In-house vs outsourced HR admin for small firms

Key takeaways

In-house vs outsourced HR admin is about who handles the paperwork, not the people decisions. HR admin of 15 hours a week costs about £20,900 a year when it sits with a £45,000 operations manager, or £12,300 with a part-time administrator. Outsourced at £12–£15 per hour, it costs about £8,400–£10,400.

• In-house: about £20,900 a year if a £45,000 manager does 15 hours a week.
• Outsourced: about £8,400–£10,400 for the same hours.
• In-house: keep people decisions, grievances and dismissals.
• Outsourced: onboarding paperwork, records, absence and rota admin.

What is HR admin?

HR administration is the paperwork and record-keeping that supports employment: offer letters and contracts, right-to-work records, onboarding and leaver checklists, absence and holiday records, rota updates, training records and routine staff queries. It is different from HR advice, which covers disciplinaries, grievances, redundancy and legal risk.

• In-house vs outsourcing: which model is more cost-effective?

What does in-house HR admin cost?

In many SMEs, HR admin sits with an operations manager or director. Fifteen hours a week of a £45,000 manager's time, at about £29.98 per worked hour, costs about £20,900 a year. A part-time HR administrator on a £28,000 full-time equivalent, working 15 hours, costs about £12,300 a year in employment costs.

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What does outsourced HR admin cost?

The same 15 hours a week, about 696 hours a year, at an indicative £12–£15 per hour costs about £8,400–£10,400, with cover included. The saving is largest when the work currently sits with a senior manager, and modest against a part-time administrator.

Which HR tasks should stay in-house?

Keep decisions about people in-house: hiring choices, performance, disciplinaries, grievances, pay and dismissals. These need judgement and often legal advice. Outsource the recording and processing that follows those decisions.

• In-house: hiring decisions, performance, discipline, pay.
• Advice: employment law questions, from an HR adviser or solicitor.
• Outsourced: contracts from templates, records, onboarding, absence tracking.

• Compliance admin burden: what you can hand off

Which HR records matter most?

Right-to-work checks must be completed and recorded before someone starts. Absence records feed Statutory Sick Pay, and holiday records protect against disputes. Keeping these accurate and up to date is exactly the kind of structured work a managed admin team does well.

• What it costs to recruit an employee in the UK

How do you protect HR data?

HR records include special category data such as health information, which needs extra protection under UK GDPR. Restrict access to named people, keep a processor contract with any provider, and store records in one secure system rather than in email.

• Data processing agreements for outsourcing

Which HR admin tasks move first?

Start with the most structured, highest-volume tasks, where rules are clear and mistakes are easy to spot. Move judgement-heavy or sensitive tasks later, if at all.

• First: onboarding packs, contracts from templates, document chasing.
• Next: absence and holiday records, rota updates, training records.
• Later: routine staff queries, using approved answers.
• Keep in-house: performance, discipline, grievances and pay decisions.

• What should you outsource first?

What does this look like in practice?

A pattern we see in UK hospitality groups: high seasonal hiring means dozens of contracts, right-to-work checks and onboarding packs each spring, handled by general managers between shifts. A managed admin team prepares the paperwork and chases missing documents, and managers only approve.

• See client work
• BPO Solutions for UK businesses

HR admin checklist

Use these steps to decide.

• List HR admin tasks and hours per week.
• Note who does them and their loaded cost.
• Separate admin from advice and decisions.
• Get outsourced quotes for the admin.
• Set access controls for HR data.

Next step

Tell us which HR tasks take your time. We will cost HR admin in-house and outsourced in a 30-minute call.