Beyond the warm welcome and first-week plan, hiring a new employee in the UK carries a set of legal obligations that cannot be skipped or handled informally. Getting these wrong exposes a small business to genuine legal and financial risk, while getting them right is largely a matter of following a clear, repeatable checklist rather than requiring specialist legal knowledge for every hire.
This is a spoke in our hiring and onboarding cluster. For the full onboarding experience beyond compliance, see our pillar guide on the employee onboarding checklist for UK small businesses.
Confirm Employment Status First
Before anything else, confirm whether the person being hired is genuinely an employee, a worker, or a self-employed contractor, since each status carries different legal obligations around contracts, tax, and rights. Misclassifying someone’s employment status is a common and costly mistake, particularly for businesses used to hiring freelancers who are now taking on their first proper employee.
Right to Work Checks
UK employers are legally required to verify that a new employee has the right to work in the UK before their employment begins. This typically involves checking and retaining a copy of a passport, national identity card, or, where applicable, evidence of a work visa. This check must be completed and documented for every employee, regardless of nationality or how the role was sourced.
The Written Contract and Statement of Particulars
UK law requires employees to receive a written statement of employment particulars on or before their first day of work. This document must include, at minimum, job title, start date, pay and pay frequency, working hours, holiday entitlement, and notice period. A verbal agreement or informal email is not sufficient to meet this legal requirement.
Tax and Payroll Setup
| Requirement | What It Involves |
|---|---|
| New starter checklist or P45 | Collected from the employee to determine the correct tax code |
| PAYE registration | Required if this is the business’s first employee |
| National Insurance number | Collected and recorded for payroll purposes |
| Auto-enrolment pension assessment | Required for eligible employees within statutory deadlines |
Health and Safety Obligations
Employers have a legal duty to provide a safe working environment from day one. For most small businesses this means a basic health and safety induction covering fire procedures, first aid arrangements, and any role-specific hazards, documented as part of the onboarding record in case it is needed later.
Policies and the Employee Handbook
While not every policy is a strict legal requirement for every business size, providing clear written policies on matters such as disciplinary and grievance procedures, equal opportunities, and data protection protects the business and sets clear expectations for the new employee from the outset.
Probationary Period Terms
If a probationary period is being used, its length and terms should be stated clearly in the written contract, including how performance will be assessed and what happens if the probation is not successfully completed. Leaving this undocumented creates ambiguity that can become a genuine problem if the employment relationship does not work out.
Record Keeping
Employers are required to retain certain employment records, including right to work documentation, for a defined period, even after an employee leaves. Keeping a simple, consistent onboarding file for each employee from the outset makes this straightforward rather than something to reconstruct later under time pressure.
A Quick Legal Compliance Checklist
- Employment status confirmed (employee, worker, or contractor)
- Right to work check completed and documented
- Written statement of particulars issued on or before day one
- New starter checklist or P45 collected and payroll set up
- Pension auto-enrolment assessment completed within statutory deadlines
- Basic health and safety induction delivered and recorded
- Key policies shared, including disciplinary, grievance, and data protection
- Probationary terms clearly documented in the contract
Frequently Asked Questions
What happens if a right to work check is not completed?
Employing someone without a valid right to work check can result in significant financial penalties for the business, regardless of whether the failure to check was intentional. The check should be completed and documented before employment begins, without exception.
Is a written contract legally required for every UK employee?
Yes. UK law requires a written statement of employment particulars covering key terms to be provided on or before the employee’s first day, regardless of the size of the business or the nature of the role.
Do very small businesses still need to auto-enrol employees into a pension?
Yes, auto-enrolment obligations apply regardless of business size, though the specific duties and deadlines depend on the individual employee’s earnings and age at the point of assessment.
How long should employment records be kept after someone leaves?
Retention periods vary by document type, with right to work records typically needing to be kept for a set period after employment ends. Keeping a consistent, well-organised onboarding file for each employee from the outset makes meeting these requirements far simpler.
About the author: The Business To World editorial team covers practical business, banking, investment and property guidance for UK small business owners and entrepreneurs.