A practical guide for fabrication and steel businesses trying to work out whether the Construction Sectoral Employment Order applies to their workforce.

If you run a fabrication business, you’ve probably had this conversation internally more than once: “are we construction, or are we manufacturing?” It matters more than it sounds. The Sectoral Employment Order (SEO) for Construction sets legally binding pay rates, overtime rules, and pension obligations — and if it applies to your installers and you haven’t been paying SEO rates, the exposure is backdated and real.

Most fabrication and steel businesses sit somewhere on a spectrum. Some are clearly outside the SEO. Some are clearly inside it. A good number sit in the middle — and that middle ground is exactly where we spend a lot of our time advising clients. This article sets out the actual test, so you can work out which end of the spectrum your business is on.

The Two Tests That Decide It

Whether the SEO applies comes down to two separate questions. Both need to be answered — and the second one is often the one businesses overlook.

• Does the employer operate in the construction sector, as the SEO defines it?
• Does the individual worker’s role fall into one of the SEO’s defined classifications?

A business can be a mix of both. It’s entirely possible for your workshop-based fabricators to sit outside the SEO while the crew you send out to install and erect that same steelwork on-site sit inside it. The SEO applies to the work, not to the company as a whole — which is exactly why a single label like “fabrication business” or “construction company” doesn’t settle the question on its own.

Where Fabrication Businesses Typically Land

There’s no single rule that covers every fabrication business, because the answer depends on what actually happens to the steel after it leaves your workshop. That said, a few patterns come up again and again.

Likely Outside the SEO

If your business manufactures steel components in a fixed workshop and the product is delivered to site as a finished item — with installation carried out by the customer, a main contractor, or a separate specialist installation firm — that manufacturing activity is generally treated as outside the construction SEO. The work is production, not construction.

Likely Inside the SEO

If your own employees go on-site to erect, fix, or install structural steel as part of a building or civil engineering project, that on-site activity is generally treated as construction work — even if the same business also runs a fabrication shop. Steel fixers and structural steel erectors are specifically referenced within the SEO’s worker classifications, which is a strong signal of how this work is treated.

The Genuine Grey Area: Mixed Activity

This is where most of the uncertainty actually sits. A business that fabricates in the workshop and installs on-site doesn’t get to pick one classification for the whole operation. It’s common — and often correct — for the same employer to have workshop staff on standard manufacturing terms and an installation crew on SEO rates, because they’re doing genuinely different work. The risk is in not separating the two, and defaulting to one pay structure across a workforce that, legally, isn’t doing one job.

What the SEO Actually Requires — If It Applies to You

Where SEO coverage does apply, three things follow, and all three carry financial weight.

Minimum Rates of Pay

Workers must be classified correctly — Craftsperson, Category A, Category B, New Entrant Operative, or Apprentice — and paid no less than the relevant statutory minimum. Steel fixers are explicitly named under Category A. Paying the National Minimum Wage is not sufficient on its own if the SEO applies.

Overtime Structured by Day and Time

The SEO sets specific premium rates depending on the day and time the work is carried out — weekday evenings, Saturdays, Sundays, and public holidays all attract different multipliers. A flat ‘time and a half for overtime’ policy does not meet this requirement if your installers are covered.

Pension and Sick Pay

A compliant construction industry pension scheme and sick pay scheme must be in place for covered workers, with defined weekly contributions from both employer and employee. The Government’s My Future Fund auto-enrolment scheme does not satisfy this obligation on its own — the two can sit alongside each other, but one does not replace the other.

Why This Is Worth Checking Now, Not After an Inspection

Getting this wrong in either direction creates a problem. Assuming the SEO doesn’t apply when it does exposes you to backdated pay liability, pension and sick pay shortfalls, and enforceable WRC findings. Treating workers as SEO-covered when they’re genuinely outside it creates its own cost and administrative complications.

The businesses that get caught out are rarely cutting corners deliberately. More often, it’s a payroll structure set up years ago that was never revisited as the business grew, or a workforce that quietly evolved from ‘we make steel’ to ‘we make and install steel’ without the pay structure evolving with it.

Where Your Business Sits

If you read the sections above and you’re confident your installers never set foot on-site, or you’re confident they do and you’re already on SEO terms for that work — that’s a good sign you’ve got this right.

If you read it and you’re not entirely sure which category your crew falls into, that uncertainty is common, and it’s exactly what a short conversation can resolve. We work through this with fabrication and steel businesses regularly: looking at what the work actually involves, where it’s carried out, and how your current contracts and pay structures line up against the SEO’s tests.