UK Employment Law for Hiring: What Employers Must Know in 2026

Hiring in the UK means complying with employment law that is spread across more than fifty separate statutes, statutory instruments, and codes of practice. There is no single “UK Employment Code” that brings it all together. The Employment Rights Act 1996, the Equality Act 2010, immigration legislation, data protection law, tax rules for contractors, and minimum wage regulations all impose separate obligations — and they are enforced by different bodies with different penalties.

The result is that many employers, particularly those hiring for the first time in the UK market or scaling their teams, run into legal problems not because they intended to break the law, but because they simply did not know which law applied. A discriminatory job advert can trigger an Equality and Human Rights Commission investigation. A missing written statement of employment can lead to a tribunal award. A failed Right to Work check can produce a £60,000 fine per worker.

This guide covers the specific UK employment laws that affect recruitment and hiring decisions. It is organised by the stage of the hiring process where each law applies, so that HR teams and hiring managers can use it as a practical reference rather than reading through legislation.

Key UK Employment Legislation for Hiring: A Summary

Before looking at each law in detail, this table provides a reference of the core statutes that affect hiring in the UK, what each one requires, and how it affects the recruitment process specifically.

The sections that follow examine each of these areas in practical detail, with the specific obligations, penalties, and action points that hiring teams need to know.

Employment Rights Act 1996: Written Statements and Day-One Rights

The Employment Rights Act 1996 (ERA 1996) is the foundational statute for individual employment rights in the UK. For hiring, the most immediately relevant provisions are the requirements around written statements of employment particulars.

Written statement obligation (Section 1, ERA 1996):

Since 6 April 2020, employers must provide a written statement of employment particulars on or before the employee’s first day of work. This change, introduced by the Employment Rights (Employment Particulars and Paid Annual Leave) (Amendment) Regulations 2018, moved the deadline forward from the previous two-month window. The requirement now extends to workers as well as employees.

The written statement must include:

• Employer and employee names
• Date employment began (and the date continuous employment began, if different)
• Job title or description of the work
• Place of work
• Pay rate and payment intervals
• Hours of work, including which days and whether hours may vary
• Holiday entitlement and holiday pay
• Sick pay arrangements
• Notice periods for both employer and employee
• Duration of probationary period and any conditions attached
• Details of any training the employee must complete (and whether the employer will pay for it)
• Pension arrangements
• Any collective agreements that affect terms
• Disciplinary and grievance procedures

Failing to provide a compliant written statement does not void the employment relationship, but it exposes the employer to a tribunal claim. If the employee succeeds in any other employment tribunal claim, the tribunal can award an additional two to four weeks’ pay for the failure to provide written particulars.

Statutory notice periods:

The ERA 1996 sets minimum notice periods that cannot be reduced by contract:

• One week’s notice for employment of one month to two years
• One additional week per year of continuous service, up to a maximum of twelve weeks’ notice after twelve or more years of service

Contracts can specify longer notice periods (and commonly do for senior roles), but they cannot go below the statutory minimum. These periods should be stated clearly in the employment contract offered to the candidate.

Equality Act 2010: Discrimination in Recruitment

The Equality Act 2010 consolidated and replaced previous anti-discrimination legislation (the Sex Discrimination Act, Race Relations Act, Disability Discrimination Act, and others) into a single statute. It protects nine characteristics from discrimination in employment:

1. Age
2. Disability
3. Gender reassignment
4. Marriage and civil partnership
5. Pregnancy and maternity
6. Race (including colour, nationality, and ethnic or national origin)
7. Religion or belief
8. Sex
9. Sexual orientation

The Act applies from the very first stage of recruitment — the job advert — through to the point of offering or refusing employment. Every stage of the hiring process is covered:

Job adverts:

• Must not indicate or imply a preference for candidates of a particular protected characteristic (unless a genuine occupational requirement applies)
• Language matters: “young and dynamic team” implies age preference; “must be physically fit” may discriminate against disability unless it is a genuine requirement of the role
• The Equality and Human Rights Commission (EHRC) publishes guidance on non-discriminatory recruitment practices

Application forms and shortlisting:

• Selection criteria must be applied equally to all candidates
• If criteria disproportionately disadvantage a group with a protected characteristic (indirect discrimination), the criteria must be a proportionate means of achieving a legitimate aim
• Blind recruitment practices (removing names, educational institutions, and other identifying information from applications before shortlisting) can reduce unconscious bias

Interviews:

• Questions must relate to the candidate’s ability to do the job
• Questions about marital status, family plans, religious practices, or health (pre-offer) are not inherently unlawful to ask, but any negative inference drawn from the answers will be strong evidence of discrimination
• Recording interview notes and scoring criteria is strongly recommended. If a discrimination claim is made, the employer must show that the selection decision was based on legitimate, non-discriminatory factors

Pre-employment health questions (Section 60):

Section 60 of the Equality Act restricts employers from asking health-related questions before making a job offer. Pre-offer health questions are only permitted to:

• Determine whether the applicant can carry out a function that is intrinsic to the role
• Establish whether reasonable adjustments are needed for the selection process
• Monitor diversity of applicants
• Take positive action measures
• Check national security requirements

After a conditional offer, broader health questions can be asked (typically through an occupational health questionnaire), but withdrawing the offer based on health information must be objectively justified.

Right to Work Checks: Immigration Compliance

Every UK employer has a statutory obligation to check that each prospective employee has the legal right to work in the UK before employment begins. This obligation arises under the Immigration, Asylum and Nationality Act 2006 and is enforced by the Home Office.

The consequences of non-compliance are material:

• Civil penalty: Up to £60,000 per illegal worker (doubled from £20,000 in January 2024)
• Criminal prosecution: Up to five years’ imprisonment for knowingly employing an illegal worker
• Sponsorship licence: Suspension or revocation for sponsored worker employers
• Reputational harm: Employers receiving civil penalties are listed on the Home Office public register

The Right to Work check must be conducted before employment starts — not on the first day, not during the first week, but before the individual begins working. For a detailed walkthrough of the check process, document lists, EU Settlement Scheme share codes, and IDSP digital checks, see the full Right to Work Checks UK guide.

Key points for hiring teams:

• Checks must be completed for every employee, regardless of nationality or appearance. Checking only those who “look foreign” is race discrimination under the Equality Act 2010.
• EU nationals who arrived before 31 December 2020 must be verified through the Home Office Online Checking Service using a share code. EU passports alone are insufficient.
• For employees with time-limited permission to work, follow-up checks must be conducted before the permission expires. Missing the follow-up removes the statutory excuse.
• Digital identity verification through certified Identity Service Providers (IDSPs) is available for British and Irish passport holders, enabling fully remote onboarding.

GDPR and Data Protection in Recruitment

The UK General Data Protection Regulation (UK GDPR), as implemented through the Data Protection Act 2018, applies to all personal data collected during the recruitment process. Candidate CVs, application forms, interview notes, references, assessment results, and Right to Work documents are all personal data that must be processed in compliance with data protection law.

For a full treatment of data protection obligations during recruitment, see the GDPR Recruitment Compliance UK guide. The core requirements are:

Lawful basis for processing:

Candidate data processing during active recruitment is typically based on “legitimate interests” (Article 6(1)(f) UK GDPR) — the employer’s legitimate interest in assessing candidates for an open role. For certain categories of data (e.g., health information collected through occupational health checks), the lawful basis may shift to “substantial public interest” under Schedule 1 of the DPA 2018.

Transparency and privacy notices:

• A candidate privacy notice must be provided at the point of data collection
• The notice must state what data is collected, why, the legal basis, who it will be shared with, how long it will be retained, and the candidate’s rights
• The notice should be linked prominently on the careers page and in any application acknowledgement

Data retention:

• Unsuccessful candidate data should be deleted after a defined retention period (six to twelve months is standard practice in the UK, aligned with the limitation period for discrimination claims)
• Successful candidate data transitions into the employee record, governed by the employment relationship
• Speculative CVs should only be retained with explicit consent and for a stated period

Automated decision-making:

Under Article 22 of UK GDPR, candidates have the right not to be subject to a decision based solely on automated processing that produces legal or significant effects. This directly affects AI-powered CV screening, automated rejection, and algorithmic candidate ranking. If automated tools are used in recruitment, human review must be available before any final decision, and candidates must be informed of the logic involved.

National Living Wage and Minimum Wage Obligations

The National Living Wage (NLW) is the statutory minimum hourly rate for workers aged 21 and over. It is set annually by the government following recommendations from the Low Pay Commission. From April 2025, the rates are:

• Workers aged 21 and over (NLW): £12.21 per hour
• Workers aged 18–20: £10.00 per hour
• Workers under 18: £7.55 per hour
• Apprentices (first year): £7.55 per hour

For hiring, the minimum wage creates several obligations:

Salary offers: Any salary offer must, when calculated as an hourly rate based on the contracted hours, meet or exceed the applicable minimum wage rate. This is straightforward for hourly-paid roles but requires calculation for salaried positions. A salary of £24,000 for a 40-hour week equates to approximately £11.54 per hour — below the NLW for anyone aged 21 or over.

Unpaid trial shifts: HMRC’s position is that trial shifts where the individual is performing productive work for the employer create an employment relationship and must be paid at least the minimum wage. Short working interviews (an hour or less, observational) may be defensible, but extended unpaid trial shifts are a minimum wage violation.

Internships: If an intern is a “worker” — meaning they have agreed to perform work and are not a student on a placement that is part of a UK higher education course — they are entitled to the minimum wage. Calling someone a “volunteer” or “intern” does not change their legal status if the reality of the arrangement is that they are working.

IR35 and Off-Payroll Working Rules

The off-payroll working rules (commonly known as IR35) affect employers who engage contractors working through their own limited companies or personal service companies (PSCs). Since April 2021 for medium and large private sector organisations (and since 2017 for the public sector), the responsibility for determining whether a contractor is “inside IR35” has shifted from the contractor to the hiring organisation.

What “inside IR35” means:

If the working arrangement would be considered employment if the contractor were engaged directly (without the intermediary PSC), the engagement is “inside IR35.” In that case, the fee-payer (the hiring organisation or the agency paying the PSC) must deduct income tax and employee National Insurance from payments and pay employer National Insurance contributions.

How employment status is assessed:

HMRC and tribunals consider multiple factors, primarily:

• Control: Does the hiring organisation control what work is done, how it is done, when it is done, and where?
• Personal service: Must the individual perform the work personally, or can they send a substitute?
• Mutuality of obligation: Is the hiring organisation obligated to offer work, and is the individual obligated to accept it?

Status Determination Statement (SDS):

The hiring organisation must provide the contractor with a Status Determination Statement setting out whether the engagement is inside or outside IR35 and the reasons for that determination. The contractor has the right to dispute the determination through a formal process. HMRC’s Check Employment Status for Tax (CEST) tool provides guidance but its determinations are not legally binding.

Small company exemption:

Organisations that qualify as “small” under the Companies Act 2006 (meeting two of three criteria: turnover under £10.2 million, balance sheet under £5.1 million, fewer than 50 employees) are exempt from the off-payroll rules. The contractor retains responsibility for their own tax determination.

Probationary Periods and Unfair Dismissal

Probationary periods are a common feature of UK employment contracts but they have no standalone legal status in statute law. An employee on probation has the same day-one rights as any other employee: protection from discrimination, the right to a written statement, whistleblower protection, and statutory notice.

What probation periods actually do:

• Allow the employer to set a shorter contractual notice period during the probation (e.g., one week instead of one month or three months)
• Establish a structured review point at which the employer formally assesses performance
• Provide a framework for extending the probation period if performance is not yet satisfactory

Unfair dismissal qualifying period:

The qualifying period for ordinary unfair dismissal protection is currently two years of continuous service (one year in Northern Ireland). This means that during a typical three- or six-month probation period, the employee does not have the right to claim ordinary unfair dismissal. However, the employer can still face claims for:

• Automatic unfair dismissal (no qualifying period) — e.g., dismissal for whistleblowing, asserting a statutory right, or trade union activity
• Discrimination (no qualifying period) — if the dismissal is related to a protected characteristic
• Wrongful dismissal — if the employer fails to give the contractual or statutory notice

Proposed changes:

The Employment Rights Bill (introduced in October 2024) proposes to make unfair dismissal a day-one right, removing the two-year qualifying period. The Bill includes provisions for a statutory probation period (initially proposed as nine months) during which a “lighter touch” dismissal process would apply. As of early 2026, the Bill is progressing through Parliament and employers should monitor its progress as it will fundamentally change the risk calculus around probationary dismissals.

Working Time Regulations 1998

The Working Time Regulations 1998 implement the requirements of the EU Working Time Directive (retained in UK law post-Brexit) and set limits on working hours, rest breaks, and holiday entitlement. These must be reflected in employment contracts from the point of hire.

Maximum working week:

• 48 hours per week, averaged over a 17-week reference period (or 26 weeks for some sectors)
• Workers can voluntarily opt out of the 48-hour limit by signing a written agreement. The opt-out must be genuinely voluntary and cannot be a condition of employment.
• Some roles are exempt from the 48-hour limit (e.g., managing executives with autonomous decision-making, armed forces, domestic servants in private households)

Rest breaks:

• A 20-minute uninterrupted rest break for any shift exceeding 6 hours
• 11 consecutive hours of rest between working days
• 24 hours of uninterrupted rest per week (or 48 hours per fortnight)

Annual leave:

• 5.6 weeks (28 days for a full-time worker) of paid annual leave per year
• This can include bank holidays — there is no separate legal entitlement to bank holidays unless the contract provides for it
• Leave entitlement accrues from day one of employment
• Part-time workers’ entitlement is pro-rated — use the UK pro-rata holiday tool to calculate the exact entitlement for any working pattern

Employment contracts must state the holiday entitlement, including how bank holidays are treated. A contract stating “20 days plus bank holidays” provides 28 days total for a five-day worker, meeting the statutory minimum. A contract stating “20 days holiday” without mentioning bank holidays means the employee is entitled to 20 days total — which, if bank holidays are not given separately, falls below the statutory 28-day minimum.

Agency Workers Regulations 2010

The Agency Workers Regulations 2010 apply when an employer uses temporary agency workers. The regulations give agency workers the right to equal treatment on basic working conditions — primarily pay — after a 12-week qualifying period in the same role.

Day-one rights for agency workers:

• Access to collective facilities (canteen, childcare, transport)
• Information about permanent vacancies within the hiring organisation

After 12 weeks in the same role:

• Equal pay (basic pay, overtime rates, shift allowances, bonuses directly linked to individual performance)
• Equal treatment on working time, rest breaks, and annual leave

For hiring teams that rely on temporary staff, the week-12 trigger point requires planning. The cost of an agency worker can increase significantly when equal pay provisions apply, particularly if the equivalent permanent role includes bonuses or shift premiums. Some organisations structure temporary assignments to avoid the 12-week threshold, though this must be done carefully — ACAS guidance notes that deliberately structuring arrangements to prevent qualifying is actionable.

Notice Periods and Contractual Terms

UK employment law sets statutory minimum notice periods under the ERA 1996, but contracts routinely specify longer periods. For hiring, the key consideration is that the notice period in the employment contract must at least match the statutory minimum and should be appropriate for the seniority of the role.

Typical contractual notice periods by seniority:

• Junior / entry-level roles: One week during probation, one month after probation
• Mid-level roles: One month, or one week during probation and three months after
• Senior / executive roles: Three to six months, occasionally twelve months for C-suite

Garden leave clauses:

Contracts for senior roles often include garden leave clauses allowing the employer to require the employee to stay at home during their notice period while continuing to pay them. This keeps the employee bound by their contractual obligations (including confidentiality and restrictive covenants) while preventing them from starting work with a competitor immediately.

Restrictive covenants:

Non-compete, non-solicitation, and non-dealing clauses must be reasonable in scope, duration, and geographic reach to be enforceable. UK courts will not rewrite an unreasonable covenant — they will simply declare it void. The enforceability of restrictive covenants should be considered at the contract drafting stage, not after the employee has resigned to join a competitor.

Using AI in UK Recruitment: Legal Considerations

The use of artificial intelligence in recruitment — for CV screening, candidate ranking, chatbot interactions, and interview analysis — raises specific legal issues under both the Equality Act 2010 and UK GDPR.

Equality Act risk:

If an AI tool produces screening or ranking outcomes that disproportionately disadvantage candidates with a protected characteristic, this constitutes indirect discrimination. The employer is liable, not the AI vendor. For example, if an AI CV screener trained on historical hiring data systematically ranks male candidates higher than female candidates for engineering roles, the employer using that tool is responsible for the discriminatory outcome.

The EHRC has issued guidance recommending that employers using AI in recruitment conduct Equality Impact Assessments, audit AI outputs for adverse impact across protected characteristics, and maintain human oversight of all automated decisions.

UK GDPR requirements:

• Candidates must be informed that AI is being used in the recruitment process (transparency obligation)
• Under Article 22, candidates have the right not to be subject to a decision based solely on automated processing. Fully automated rejection without human review is non-compliant.
• A Data Protection Impact Assessment (DPIA) is required when AI processing is likely to result in high risk to candidate rights
• Candidates who request it must receive meaningful information about the logic involved in automated decision-making

Treegarden’s AI-assisted recruitment features are designed with these legal requirements in mind: AI provides recommendations and scoring to support human decision-making, but final hiring decisions always remain with the recruiter. Audit trails record how AI scores were generated and how they factored into the selection process.

Gender Pay Gap Reporting and Pay Transparency

Under the Equality Act 2010 (Specific Duties and Public Authorities) Regulations 2017 and the Equality Act 2010 (Gender Pay Gap Information) Regulations 2017, employers with 250 or more employees must publish annual gender pay gap data. While this is a reporting obligation rather than a direct hiring requirement, it has significant implications for recruitment:

• Published pay gap data is scrutinised by candidates, particularly at senior levels
• Employers with wide pay gaps face reputational challenge in attracting female candidates
• Setting starting salaries based on previous salary (rather than the role’s value) can perpetuate existing pay gaps

Best practice for pay-equitable hiring includes publishing salary ranges in job adverts, using structured pay bands linked to role requirements rather than negotiation, and not asking candidates for their current salary during the recruitment process.

Frequently Asked Questions

UK employment law for hiring is detailed, but it is not arbitrary. Each obligation exists to protect a specific right — fair treatment, legal working status, data privacy, or minimum working conditions. The employers that get into trouble are usually not the ones who deliberately break the law, but the ones who did not realise which law applied. Building compliance into the hiring workflow — structured job adverts, consistent interview scoring, automated Right to Work tracking, GDPR-compliant data handling — turns a legal risk into a repeatable process. Treegarden is built with these workflows as standard features, not afterthoughts. Book a demo to see how it maps to your recruitment process.