Employment Law Guide -- Updated July 2026
Employment Status Test Guide 2026/27
How you are paid and taxed, and which employment rights you have, both depend on your employment status -- but UK law recognises three different categories that do not always line up neatly with how a contract is labelled. Getting status wrong can leave a business exposed to backdated tax, National Insurance and tribunal claims, and can leave a worker without rights they assumed they had. This guide explains the three categories, the tests used to tell them apart, and how status interacts with IR35 in 2026/27.
The Three Categories of Employment Status
UK law recognises three broad statuses, and it is possible to be one for employment rights purposes and technically taxed differently -- status for tax and status for employment rights are assessed separately, though the underlying facts overlap heavily.
- Employee: works under a contract of employment, gets the fullest set of rights (unfair dismissal, redundancy pay, statutory notice) and is taxed through PAYE.
- Worker: a middle category with some rights (National Minimum Wage, paid holiday, protection from discrimination) but not the full employee package -- typically gig-economy and casual staff.
- Self-employed: runs their own business, invoices for services, bears their own commercial risk, and has very limited statutory employment rights.
The Key Legal Tests
Tribunals and HMRC look past contract labels to the reality of the working relationship, using several long-established tests:
- Control: how much say does the engager have over what, how, when and where the work is done?
- Personal service and substitution: must the individual do the work personally, or can they send a substitute? A genuine, unfettered right of substitution strongly points away from employment.
- Mutuality of obligation: is the engager obliged to offer work and the individual obliged to accept it? Genuinely casual, no-obligation arrangements point away from employee status.
- Integration and other factors: whether the person is part and parcel of the organisation, provides their own equipment, bears financial risk, and can profit from sound management.
No single factor is decisive -- courts weigh the whole picture, and a written contract that does not reflect what actually happens in practice can be overridden by the facts.
Why Status Matters
Employment status drives two largely separate sets of consequences: employment rights, and tax treatment.
- Rights: only employees get unfair dismissal protection (after qualifying service), statutory redundancy pay and full family leave rights. Workers get National Minimum Wage and holiday pay but not these. The genuinely self-employed get almost none of this.
- Tax: HMRC applies its own employment status test for tax purposes, largely mirroring the employment-law tests, to decide whether PAYE and employer National Insurance should apply, or whether the person can be paid gross as self-employed or through their own company under IR35 rules.
HMRC’s CEST Tool and IR35
For engagements through personal service companies, HMRC provides the Check Employment Status for Tax (CEST) tool to help engagers and contractors assess whether IR35 (off-payroll working) rules apply. CEST gives HMRC-backed reassurance when used accurately and the result is kept as evidence, but it does not cover every scenario and can return an "unable to determine" result in genuinely borderline cases.
CEST assesses status for the purpose of the intermediary rules specifically -- it is a proxy for the underlying employment status tests, applied to whether the fee-payer should deduct tax and NI as if the contractor were an employee of the end client.