HR Services for Small Businesses: What You Need and What It Costs

A small UK employer carries most of the same employment obligations as a large one. There is no headcount threshold below which written particulars, holiday entitlement, auto-enrolment or the Equality Act stop applying. What changes is capacity: below roughly 50 employees, people work is intermittent, so a full-time HR hire is hard to justify while the exposure is identical.

This guide covers what small businesses actually need, the four ways to buy it, what each costs, and how to compare providers without signing something you cannot exit.

What you need in place, in priority order

If nothing formal exists, this sequence removes the biggest exposures first:

1. Written particulars of employment for every employee and worker, issued on or before their first day. This is a statutory duty, not a nice-to-have, and it applies to workers too.
2. A disciplinary and grievance procedure that follows the ACAS Code of Practice. An unreasonable failure to follow the Code can increase a tribunal award by up to 25 per cent.
3. Holiday and working-time records. Statutory entitlement is 5.6 weeks a year, pro-rated for part-timers, and holiday pay for variable-pay workers must reflect normal remuneration over a 52-week reference period.
4. Payroll and pension compliance. Auto-enrolment duties begin with your first eligible worker.
5. A staff handbook describing how your business actually operates, including absence reporting, capability, and any enhanced terms.
6. Health and safety policy in writing, required once you reach five employees.
7. Someone competent to call before you act. Almost every expensive employment problem was inexpensive a week earlier.

The four ways small businesses buy HR

Route	Typical UK cost	Best for	Watch out for
Outsourced HR retainer	Roughly £150-£600 a month depending on headcount, city and whether tribunal cover is bundled	Ongoing compliance with no internal HR	Contract length, auto-renewal, shared advice line
HR consultant on a day rate	Commonly £500-£1,500 a day, London and the South East at the top	A defined project: restructure, handbook rebuild, one difficult exit	No ongoing cover between projects
Employment law firm	Fixed fee per matter or hourly	Live tribunal claims, settlement agreements, covenant enforcement	Not built for day-to-day HR admin
HR software plus ad-hoc advice	Low single-figure pounds per employee per month, plus advice when needed	Administration: holiday, absence, records	Software is not advice and will not defend a process

Most small employers end up with a retainer plus occasional day-rate work when something unusual happens. The mistake is buying a system and assuming compliance follows.

Retainer or consultant: how to decide

Choose a retainer when you need documents built and maintained, want an advice line available whenever a problem lands, and would benefit from insurance-backed tribunal cover. It is predictable and priced per month.

Choose a consultant when the work has a defined end: you are restructuring, you need a pay framework, you have one exit to handle properly. You pay for the work and stop.

Choose both when you have a retainer for cover and hit something that needs concentrated senior attention.

Our HR outsourcing guide and HR consultancy guide set out what each includes and excludes in detail.

Local firm or national provider

The market splits fairly evenly, and the trade-off is consistent.

National outsourcers offer long opening hours, insured tribunal cover, extensive document libraries and per-employee pricing. The trade-offs are contract term, often three to five years with auto-renewal, and advice from a shared line rather than one named adviser.

Local and regional firms offer a named consultant who knows your business, shorter or rolling terms, and someone who will attend a disciplinary hearing in person. The trade-off is depth of bench when two problems land in the same week.

If you expect to need someone in the room, weight proximity. If you want breadth of cover at a predictable monthly cost, weight scale.

What to ask before you sign

• Is tribunal cover insurance-backed, and what does the policy exclude? Pre-existing matters usually are.
• Is advice from a named adviser or a queue?
• What is the initial term, the notice period, and does it auto-renew?
• Are contracts and the handbook drafted for us, or issued from a template?
• Who owns the documents if we leave?
• Is the advice line covered outside office hours?
• What is not included and charged separately?

The exclusions list tells you more about a contract than the price does.

Common mistakes we see

• Templates that describe a different business. Handbooks referencing departments and policies you do not have are worse than none: you are bound by terms you did not intend.
• No paper trail. Employers usually lose on process, not on the merits. No investigation, no invitation letter, no right to be accompanied, no appeal.
• Treating probation as a shield. It does not disapply notice, discrimination protection or automatically unfair dismissal grounds.
• Self-employed labels on employed reality. Status follows the facts, and getting it wrong backdates holiday, minimum wage and pension liabilities.
• Signing a five-year term to save a few pounds a month. The monthly saving is small. The exit cost is not.

Next step

Compare the providers covering your area, with what each specialises in and where they are based, in the city directories, or browse by service in the HR services hub.

This guide is general information about UK employment practice, not legal advice. Rates and reference periods change: check current figures on gov.uk before acting.