Contractor or employee: how status is decided and how to get it right

Contractor or employee: for most assignments nobody asks, until a tax inspector looks at a freelancer who has worked in the same team for two years. At that point the word "contractor" in the agreement counts for little. Authorities look at how the work is actually done, and if it looks like employment, the client can face back payroll taxes and the freelancer can lose the tax treatment of a business.

Pricing your work is covered in calculating your freelance rate. This page goes deeper into status: the tests, enforcement in the main markets and what both sides can arrange before the work starts.

What contractor or employee status decides

Status decides who withholds income tax, who pays social contributions and whether the worker has employee rights such as paid holiday, sick pay and protection against dismissal. A contractor carries those costs personally and in return runs a business, with the tax reliefs that come with it.

One relationship can be tested by several authorities, each for its own purpose. In the United Kingdom, for example, a person may have a different employment status in tax law than for employment rights (source: GOV.UK, October 2026). And every test looks at reality: a contract helps when it matches the practice and counts for little when it does not.

How authorities decide: five questions behind every test

The legal tests differ per country, but they circle around the same five questions. No single answer settles it; the whole picture is weighed.

The intention of the parties counts too, but only if the practice matches it. Duration matters: a short project rarely raises questions, an open-ended assignment that turns into a role does.

Contractor or employee rules in major markets

What misclassification costs the client and the freelancer

The client usually carries most of the bill, because the authority treats it as the employer that should have withheld and paid: back payroll taxes and employer contributions, interest and penalties, and possible claims for holiday pay, pension or notice. The freelancer can lose business tax reliefs on the reclassified income.

Example: what two years with one client can cost

Tomasz, a freelance data engineer, has worked for one client, a mid-sized insurer, for almost two years. He works in the client's team four days a week, joins the daily stand-up, uses a company laptop and email address and invoices €640 a day. He has no other clients. On almost every question above, the facts point towards employment.

Fictitious Firmfocus example. The percentages are assumptions to show the mechanism; real contribution rates, look-back periods, penalties and reliefs differ by country. The logic works in any currency.

Both sides wanted to keep working together, so they redesigned the next contract:

• Result instead of hours: a fixed-price phase with three deliverables and acceptance criteria.
• Own schedule and equipment: deadlines instead of working hours, his own laptop and email address.
• A real right of substitution: he may send a qualified colleague at his own cost, and did so once.
• A second client: a smaller assignment elsewhere, about a fifth of his time.
• Own risk: defects fixed at his own cost, covered by professional liability insurance.

None of this guarantees the outcome, but each change moves an answer towards contractor. If the insurer really needs a permanent data engineer, the honest answer is a job offer; hiring your first employee shows what that costs.

How to get certainty before the work starts

1. 01

   Describe the work as it will really happen

   Answer the five questions honestly: methods, hours, place, equipment, substitution and how payment depends on results.

2. 02

   Run the official check

   Use the tool, ruling or guidance of your tax authority and, where relevant, the labour or social security authority. Save the result.

3. 03

   Write a contract that matches the practice

   Agree deliverables, price, liability, substitution and the freedom to work for others. A clause nobody applies shows that paper and reality differ.

4. 04

   Keep the evidence and review at every extension

   File quotes, milestone invoices and proof of other clients. Reassess at each renewal: most problems start when a project slowly becomes a role.

One freelancer or a business that hires many

Pitfalls

• Relying on the contract: a well-drafted agreement does not help if daily practice looks like employment.
• Hourly billing for an open-ended role: paying for time without a defined result is a clear sign of employment.
• A substitution clause nobody uses: a right that is never exercised, or that the client can veto, carries little weight.
• Testing only for tax: employment rights can follow a different test with a different outcome.

The Finance overview links to income protection and pensions, business taxes covers tax on profit and choosing a legal structure covers working through your own company. See Start a business for the other steps.