Employment Status Enquiry: When HMRC Says Your Contractors Are Employees

An employment status enquiry is HMRC's challenge to how a business has classified the people who work for it. If HMRC concludes that someone treated as self-employed, or engaged through an umbrella company or personal service company, is really an employee, the engaging business can become liable for PAYE and National Insurance that should have been deducted, plus interest and potentially a penalty.

Status is not decided by the label used in a contract. HMRC and the tribunals look at the reality of the working relationship, applying long-standing case law tests developed over decades of employment status litigation, and will disregard contractual wording that does not reflect what actually happens day to day.

The core tests consider personal service, control over how, when and where work is done, and mutuality of obligation, meaning whether the engager is obliged to offer work and the worker obliged to accept it. Financial risk, provision of equipment, integration into the business and the opportunity to profit from sound management are also weighed as supporting factors.

No single factor is decisive, and HMRC weighs the overall picture. A genuine, exercised right of substitution can be a strong indicator of self-employment, while a worker who is supervised closely, cannot send a substitute and is paid regardless of whether work is available looks more like an employee regardless of what any contract says.

Workers engaged through an umbrella company are usually employees of the umbrella, which should already operate PAYE. HMRC's concern in this area often centres on whether the umbrella is genuinely operating correctly, or whether it is facilitating disguised remuneration or incorrect deductions that leave the end engager exposed to compliance risk.

The Managed Service Company legislation targets structures where a personal service company is not genuinely independent but is instead controlled or influenced by a scheme provider. Where HMRC successfully argues Managed Service Company status, PAYE and National Insurance can be due on payments made, and in certain circumstances the debt can transfer to directors of the company or associated parties if it cannot be recovered from the company itself.

Expect requests for written contracts, but also for evidence of how work was actually carried out, including emails, rotas, invoices, equipment ownership, insurance arrangements and examples of any substitution. HMRC may also interview workers directly or ask for their perspective on how the engagement operated.

Because status can vary between individuals doing superficially similar work, a blanket assertion that all contractors in a role are self-employed rarely survives close scrutiny. A response that addresses individual working patterns, supported by contemporaneous evidence, carries more weight than a generic policy statement.

If HMRC reclassifies workers as employees, the engaging business can face a liability for unpaid PAYE and employer National Insurance across the periods in question, calculated using the payments actually made. Interest runs on the underpayment, and a penalty may apply depending on the behaviour that led to the misclassification.

Because reclassification can affect several workers over multiple years, the cumulative liability can be substantial even where each individual engagement was modest. Reviewing exposure early, and correcting ongoing engagements, limits how much further liability accrues while the enquiry continues.

Reviewing contracts and, more importantly, actual working practices before HMRC raises the question is the most effective protection. Genuine substitution rights, real financial risk and limited day-to-day control all support a self-employed conclusion, but only if they are reflected in practice and can be evidenced.

Where status is genuinely uncertain, documenting the reasoning at the time an engagement begins, and reviewing it periodically as the relationship evolves, makes it far easier to respond to a later HMRC enquiry with credible, contemporaneous evidence rather than reconstructed justification.