same applies to any revisions. Under five, you still have the same duties, you just don't have to write the policy down.
Legal basis: Health and Safety at Work etc. Act 1974, section 2(3).
Record the significant findings of your risk assessment
At five or more employees, you also have to record the significant findings of your workplace risk assessment, and any group of employees it identifies as especially at risk. Think new or expectant mothers, young workers, or someone working alone.
Legal basis: Management of Health and Safety at Work Regulations 1999, regulation 3(6).
What goes in the policy
HSE is clear this doesn't need to be long or complicated. A good policy has three parts:
- Statement of intent. A short commitment from you, as the owner, to managing health and safety. Sign and date it.
- Responsibilities. Who does what. Who's the first aider, who checks the fire exits, who staff tell if something's wrong.
- Arrangements. How you actually manage the risks day to day. Training, equipment checks, what happens when there's an accident.
HSE has a free template on its website. For most small teams it's an afternoon's work, not a project.
If you work in health or care, your sector regulator will expect more than this baseline anyway. The five-employee rule is the legal floor, not the ceiling.
What doesn't wait for five
This is where a lot of well-meaning advice goes wrong. Plenty of things get described online as "once you hit five employees". Most of them actually started the day your first employee walked in. If you've already got these covered, great. You're in a better position than you might think. If not, now's a good moment to check.
| What | When it applies | Where people go wrong |
|---|---|---|
| Workplace pension (auto-enrolment) | From the day your first member of staff starts | You'll still see "five employees" quoted. That's out of date. Headcount doesn't matter. |
| Written statement of employment particulars | On or before an employee's first day | Some owners think a contract can follow later. The main terms need to be in writing from day one. |
| Disciplinary and grievance rules | Must be referenced in the written statement, whatever your size | There's no small-employer exemption. The Acas Code of Practice applies to everyone. |
| Employers' liability insurance | As soon as you become an employer (minimum cover £5 million) | Easy to miss if your first hires were informal. Fines can reach £2,500 a day. |
| Fire risk assessment, in writing | Every business in England, whatever its size | This one really did used to start at five. Since 1 October 2023, the full assessment has to be recorded regardless of headcount. |
The fire safety change
This is the one most likely to catch people out, because the old five employee rule is still widely repeated. Section 156 of the Building Safety Act 2022 changed the Regulatory Reform (Fire Safety) Order 2005, so in England every responsible person must now record their fire risk assessment in full. If you're in Wales or Scotland, check your local fire and rescue service's guidance.
A note if you're in Northern Ireland: employment and health and safety law there is separate and differs in places. The principles below still apply, but check the NI-specific rules.
What's worth putting in place now
None of the below is required by law at five employees. But this is the point where "we'll cross that bridge when we get there" starts to get stretched. With three people, everyone knows how holiday works because you told them over lunch. With five or more, people start comparing notes, and small inconsistencies become the things that sour a good team.
This is where a consistent, repeatable way of doing things really helps. Everyone gets treated the same way, which is fair and feels fair. It gives you peace of mind. And when you hire your first manager, they've got a foundation to follow instead of guessing how you'd want things done.
A short staff handbook
Not a 60-page binder. A few pages covering the things people actually ask about: holiday, sickness, pay dates, working hours, and who to go to with a problem. Your disciplinary and grievance procedures can live here, which also covers what your written statements need to point to.
It's also where your team can find answers without needing to ask you. That frees up your time to focus on growing the business, and it means everyone follows the same process. If you're weighing this up, our guide Do I need an employee handbook? goes into more detail.
A clear holiday and absence process
How to book leave, how much notice you need, what happens if two people want the same week, and who to call if they're off sick. It saves you making the same decision five different ways.
Regular one-to-ones
At five, you can still catch everyone informally. At eight or ten, you can't. A 20-minute monthly check-in with each person is the cheapest early-warning system there is. It's where people tell you things before they become problems.
It's also the best place to support each person's development and make sure you're both on the same page. And it's a chance to get to know them better, beyond the day-to-day.
One place for your people records
Contracts, right to work checks, holiday records and anything confidential, kept somewhere secure and consistent. Not spread across your inbox, a drawer, and your phone. It matters for data protection too.
This doesn't have to cost anything. There are free HR systems (often called an HRIS) that hold documents, track holiday and keep everyone's details in one place. Two examples:
- TalentHR has a free plan for up to 10 people, covering an employee database, time off tracking and document storage.
- HR.my is free with no limit on employees, and covers leave, expense claims, attendance and employee records.
Whichever you pick, check where it stores your data and that it works for UK GDPR before you upload anything.
None of this is about creating extra paperwork. It's so your team knows where they stand, and so you can make decisions once, fairly, rather than every time something comes up.
Changes coming anyway, whatever your size
Headcount isn't the only thing moving. The Employment Rights Act 2025 is being brought in stages, and most of it applies to every employer. A few points worth knowing about:
- Since 6 April 2026, Statutory Sick Pay is payable from the first day of sickness, and paternity leave and unpaid parental leave became day one rights.
- From 1 January 2027, the qualifying period for unfair dismissal is due to drop from two years to six months.
That second one matters for a growing team. It makes a fair, consistent way of handling performance and conduct more important, much earlier in someone's employment. That's another reason the handbook and one-to-ones above are worth doing now, while it's easy.
Where the next milestones actually are
So you're not caught off guard later, here's where the law's headcount thresholds genuinely sit:
| Number | What it relates to |
|---|---|
| 20 | Collective consultation, if you propose making 20 or more redundancies at one establishment within 90 days |
| 50 | Employees can formally request information and consultation arrangements |
| 250 | Gender pay gap reporting |
For most growing small businesses, five is the milestone that matters for a while.
Your five-person checklist
The legal bits
- Health and safety policy written down and shared with the team
- Significant findings of your risk assessment recorded, including anyone especially at risk
- Fire risk assessment recorded in full (England)
- Everyone enrolled in a workplace pension where eligible
- Every employee has a written statement, issued on or before their first day
- Disciplinary and grievance rules in place and referenced
- Employers' liability insurance in place and the certificate displayed
The good-practice bits
- A short, plain-English staff handbook
- A clear holiday and absence process
- Regular one-to-ones in the diary
- People records kept in one secure place
Has this crossed your mind?
If you've just made your fifth hire and you're reading this, you're probably not starting from scratch. Most of the owners I speak to have done a lot of this already, because they care about getting it right. What they want is someone to help them with a sense check, just in case.
That's what The Pocket HR does. A second pair of expert eyes on what you've already got, a clear list of any gaps, and plain English help filling them. No bulky process, no jargon.
If that would be useful, drop me a message and we can have a quick chat. And if not, I hope the checklist helps.
Where this information came from
Checked 28 September 2026. Law and guidance change, so check the current position before relying on it.
- HSE: Prepare a health and safety policy (government guidance)
- HSE: How to write your health and safety policy (government guidance, with free template)
- Management of Health and Safety at Work Regulations 1999, regulation 3 (legislation)
- London Fire Brigade: Changes to fire safety law (fire authority guidance)
- The Pensions Regulator: New employers (regulator guidance)
- GOV.UK: Employers' liability insurance (government guidance)
- GOV.UK: Employment contracts and conditions (government guidance)
- Acas: Code of Practice on disciplinary and grievance procedures (statutory code)
- Acas: Employment Rights Act 2025 (professional guidance)
- TalentHR: Pricing and free plan (product information)
- HR.my: Free HR software (product information)