Understanding Person Specifications in Employment Law: A Guide for UK Businesses

When it’s time to hire your first employee-or expand your growing team-one thing is always clear: finding the right person for the job can make or break your business. But how do you go about defining exactly who you need, while staying on the right side of the law?

That’s where the “person specification” comes in. Often overlooked or misunderstood, this document sets out the ideal mix of skills, experience, and personal qualities you want in a candidate-and helps you avoid unintentional discrimination or costly recruitment mistakes.

If you’re a business owner navigating recruitment in the UK, understanding what a person specification is (and why getting it right matters) should be near the top of your legal to-do list. In this guide, we’ll walk you through the essentials-what a person specification covers, how it intersects with employment law, and practical steps to craft one that protects and empowers your business.

Ready to simplify your hiring process and boost compliance? Keep reading to learn how to get it right from day one.

What Is a Person Specification and Why Does It Matter?

A person specification is a document used alongside a job description during recruitment. While the job description sets out the role’s duties and responsibilities, the person specification defines the qualifications, attributes, skills, and experience you want in the person filling that role. Think of it as a checklist that helps you (and applicants) know exactly what you’re looking for.

But it’s much more than a recruitment tool-it also forms a key part of your legal compliance under UK employment law. Creating a fair, clear, and legally sound person specification reduces the risk of discrimination claims and ensures a level playing field for all candidates.

So why is this so important for your business? Let’s break it down:

• Clarity: You’ll attract candidates who are genuinely suited to the job, saving time and resources during shortlisting and interviews.
• Fairness: By focusing on what’s really needed for the role, you reduce bias and make your selection process more transparent.
• Legal protection: If you’re ever challenged on your recruitment decision, a clear person specification can show you followed a fair, objective, and lawful process.

In short, a well-crafted person specification helps you hire smarter-and stay protected from day one.

How Does a Person Specification Fit Into UK Employment Law?

If you’re hiring in Britain, you’re required to comply with a string of employment laws that protect job applicants from unfair treatment. At the heart of this is the Equality Act 2010.

The Act makes it unlawful to discriminate against candidates based on:

• Age
• Disability
• Gender reassignment
• Marriage and civil partnership
• Pregnancy and maternity
• Race
• Religion or belief
• Sex
• Sexual orientation

If your person specification includes requirements that directly (or indirectly) disadvantage someone because of one of these “protected characteristics”-unless it’s strictly necessary for the role-you could unknowingly break the law.

That’s why your person specification should always be:

• Objective: Focused on what’s genuinely needed to perform the job.
• Relevant: Linked to the duties described in the job description.
• Non-discriminatory: Free from requirements that could exclude certain groups, unless objectively justified.

Staying compliant isn’t just about avoiding complaints-it’s about building a reputation as an ethical, inclusive employer. For more on avoiding legal pitfalls in job offers, check out our guide to misrepresentation in job offers.

What Should Be Included in a Person Specification?

A great person specification is concise, clear, and tailored to the specific job. Here's what to include:

• Qualifications: The minimum qualifications or professional accreditations required.
• Experience: Years or type of experience necessary (for example, “experience in managing small teams” or “customer service background”).
• Skills and knowledge: Both technical (“proficient in Excel”) and soft skills (“excellent communicator”).
• Personal attributes: Characteristics that align with your team culture-such as “reliable,” “adaptable,” or “customer-focused.”
• Special requirements: Anything essential to the business-such as “must have right to work in the UK” or “may require occasional weekend work.”
• Essential vs. desirable criteria: Differentiate what’s absolutely necessary from nice-to-have attributes, so you can shortlist effectively.

The key is to make sure every requirement is justified by the actual needs of the job-this is what protects you from accidental discrimination.

Common Legal Risks When Writing Person Specifications

Many business owners don’t realise that a badly written person specification can expose you to legal complaints-or even tribunal claims. Here are some common mistakes (and how to avoid them):

• Vague or subjective wording: Phrases like “must be energetic,” “young and dynamic,” or “mature attitude” can directly or indirectly discriminate by age.
• Unnecessary qualifications: Requiring a university degree if the job doesn’t genuinely demand it could disadvantage candidates from certain backgrounds.
• Physical requirements: Unless a specific physical ability is essential (for example, lifting heavy items), this could discriminate against disabled candidates.
• Language-based requirements: Only include “fluent English required” if the role genuinely cannot be performed without it.
• “UK driving licence” as standard: Ask for this only if driving is really essential to the job.

The golden rule? Stick to what’s essential-and be ready to show how every requirement connects to the job itself. If you’re not sure, it’s wise to seek tailored legal advice (and you can always see our guide to hiring your first employee).

How Do I Draft a Legally Compliant Person Specification?

The good news is that writing a legally sound person specification doesn’t have to be complicated. Here’s a step-by-step approach:

1. Start with the job description.
   List out every duty and responsibility the role covers. This gives you a firm foundation for what the person specification needs to reflect.
2. Define the “essential” criteria.
   What qualifications, experience, or skills does someone absolutely need to carry out the job? Keep this list as tight as possible to avoid excluding great candidates.
3. Define the “desirable” criteria.
   What would be useful, but not strictly necessary, for an outstanding performance in the job? These can help you distinguish between similarly qualified candidates later on.
4. Check for potential discrimination.
   Ask yourself: does any requirement risk excluding groups protected under the Equality Act 2010, without a genuine need? If so, reword or remove it.
5. Use clear, measurable wording.
   Instead of “must be energetic,” try “must be able to work flexible hours, including weekends, when required.”
6. Review and update regularly.
   As your business grows, the needs of each role may change-so refresh your person specifications to stay accurate and compliant.

Stuck on the compliance piece? Our team can review your draft or help you set up strong HR policies from the start.

Is a Person Specification Legally Required in the UK?

Strictly speaking, there’s no law saying you must have a person specification for every role you advertise. However, it is best practice and strongly recommended by both Acas (the government’s Advisory, Conciliation and Arbitration Service) and the Equality and Human Rights Commission.

Here’s why:

• Objective selection: If you’re challenged about a recruitment decision, a clear person specification helps prove you acted fairly.
• Reduces unconscious bias: Having written criteria keeps you focused on who can do the job, not just who you “click with”.
• Boosts your employer brand: Clear requirements show candidates you’re serious about fair and inclusive hiring.

It’s also a great way to support your obligations under the Employment Rights Act 1996 and related workplace legislation, which require clear, non-discriminatory processes from the moment you begin your hiring journey.

Person Specification vs Job Description: What’s the Difference?

These documents work hand-in-hand, but have distinct roles:

• Job Description: Lays out the main duties, responsibilities and scope of the position. It answers: “What will this person do on a daily basis?”
• Person Specification: Sets out the skills, knowledge, experience, and attributes the person needs to succeed in that role. It answers: “What kind of person do we need to do this job well?”

Including both in your hiring process ensures clarity for applicants and protects you if your decision-making is ever questioned. Need help? You can book a review of your employment documentation via our contract review service.

What Are the Consequences of Getting It Wrong?

Failing to use a fair, compliant person specification can have serious repercussions for your business. These could include:

• Discrimination claims: If an applicant can show they were unfairly excluded due to a protected characteristic, you could face legal claims, financial penalties, and reputational damage.
• Hiring the wrong person: Vague criteria often result in employees who don’t fit the job-leading to performance issues, high turnover, and wasted training costs.
• Difficulty defending decisions: Without an objective, documented process, you may struggle to justify why a certain applicant was selected or rejected.

The bottom line? Taking the time to draft a careful, up-to-date person specification isn’t just “nice to have”-it’s a key legal and business safeguard.

Practical Person Specification Example

To make things easier, here’s a simple, legally compliant sample for a customer service role:

• Essential Criteria:
  • Experience in a customer-facing role (at least 1 year)
  • Excellent verbal and written communication skills
  • Ability to handle enquiries professionally and efficiently
  • Flexible to work shifts, including some weekends
  • Right to work in the UK
• Desirable Criteria:
  • Experience with point-of-sale software
  • Second language skills (e.g., Spanish, French, Polish)
  • Experience handling customer complaints

Note how each requirement is tied to the real needs of the role-nothing unnecessary, nothing likely to exclude on a protected basis.

Best Practices for Reviewing Your Person Specifications

Before making your next hire, ask yourself:

• Is every requirement really essential for the job?
• Could any criterion exclude candidates unfairly?
• Are the skills and competencies easy to measure?
• Does the language invite a broad and diverse range of applicants?

Updating your person specification regularly (especially as your business, technology, or legal requirements change) will keep your recruitment fair and competitive.

Other Legal Essentials For Recruitment

Writing a solid person specification is just one part of a legally safe hiring process. To be fully covered, also make sure to:

• Have up-to-date staff handbooks and workplace policies
• Use compliant staff contracts of employment
• Understand your obligations under UK employment laws
• Have a fair and transparent recruitment process from start to finish

It can be overwhelming to juggle all these requirements, especially as your business grows. If you’re ever in doubt, don’t hesitate to speak to a specialist employment lawyer-they can help you avoid pitfalls that cost time and money down the track.

Key Takeaways

• A person specification defines the ideal candidate’s skills, experience, and attributes, supporting fair and efficient hiring.
• Getting your person specification right is essential to comply with UK employment law, especially the Equality Act 2010.
• Avoid discriminatory language, unnecessary qualifications, and requirements not linked to essential job duties.
• Pair your person specification with a written job description and robust employment documentation for maximum legal protection.
• Review your recruitment processes regularly and seek legal advice when unsure-protecting your business from day one.

If you’d like help ensuring your person specifications and hiring process are fully compliant (or want tailored legal guidance), reach out to the Sprintlaw team on 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat. Our friendly UK lawyers are here to guide you every step of the way.