UK Contract Type Guide · 2026
What is the difference between self-employed, worker, and employee in the UK?
Definition
Three legal categories: 'Employee' has a contract of employment, mutuality of obligation, personal service, employer control; 'Worker' has personal service obligation but greater flexibility; 'Self-employed' provides services as own business, can substitute, no mutuality. Status is determined by all the facts of the relationship — what's in the contract is just one factor.
Rights and protections
EMPLOYEE: full rights including unfair dismissal (2 years), redundancy pay, statutory maternity/paternity, parental, dependant leave, pension auto-enrolment, statutory notice. WORKER: NMW, holiday pay, rest breaks, protection from discrimination, statutory sick pay if eligible, but generally no unfair dismissal/redundancy. SELF-EMPLOYED: no employment rights; rely on contract terms only.
Employer obligations
EMPLOYEE: PAYE, employer NI, pension auto-enrolment, all statutory leaves, discrimination protection, written particulars day 1. WORKER: NMW, holiday pay, rest breaks, written particulars (since April 2020), discrimination. SELF-EMPLOYED: pay according to contract; no PAYE; no employment rights.
Tax and pay implications
EMPLOYEE: PAYE + employee NI (12% rate band) + employer NI (15% rate). WORKER: same PAYE structure, but fewer employment-related benefits. SELF-EMPLOYED: Self Assessment tax return; pay income tax (same rates) + Class 2 + Class 4 NI; can deduct legitimate business expenses; potentially register for VAT if turnover £90k+. Off-payroll working rules (IR35) may apply if working through own limited company.
Common use cases
EMPLOYEE: full-time/part-time professional roles. WORKER: zero-hours, casual, gig economy (Uber, Deliveroo etc.). SELF-EMPLOYED: independent contractors, consultants, freelancers, sole traders, ltd company contractors operating outside IR35.
Worked example
Mark worked as a 'freelance designer' for a marketing agency for 18 months — 4 days a week, on agency premises, using agency equipment, with set hours, supervised by an agency manager. The agency treated him as self-employed (sent invoices, no PAYE, no holiday). Mark believed (correctly) he was actually a worker — the level of control and lack of substitution rights pointed to worker status. He raised an HMRC employment status determination + tribunal claim for backdated holiday pay. HMRC ruled worker; tribunal awarded £8,400 backdated holiday pay; agency had to register him for PAYE going forward.
Recruiter pro tip
The CEST tool (Check Employment Status for Tax) at gov.uk is HMRC's official assessment of employment status. Run it on any 'self-employed' arrangement that lasts more than 6 months with the same client. If CEST returns 'inside IR35' or 'employed for tax purposes', the working arrangement is being mischaracterised — either change the arrangement or accept the employment status. Many UK businesses get this wrong and face HMRC PAYE backdating + employment tribunal claims.
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