The Staffing Role of the HR Manager: A UK Guide

"Staffing" is the part of HR that decides who joins, who stays and on what terms. In a UK business it is also the part where the legal exposure starts earliest, because the Equality Act 2010 applies from the first job advert onwards, with no qualifying period of service.

This guide covers what the staffing side of an HR manager's job actually involves, the compliance points that catch employers out, and when it makes more sense to buy the function than to hire it.

What the staffing remit covers

Six activities, in the order they occur:

1. Workforce planning. Establishing which roles are needed, at what cost, and whether the work is permanent, fixed-term, part-time or genuinely contract work.
2. Defining the role. A job description and person specification that separate essential from desirable criteria. This is what makes a later capability conversation possible.
3. Attraction and selection. Advertising, sifting against the specification, structured interviews with consistent questions, and evidence-based scoring.
4. Right to work and pre-employment checks. Verifying right to work correctly is what establishes a statutory excuse against a civil penalty for illegal working. References and, where the role requires it, DBS checks.
5. Onboarding. Written particulars on or before day one, contract issued, payroll and pension set up, probation objectives agreed.
6. Retention and exit. Probation reviews, performance conversations, and handling resignations and dismissals with a documented process.

The compliance points that cause claims

Recruitment discrimination. Job adverts with unnecessary requirements, unstructured interviews, and questions about health or family plans create risk. Under the Equality Act 2010 a candidate can claim without ever having worked for you, and there is no cap on discrimination awards. You may only ask about health before a job offer in narrowly defined circumstances, for example to establish whether reasonable adjustments are needed for the assessment itself.

Right to work. Checks must be carried out before employment begins, in the prescribed manner, and evidenced. Retrospective checks do not give you the statutory excuse.

Employment status. Labelling someone self-employed does not make them so. Status is determined by the reality of the arrangement: control, personal service, mutuality of obligation. Getting this wrong exposes you to holiday pay, minimum wage and pension liabilities going back years.

Probation misconceptions. A probationary period is a contractual convenience, not a legal shield. It does not disapply notice, discrimination protection or automatically unfair dismissal grounds.

Written particulars. Since April 2020 these must be provided on or before the first day of work, and the duty extends to workers, not just employees.

Where an HR manager's judgement matters more than the process

The mechanics can be documented. Three decisions cannot:

• Whether to hire at all. Recruiting to cover a process problem embeds the cost permanently.
• When to end a probation. Most employers wait too long, then find themselves managing a capability case that should have concluded in month three.
• What to pay. Pay set without reference to the internal structure creates equal pay and morale problems that surface a year later, usually via a grievance.

Buying the function instead of hiring it

Below roughly 50 employees, most UK businesses do not need a full-time HR manager. The staffing work is real but intermittent. Common alternatives:

Option	Typical cost	Covers
Outsourced HR retainer	Around £150-£600 a month for a small employer	Contracts, handbook, advice line, process templates, often tribunal cover
HR consultant on a day rate	Commonly £500-£1,500 a day	Recruitment design, pay structure work, restructures, difficult exits
Recruitment agency	Contingency fees quoted as a percentage of starting salary	Sourcing and shortlisting only, not employment compliance
Embedded or on-demand recruiter	Per hire or monthly	Sustained hiring volume without a permanent in-house team

A recruiter fills roles. They do not issue your contracts, run your probation reviews or defend your process. Those sit with HR support. Compare what each includes in our recruitment and HR consultancy guides.

A practical checklist for the next hire

• Job description and person specification written before advertising, not after
• Same core questions for every candidate, scored against the specification
• Interview notes retained: they are your evidence if the decision is challenged
• Right to work check completed and evidenced before the start date
• Written particulars issued on or before day one
• Probation objectives set in writing, with review dates diarised

Missing the last two is the most common pattern we see in the employers who later need urgent advice.

To find providers who can build this properly for your business, browse the city directories.

This guide is general information about UK employment practice, not legal advice.