Skip to main content

    April 2026: New National Minimum Wage rates now in effect. Check your pay →

    SiteKiln — Your rights on site. In plain English.
    SiteKiln

    Are you really self-employed, or is your boss dodging tax on your pay?

    For site workers paid gross, paid under CIS, or told 'you're self-employed, mate' without a real say in how, when, and where they work.

    Sound familiar?

    • “I'm on CIS but I turn up at 7:30 like an employee, use the firm's tools, and get told what to do all day.”
    • “I've got no contract, no holiday pay, and no idea what I'd do if I got injured on site.”
    • “HMRC sent me a letter asking about my status.”
    • “The yard supervisor books my hours, my breaks, and my Saturday. Doesn't feel self-employed.”

    What this tool does

    Runs through the three core HMRC employment-status tests (control, substitution, and mutuality of obligation) and gives you a reasoned answer with the factors that pushed it one way. It is not a replacement for HMRC's CEST, but it is faster and explains the reasoning in plain English.

    Question 1 of 15

    1. Are you told what time to start and finish each day?

    What the law actually says

    • HMRC and the courts decide status based on how the work actually happens, not what the contract says. A written 'self-employed' clause does not override the reality on site.
    • A false self-employment arrangement can leave the engager liable for PAYE, NICs, holiday pay and unfair dismissal protections going back years.
    • Status is assessed per engagement. You can be employed on one job and genuinely self-employed on another in the same month.

    What to do next

    Get monthly SiteKiln updates?

    One email a month. Rate changes, new tools, guide updates relevant to you. No spam, unsubscribe any time.

    Important disclaimer

    SiteKiln provides general guidance only. Nothing on this site — including our guides, tools, templates and document hub — is legal, tax, financial or professional advice.

    Every situation is different. Laws, regulations and industry standards change. You should always check with a qualified professional before making decisions based on what you read here.

    We do our best to keep information accurate and up to date, but we cannot guarantee it is complete, correct or current. SiteKiln accepts no liability for actions taken based on the content of this site.