Are Your Self-Employed CIS Workers Exposing Your Business?

Many construction and civil engineering firms use CIS labour every day. When structured correctly, it works well. However, problems arise when the reality on site does not match the status on paper.

If your business supplies tools, provides vehicles, allocates work, and controls how it is carried out, the engagement may look more like employment than genuine self-employment. As a result, HMRC or an employment tribunal could later reclassify the arrangement as disguised employment.

In practice, this can create serious financial and legal exposure for the business and, in certain circumstances, for directors personally.

Why this matters now

Many business owners only discover the risk when an issue lands on their desk. Typically, that issue appears in one of two ways.

First, a worker challenges their status and claims they were effectively employed.
Second, HMRC reviews the engagement model and questions whether workers were paid correctly under CIS rules.

Both scenarios disrupt operations. Both carry financial consequences. Importantly, both are avoidable when the correct structure and documented audit trail are in place.

The Key Areas of Exposure

1) Employment status and tribunal claims

If a CIS worker is deemed to have operated as an employee, they may pursue:

• Unpaid holiday pay

• Statutory rights and entitlements

• Retrospective employment status claims

Even where a business successfully defends a claim, the time, cost, and management distraction can be significant.

2) HMRC challenges and backdated liabilities

If HMRC concludes that a worker was incorrectly classified under CIS, they can pursue:

• Backdated PAYE and National Insurance

• Interest on unpaid sums

• Financial penalties

• Broader review of your labour supply model

Consequently, what may appear to be a minor classification issue can escalate into a substantial financial exposure.

3) Potential loss of gross payment status

For construction businesses operating under CIS, gross payment status supports both cash flow and credibility within the supply chain. However, incorrect CIS application increases the likelihood of HMRC review. In serious cases, this can result in suspension or loss of gross payment status.

The “Quick Test” Question

If your CIS model were challenged tomorrow, would you be able to demonstrate:

• Why each worker is treated as self-employed

• What the worker agreed and understood

• That the engagement structure is consistent

• That payroll deductions and CIS submissions are handled correctly

If the answer is uncertain, now is the time to review it.

Is it time to move CIS labour to an external specialist?

Increasingly, construction firms are choosing to move their CIS workforce to an external payroll specialist. The aim is not to remove responsibility, but to reduce exposure and introduce documented structure.

An external model can provide:

• Independent onboarding

• Recorded CIS status verification

• Clear and consistent audit trails

• Accurate CIS processing and HMRC submissions

• One consolidated weekly invoice

• 24/7, 365 support instead of relying solely on internal cover

In addition, outsourcing reduces reliance on a single internal payroll administrator and improves continuity across holidays, sickness, or staff turnover.

How New Red Planet supports CIS labour correctly

New Red Planet works with hundreds of businesses and thousands of workers across the UK. For CIS workforces, we provide:

• Worker onboarding through our secure portal

• Recorded and logged CIS status questionnaires

• Direct worker briefings via Teams or on site

• CIS verification and compliance checks

• Fully managed payroll and HMRC submissions

• Insurance cover included within the margin, including Public Liability Insurance, Professional Indemnity Insurance, and Employers’ Liability Insurance

As a result, businesses gain a more defensible, structured model that supports genuine self-employment while significantly reducing employment status and HMRC risk.

What the process looks like

1. You decide to review or proceed.
2. You provide a worker list.
3. We engage workers directly and explain the changes.
4. We onboard workers onto our portal.
5. We verify CIS status and complete recorded questionnaires.
6. You receive one weekly invoice.
7. We manage payroll, deductions, payments, and HMRC submissions.

Book a confidential review

If you would like a confidential discussion to assess your current CIS employment status risk, we can walk through:

• Where exposure typically sits

• What documentation you currently hold

• What a structured transition would look like

There is no obligation and no pressure.

Contact Steve McDermott if you would you like to know a little more about the risk and benfit of outsourcing you contractor payroll, and have No-obligation chat:

steve.mcdermott@newredplanet.com

07854 881 220 or 0161 713 1730