Writing Employment Contracts in the UK: What Employers Should Include

Writing an employment contract sounds simple until you are about to hire someone and realise how much can go wrong. Many UK employers copy an old template, leave key terms vague, or mix up employees, workers and contractors. Others promise flexible arrangements in interviews, then hand over a contract that says something different. That is where disputes often start.

A well-drafted contract does more than set pay and hours. It helps you meet your legal obligations, manage expectations from day one, and protect the business if the role changes or the relationship ends. If you are hiring your first worker, growing a team quickly, or tidying up documents after informal hiring, this guide answers the practical question of how to write employment contracts in a way that works for UK businesses. It covers what to include, the legal issues to check before you sign, and the mistakes that regularly trip employers up.

Overview

An employment contract should reflect the real working arrangement, not just what is easiest to pull from a template. In the UK, employers also need to provide written particulars of employment, and the safest approach is usually to build those into a clear written contract from the start.

The contract should be specific enough to avoid confusion, but flexible enough to let your business operate without creating accidental promises you cannot keep.

• Confirm whether the person is an employee, worker or self-employed contractor before you draft anything.
• Set out the statutory written particulars, including pay, hours, holiday, place of work and start date.
• Make sure clauses on probation, notice, sick pay, bonus, hybrid working and overtime reflect what actually happens in your business.
• Use tailored clauses for confidentiality, intellectual property, post-termination restrictions and disciplinary rules where relevant.
• Check that handbooks, workplace policies and side letters do not contradict the contract.
• Give the contract before the person starts or, at the latest, from day one, and keep signed copies on file.

How UK Employers Should Draft Employment Contracts

Writing an employment contract properly means turning the real job you are offering into a clear legal document that matches UK employment law and your day-to-day business needs.

That sounds obvious, but founders often draft around what they hope the role will become, rather than what the worker will actually do in the first six months. If the contract says one thing and the working arrangement says another, the paper version may not save you later.

Start with employment status

Before you hire your first worker, or before you classify someone as a contractor, decide what status they genuinely have. In the UK, the label on the contract matters less than the reality.

An employee will usually work under your control, personally perform the work, and have an ongoing obligation to do work and be paid for it. A worker may have some employment rights, but not the full set. A self-employed contractor usually has more independence and commercial risk.

If you call someone a contractor but require fixed hours, close supervision, personal service and ongoing commitment, the main risk is that their legal status may not match your paperwork. That can affect holiday pay, notice, unfair dismissal rights, tax treatment and other obligations.

Know the minimum terms that should be in writing

UK employers must provide a written statement of employment particulars to employees and workers. In practice, most businesses include these particulars within the employment contract itself so there is one main document.

Your contract will usually need to cover:

• Names of the employer and employee.
• Start date and, if relevant, continuous employment date.
• Job title or a short description of duties.
• Place of work, including whether relocation may be required.
• Pay, payment intervals and any variable remuneration.
• Hours and days of work, including whether they can vary.
• Holiday entitlement and holiday pay details.
• Sick leave and pay arrangements.
• Pension information.
• Probation terms, if used.
• Notice periods.
• Length of contract, if it is fixed-term.
• Training requirements, where applicable.
• Disciplinary and grievance information.

If these points are vague or missing, you may create uncertainty at exactly the moment you need clarity, such as when someone wants to work remotely from a different location, disputes overtime, or leaves during probation.

Draft for the real founder moments

The best contracts answer the questions that come up in normal business life. Before you sign, think about what usually causes friction in your team or industry.

For example, if your staff handle client lists, code, formulas, pricing models or strategy, confidentiality and intellectual property clauses matter. If the role is commission-based, the bonus wording needs to state when entitlement arises and whether it is discretionary. If hybrid working is part of the offer, say whether homeworking is contractual or discretionary.

This is where founders often get caught. They agree practical arrangements in emails or interviews, then use a generic contract that does not match those promises.

Decide what goes in the contract and what sits in policies

Your contract should contain the core legal terms of employment. Policies and handbooks can cover operational detail that may need to change more often.

That usually means the contract deals with the essentials, while policies may cover:

• Disciplinary and grievance procedures.
• IT and communications use.
• Data protection expectations.
• Hybrid working guidance.
• Family leave processes.
• Expenses rules.
• Anti-harassment and equality standards.

This split helps because changing a policy is often easier than changing a contractual term. Still, you need to draft carefully. If your handbook says a benefit is guaranteed, or your contract says policies are contractually binding, you may accidentally turn guidance into a legal promise.

Legal Issues to Check Before Staff Sign

Before you sign a contract, make sure every important clause is lawful, clear and consistent with how the role will actually work.

Many employment disputes are not caused by one dramatic clause. They start with small drafting problems, such as unclear working hours, missing flexibility wording, or a notice clause that conflicts with probation arrangements.

Pay, hours and holiday

Pay terms should do more than state an annual salary. They should explain when payment is made, whether overtime is paid, and what happens if hours vary.

If the role includes commission, shift allowances, bonuses or overtime, spell out:

• How each payment is calculated.
• Whether it is guaranteed or discretionary.
• When it is earned.
• Whether the employee must still be employed and not under notice on the payment date.

Holiday clauses should also be precise. State the holiday year, entitlement, rules for carry-over, how holiday is booked, and what happens on termination. If the contract is silent, you leave room for disagreement later.

Probation and notice

Probation clauses should match how you actually manage new hires. If you want a shorter notice period during probation, say so clearly. If probation can be extended, include that power and explain who decides.

Notice clauses matter at both ends of the relationship. Before you hire a senior employee, think about the practical handover period you would need if they resigned, and the cost of paying notice if you ended the employment.

Check that your notice terms do not fall below the statutory minimum. You can offer more generous terms, but not less.

Place of work and flexibility

Hybrid and remote working arrangements often cause problems because the contract is too casual. If someone works partly from home, say where their normal place of work is and whether homeworking is a permanent contractual right or a discretionary arrangement.

If the business may need someone to work at another site, include a carefully drafted mobility clause. Do not assume that a broad line saying you can move them anywhere will always be enforceable. The wording still needs to be reasonable in context.

Confidentiality and intellectual property

If employees create valuable work, your contract should deal clearly with ownership and use of that work product. This is especially important for software, content, product design, research, databases and branding materials.

A good clause usually addresses:

• What confidential information includes.
• The employee's duty not to misuse or disclose it.
• Who owns work created in the course of employment.
• The employee's obligation to return company property and data when employment ends.

Before you rely on a verbal promise that “everything belongs to the company”, put the position in writing. It is easier to sort this out before the relationship starts than after someone leaves with access to key materials.

Restrictive covenants

Post-termination restrictions can help protect client relationships, confidential information and team stability, but they need careful drafting. A clause that is too broad may be hard to enforce.

If you use non-compete, non-solicitation or non-poaching restrictions, tailor them to the employee's role, seniority and access to sensitive information. A junior administrator and a senior sales director rarely need the same level of restriction.

This is not an area for blanket wording copied from another business. The reasonableness of the restriction matters.

Disciplinary, grievance and dismissal process

Your contract should tell staff where to find the disciplinary and grievance procedures, even if the detailed process sits in a handbook. This helps show that you have communicated the framework clearly.

You should also check whether the contract gives the business practical options if the relationship breaks down, such as:

• Payment in lieu of notice.
• Garden leave.
• The right to require return of devices and documents immediately.

These clauses can be very useful when a departure is sensitive or a staff member has access to clients and confidential material.

Consistency with other documents

A contract should not sit in isolation. Before you sign, compare it against the offer letter, recruitment advert, interview notes, bonus scheme, handbook and any side agreement.

If the offer promised fully remote work but the contract requires office attendance five days a week, you have a problem. If the handbook says bonuses are discretionary but the contract says they are guaranteed, you have another. Consistency matters because employees often rely on the whole paper trail, not just the final contract.

Common Employment Contract Drafting Mistakes

The most common mistake is using a generic contract that does not fit the role, the worker's status or the way your business really operates.

That mistake then triggers others. Employers often discover the weakness only when there is a resignation, a performance issue, or a disagreement about pay or flexibility.

Copying old templates without updating them

A contract that worked three years ago may be out of step with your business now. You may have introduced hybrid working, new bonus structures, different software, or a wider customer base. The old wording may not cover any of that.

Templates also often contain clauses that look useful but are internally inconsistent. One clause says overtime is included in salary, another says overtime is paid. One clause says the handbook is non-contractual, another says staff must comply with all handbook rules as contractual obligations.

Before you sign, read the contract as if you were the employee joining tomorrow. If a term would confuse them, it may confuse a tribunal too.

Calling someone self-employed to keep things flexible

Founders sometimes try to avoid employment obligations by using contractor agreements for people who are really part of the team. The intention is usually speed and flexibility, not bad faith, but the legal risk remains.

If the individual works regular hours, uses your equipment, reports into your managers and cannot send a substitute, the label “contractor” may not hold up. This is where worker status problems begin.

Before you classify someone as a contractor, check the actual arrangement rather than the commercial preference.

Leaving too much to verbal discussions

Verbal promises create trouble because people remember them differently. A founder may say, “we can review salary in three months” and mean “we will consider it”. The employee may hear “a pay rise is guaranteed after probation”.

Where a point matters, record it clearly in the contract or a written side letter. This applies especially to:

• Remote working arrangements.
• Commission and bonus entitlement.
• Probation extensions.
• Training repayment terms.
• Car allowance or benefits.

Before you rely on a verbal promise, decide whether it should be documented properly.

Using overreaching restrictions

Some employers insert very wide non-compete clauses into every contract and assume they will deter departures. The problem is that an unrealistic restriction may be difficult to enforce and may distract from better protections, such as confidentiality, notice, garden leave and client non-solicitation clauses.

A narrower, role-specific restriction is often more useful than a dramatic clause that goes too far.

Ignoring practical administration

Even a good contract can become a weak point if the business handles it badly. Problems arise when staff never sign, different versions circulate, or managers make exceptions by email that contradict the written terms.

Good administration usually means:

• Issuing the contract before the start date where possible.
• Making sure the correct legal employer is named.
• Keeping a signed copy and version history.
• Training managers not to make off-the-cuff contractual promises.
• Reviewing templates when your hiring model changes.

Small businesses often underestimate this step. Yet when a dispute appears, document control becomes very important very quickly.

FAQs

Do all UK employees need a written contract?

Employees and workers are entitled to written particulars of employment, and most employers deal with this through a written contract. A full written contract is the safest practical approach because it puts the key terms in one place.

Can I use the same employment contract for every employee?

Not usually. Some core terms may be similar, but roles differ in seniority, pay structure, confidentiality risk, intellectual property issues and working patterns. The contract should be adapted to the role.

What is the difference between an employment contract and a staff handbook?

The contract sets the core legal terms of employment. The handbook usually contains workplace policies and procedures. The wording needs care so that non-contractual policies do not accidentally become binding contractual promises.

Can I change an employment contract after someone starts work?

You cannot assume you can change terms unilaterally. Some minor changes may be allowed under clear flexibility clauses, but many changes require consultation and agreement. The safest route depends on the clause and the circumstances.

What should I do before hiring my first worker?

Decide the worker's status, prepare a tailored employment contract that matches the real role, line up your policies, and check that pay, holiday, hours, probation and confidentiality terms are clear before the start date.

Key Takeaways

• How to write employment contracts properly starts with the real working arrangement, especially the difference between employees, workers and contractors.
• A UK employment contract should include the required written particulars and reflect how pay, hours, holiday, notice and probation actually work in your business.
• Clauses on confidentiality, intellectual property, hybrid working, bonuses and restrictive covenants should be tailored to the role, not copied blindly from a template.
• The contract, handbook, offer letter and any side promises need to be consistent before you sign.
• Good drafting and good document management both matter, especially before you hire your first worker or before you classify someone as a contractor.

If you are preparing employment contracts and want help with worker classification, tailored contract terms, confidentiality and IP clauses, or restrictive covenants, you can reach us on 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.