Hiring Your First Employee as a UK Tradesperson — What You Need to Know Before You Take Someone On (2026)

Taking on your first employee is the single biggest step most sole-trader tradespeople ever take. It turns you from a one-person operation into a business with legal obligations, ongoing fixed costs, and responsibility for someone else's livelihood. Done with clear eyes it can double your turnover and free you from the trap of trading time for money. Done on a whim, it can create financial and legal problems that linger for years. This guide is a complete, UK-specific walkthrough of everything you must do — and everything you must understand — before that first person sets foot on your jobs.

When to hire: the demand signals that tell you it's time

The most common mistake is acting on gut feeling during a busy spell rather than on a sustained pattern of demand. The clearest signal is turning down profitable work consistently for three or more months in a row. One or two declined jobs is a blip. A quarter of consistently referred-on work is a structural capacity gap.

A second signal is spending your evenings and weekends doing skilled work because your days are full. That is sustainable for a few weeks. It is not a business model. The third signal is doing your own admin — quotes, invoices, calls, scheduling — while a queue of paying jobs waits. When you are personally the bottleneck on revenue, you have run out of room.

The rule of thumb: if you have turned away work consistently for three or more months and you have at least 18 months of consistent enquiry history showing the demand is structural rather than seasonal, the economics almost certainly support a hire. Run the numbers first — the section below shows you what employment actually costs.

Employed vs self-employed subcontractor: getting the status right

Before you decide how to structure the arrangement, you need to understand how HMRC determines whether someone is genuinely self-employed or is, in substance, an employee. This matters because the financial consequences of getting it wrong fall on you as the engaging business, not on the worker.

HMRC applies a set of employment status tests. No single factor is decisive — the overall picture of the working relationship determines status. The key indicators are:

HMRC provides a free online tool called CEST (Check Employment Status for Tax) at gov.uk. Run your proposed arrangement through it before committing. It is not legally binding, but a documented CEST result in your favour is a strong defence if HMRC ever investigates.

False self-employment is actively investigated in construction. HMRC's CIS compliance teams specifically look for individuals who look and behave like employees but are being paid as subcontractors. If HMRC reclassifies a subcontractor as an employee they can pursue you for unpaid employer's NI at 13.8%, the income tax that should have been deducted under PAYE, interest, and penalties — going back up to six years. On a worker paid £30,000 a year, the employer's NI alone is nearly £2,900 per year. Across six years that is over £17,000 before interest and penalties are added. The saving on paper is never worth the risk in practice.

A genuine subcontractor invoices you for services, works for multiple clients, uses their own tools and van, sets their own hours, can send a substitute, and bears real financial risk on the outcome of their work. If that description does not match the reality of the arrangement, employ the person properly.

Legal steps before the first day: a pre-employment checklist

There is a defined sequence of steps every UK employer must complete before their employee starts. Missing any of them can result in penalties, tribunal exposure, or HSE enforcement action.

The true cost of an employee: a worked example

The salary you advertise is not what employment costs you. Employer-side charges sit on top and add substantially to the headline figure. A skilled tradesperson in the UK typically earns £25,000–£35,000 in 2026 depending on trade, experience, and location. Here is the full picture for a £30,000 salary.

A £30,000 salary costs you approximately £37,000–£40,000 all-in per year. That is what your pricing and job volume must generate on top of your own costs before you are genuinely ahead. Run this calculation before you offer anyone a job. The number needs to be comfortable, not optimistic.

The probationary period: what you can and cannot do

Most employment contracts include a probationary period of three to six months. During probation the notice period is shorter — typically one week on either side — and it is significantly easier to part ways if the hire is not working out. Use this period actively. It is not a formality.

Work alongside your new hire on the first several jobs so you can see their standard of work directly, not through second-hand customer feedback. Set explicit expectations about quality, timekeeping, customer interaction, and paperwork. Address issues as they arise. Do not save up feedback for a probation review at month three; by then, behaviours are established and the conversation is much harder.

During probation you can dismiss an employee, but the dismissal must not be for a discriminatory reason (protected characteristics apply from day one, not after two years). You must follow a fair process even during probation: tell them what the issue is, give them a reasonable opportunity to respond, and document the conversation in writing. A single informal conversation followed by a dismissal letter, with honest reasons, is legally defensible. Firing someone silently on a Friday without any prior discussion is not.

If you identify in week two that the hire is clearly wrong and there is no realistic prospect of improvement, end it then. Do not extend probation as a way of avoiding a difficult conversation. The longer someone is employed, the more procedurally complex it becomes to exit them, even within the two-year period before full unfair dismissal rights apply.

The apprenticeship route: earn-and-learn hiring

Hiring an apprentice is a genuine alternative to taking on an experienced tradesperson, particularly if you have the capacity to train. Apprentices split their time between on-the-job training with you and off-the-job training at a college or training provider (at least 20% of their contracted hours). The wage cost is significantly lower than a qualified worker.

The apprentice minimum wage for 2026/27 is £7.55 per hour for apprentices aged under 19 or in the first year of their apprenticeship. Apprentices aged 19 or over in their second year or beyond are entitled to the National Minimum Wage for their age band (£12.21/hour for 21 and over in 2026/27). Most trade businesses pay above the minimum to attract good candidates.

The government funds the majority of apprenticeship training costs:

• Apprenticeship Levy (large employers only) — applies if your annual payroll exceeds £3 million. You pay 0.5% of payroll into a digital account via HMRC and draw from it to fund approved training. Relevant if you buy a business with staff and cross the threshold, but not for most sole traders starting out.
• Co-investment (the default for small trade businesses) — if your payroll is under £3 million, the government pays 95% of the approved training cost and you pay just 5%. For a typical trade apprenticeship framework costing £15,000 over the programme, your contribution is £750 total. You also receive a £1,000 incentive payment from the government for hiring an apprentice aged 16–18.

The trade-off is clear: apprentices need more supervision, produce less billable output in the early months, and require you to actively support their training. But in two to three years you can produce a fully trained tradesperson who works exactly to your standards, understands your way of doing things, and already has loyalty to your business. For many trade business owners, an apprentice taken on at 17 becomes their most reliable long-term employee. Contact your local college or a training provider to find out which apprenticeship standards are approved for your trade and what the funding band covers.

TUPE: what happens if you buy another trade business

If you grow by acquiring another trade business — buying the customer list, contracts, and goodwill from a retiring plumber or electrician, for example — you need to understand TUPE. The Transfer of Undertakings (Protection of Employment) Regulations 2006 means that if you take over a business or a service contract that has employees, those employees transfer to you automatically on their existing terms and conditions. You cannot change their contracts, reduce their pay, or make them redundant simply because of the transfer.

In practice, buying a one-person trade business often does not trigger TUPE because there is no organised grouping of employees. But buying a business with two or more staff, or taking over a maintenance contract previously held by another company, very likely does. Take legal advice before completing any acquisition that involves staff. Mishandling TUPE creates Employment Tribunal claims that sit outside the normal two-year qualifying period — day one rights apply.

Health and safety: your obligations as an employer

As an employer you have a legal duty of care under the Health and Safety at Work Act 1974. That duty applies from the moment you have a single employee, regardless of the size of your business. The HSE can inspect, issue improvement or prohibition notices, and prosecute.

The minimum requirements for a small trade employer:

• Written Health & Safety Policy — required once you have five or more employees, but good practice to have from day one
• Risk assessments — written risk assessments for significant workplace hazards; must be documented once you have five or more employees
• COSHH assessments — for any chemical or hazardous substance your employee uses; you must brief them on each one
• Manual handling — training and assessment for any heavy or repetitive lifting
• Working at height — documented safe system of work for any work above ground level, however low
• First aid — an appointed first-aider (can be the employer) and a stocked first aid kit on each site
• Employers' Liability Insurance certificate — displayed at your premises or accessible electronically

Keep signed records of all induction training from day one. This matters if there is ever a workplace accident or an HSE investigation.

How Trade2Base helps when you grow to two people

Taking on a second person fundamentally changes your marketing calculus. When you were the only tradesperson, you could absorb the occasional quiet week personally. With an employee on the books at £37,000–£40,000 a year in employer costs, you need a consistent flow of work — not just enough for one person, but enough to keep both productive. That changes what you need from your marketing.

Attribution tracking becomes more important, not less. You need to know which channels — Google Ads, checkatrade, referrals, your website — are actually generating the jobs that pay for your employee, and which channels are costing you money without producing work. When margins are tighter and overhead is higher, spending £500 a month on a lead source that brings in two marginal jobs is a problem. You need that money on the channel producing ten profitable jobs.

Trade2Base tracks where your enquiries come from, which sources convert to booked jobs, and what revenue each channel is generating. With two people in the business, that data moves from useful to essential. You can see in real time whether your marketing is generating enough volume to keep both of you busy — and adjust before you have a quiet month eating into cash reserves.