Employment Contracts Getting Them Right - Essential Terms, Common Pitfalls & Practical Tips

Written Statement of Particulars

Every employee must receive a written statement of employment particulars from their first day of work.  That's the law under section 1 of the Employment Rights Act 1996, as significantly strengthened by the Employment Act 2002 and then again by the Good Work Plan reforms that came into force in April 2020. Get this wrong, and you're already on the back foot if anything goes wrong later.

There's a common misconception that the statement and the employment contract are the same thing. They're not and the difference matters. The written statement is a statutory document: it must contain certain prescribed information by law. A contract of employment, on the other hand, is the legal agreement between you and your employee, which may include many additional terms — some written, some implied by law or custom. In practice most employers combine both into a single signed document, which is perfectly acceptable and usually the sensible approach.

What Goes in the Statement and When

Since April 2020, the rules split the required particulars into two groups: those that must be provided on or before day one, and those that can follow within two months of the start date. The table below sets out exactly what falls into each category.

Employment Particulars Day One

Employment Particulars (Within 2 Months of Start)

What Happens If You Don't Issue a Written Statement of Particulars?

An employee can bring a tribunal claim solely for failure to provide a statement — even if they have no other grievance. The tribunal can award between two and four weeks' pay (capped at £700 per week from April 2026) where another successful claim is brought. More practically, the absence of a written statement almost always works against the employer in any disputed case: if you can't show what was agreed, a tribunal will make its own findings about the terms.

Employees vs Workers - Statement of Particulars

The day-one right to a written statement now extends to workers as well as employees — a change brought in by the Good Work Plan. So if you engage zero-hours workers or casual workers rather than full employees, they're entitled to a statement too. The content will differ (workers don't have the same notice rights, for example), but the obligation to put something in writing from day one is the same.

Key Employment Contractual Terms

The best employment contracts are clear, specific, and drafted for your business — not downloaded from a generic template and never revisited. Here are the terms that most often cause problems if they're left vague.

Pay

You must state the rate or scale of pay and how it's calculated. For hourly-paid staff, make sure the rate is at least the National Living Wage — from April 2026 that's £12.71/hr for workers aged 21 and over. The 18-20 rate is £10.85/hr, and the under-18/apprentice rate is £8.00/hr. Always specify pay frequency (weekly, monthly), the method of payment, and any entitlement to overtime, commission, or bonus  including whether a bonus is discretionary (which means you retain the right to pay nothing in any given year, provided you don't exercise that discretion capriciously or in bad faith).

Working Hours

State the normal hours clearly. If you want flexibility — for example, the ability to require overtime or vary shift patterns — the contract needs to say so expressly. Courts and tribunals won't imply a right to require overtime if nothing in writing supports it. For workers whose hours genuinely vary, say that, and ensure you're complying with the Working Time Regulations 1998 — in particular the 48-hour average weekly limit (unless the worker has signed a valid opt-out) and rest break entitlements.

Holiday

The statutory minimum is 5.6 weeks' paid leave per year (28 days for full-time workers including the eight bank holidays). Many employers offer more. Your contract needs to specify the entitlement, the holiday year, how it accrues during the first year, and what happens to unused leave on termination.
Since the reforms following the Harpur Trust v Brazel judgment and subsequent government
amendments to the Working Time Regulations, be especially careful about how you calculate holiday pay for workers with irregular hours — the 12.07% rolled-up holiday pay method is now lawful again for irregular-hours workers, but only if clearly stated in the contract.

Notice Periods

Statutory minimum notice is one week per complete year of service up to a maximum of 12 weeks but only after the employee has one month's service. Many employers set longer contractual notice periods, which is fine as long as both sides' notice is specified. If you want the ability to pay in lieu of notice (PILON), that needs to be a contractual right — otherwise making a PILON on termination can technically be a breach of contract, which matters most if you're relying on post-termination restrictive covenants.

Job Title and Location

A flexible job title clause can be useful - something like "and such other duties as the Company may reasonably require"  but don't overdo it. Courts look at the substance of the role, not just the label. Similarly, if you want mobility across sites or locations, include a mobility clause  but it must be exercisable reasonably, with reasonable notice.

Restrictive Covenants — A Brief Overview

Post-termination restrictions (non-competes, non-solicitation clauses) must be included in the
original contract or added later with fresh consideration to have any legal force. You cannot simply  add them after the event. See Section 7 for the full picture on drafting and enforcing restrictive covenants.

Express vs Implied Terms in Contract of Employment

Every employment contract contains terms that are never written down. Some are implied by statute - the right not to be unfairly dismissed, for example. Others are implied by the common law because courts consider them necessary to give business efficacy to the relationship, or because they reflect established custom and practice in the workplace.

Custom and Practice Contractual Terms

This is where employers are often surprised. If you've always paid a Christmas bonus for ten years without ever saying it's discretionary, an employee can argue it has become an implied contractual term. The same applies to other consistent practices, always allowing an extra day's holiday, always paying a certain shift allowance. The test is whether the practice is regular, well-known, and clearly applicable. If there's any doubt, put it in writing and state expressly that it's non-contractual and at the employer's discretion.

Mutual Trust and Confidence

The implied duty of mutual trust and confidence is one of the most powerful implied terms in
employment law. It runs both ways: the employee owes duties of fidelity and confidentiality; you as employer must not, without reasonable and proper cause, conduct yourself in a manner that is likely to seriously damage or destroy the relationship. A breach by the employer can give rise to a constructive dismissal claim, even if every express term of the contract was technically complied with.

What does that mean in practice? Behaving inconsistently, making impossible demands, humiliating an employee in front of colleagues, or unilaterally cutting pay — all of these can amount to a breach, even if your contract says nothing about them.

Ambiguous Contractual Terms

When a contract term is ambiguous, courts will construe it against the party who drafted it and that's almost always the employer. So vague drafting is your risk, not the employee's. If a clause could be read two ways, assume a tribunal will pick the one that favours the employee and draft accordingly. Precision costs nothing at the outset but saves an enormous amount later.

Watch Out For Non-Contractual Policies

Your staff handbook, disciplinary procedure, and other policies are generally non-contractual but only if you say so. If the contract says 'the Company's sick pay scheme as set out in the handbook applies', the handbook terms may become incorporated by reference. Always be deliberate about what you incorporate and what you don't. Policies you want to change easily should never be incorporated.

Changing Contract Terms

You cannot unilaterally change a contract of employment. That should be obvious, but it catches many employers out - particularly small businesses that assume they can just send a letter saying "we're changing your hours from next month". You can't. Not without the employee's agreement or a legitimate process.

Variation by Consent - Employment Contract

The cleanest way to change a contractual term is with the employee's express agreement. Ideally get it in writing a signed amendment to the contract or a new contract altogether. Consider whether any change requires fresh consideration (something of value in return), particularly if the change is detrimental to the employee. Continued employment may suffice as consideration where the benefit is mutual, but it's safer to offer something tangible for significant changes.

Flexibility Clauses

A well-drafted flexibility clause allowing you to vary duties, location, or hours within defined
parameters - gives you some room to manoeuvre without needing individual agreement every time. But flexibility clauses must be exercised reasonably. A clause saying you can vary hours 'as required by the business' doesn't give you unlimited power: impose changes that no reasonable employee would accept and you risk a constructive dismissal claim.

Fire and Rehire — The New Landscape

Where an employee won't agree to a change, some employers have dismissed them and immediately offered re-engagement on new terms — so-called 'fire and rehire'. That practice is still legally possible but has become significantly riskier under the Employment Rights Act 2025.

The 2025 Act introduces new protections making dismissal for failing to agree to a contract change automatically unfair in most circumstances, unless the employer can demonstrate that the reason was to prevent or address a financial difficulty that threatened the viability of the business, and that the employer consulted with affected employees or their representatives as long as was reasonably practicable. The bar for justifying fire and rehire is now much higher, and the reputational risk remains considerable regardless.

Critical Risk: Fire and Rehire After the Employment Rights Act 2025

• Dismissal to impose new terms is now automatically unfair in most cases.
• The 'viability of the business' exception is narrow and must be evidenced.
• Consultation with employees or their representatives is required before any dismissal.
• Expect significant Employment Tribunal exposure plus reputational damage if you proceed without
proper advice.

Collective Consultation

If 20 or more employees face dismissal (including fire and rehire scenarios) within a 90-day period, you must collectively consult under TULRCA 1992. The minimum consultation period is 30 days for 20-99 affected employees and 45 days for 100 or more. Failure triggers a protective award of up to 90 days'  gross pay per employee — with no cap on the week's pay. This is a separate obligation that sits alongside unfair dismissal.

Fixed-Term Contracts

A fixed-term contract expires on a specified date, on the completion of a specific task, or on the occurrence of a specific event. They're common for maternity cover, project work, or seasonal needs and they can be perfectly appropriate when used for a genuine fixed-term purpose.

Equal Treatment

Under the Fixed-term Employees (Prevention of Less Favourable Treatment) Regulations 2002, fixed-term employees are entitled to the same contractual terms as comparable permanent employees  unless the difference can be objectively justified. This is assessed on an overall package basis (total terms and conditions rather than clause by clause), which gives some flexibility, but you shouldn't  assume that a fixed-term employee can simply be excluded from a pension, bonus, or other benefit without justification.

Expiry of a Fixed-Term Contract is a Dismissal

This surprises many employers: when a fixed-term contract expires and is not renewed, that constitutes  a dismissal in law. Once the employee has two years' qualifying service, they're entitled to claim unfair  dismissal if the non-renewal isn't fair. Non-renewal of a fixed-term contract that was always intended to be fixed-term is potentially a fair 'some other substantial reason' dismissal — but you still need to follow a fair procedure.

The Four-Year Rule and Automatic Permanency

The most important trap with rolling fixed-term contracts: if an employee has been continuously employed on successive fixed-term contracts for four years or more, the contract is deemed to be  permanent — unless the employer can objectively justify continued use of fixed terms. This is automatic: you cannot contract out of it. If the employee then requests a written statement of their permanent status (which they can do under regulation 9 of the 2002 Regulations), you must provide one.

Rolling Fixed-Term Contracts: Practical Warning

Don't keep rolling fixed-term contracts thinking you're avoiding employment rights. After four years, you've probably got a permanent employee anyway — and one who's been with you long enough to have full unfair dismissal protection. Track the length of all fixed-term engagements and review them before the four-year mark.

Redundancy Rights

Fixed-term employees with two or more years' service are entitled to a statutory redundancy payment on non-renewal, in the same way as permanent employees. You cannot include a waiver of statutory redundancy rights in a fixed-term contract — any such clause is unenforceable.

Zero-Hours Contracts - Employment Contracts

Zero-hours contracts remain lawful and can be genuinely appropriate for businesses with genuinely  variable staffing needs — hospitality, retail, care, events. But they're no longer the risk-free option some employers imagined, and the Employment Rights Act 2025 has introduced significant new rights for workers on these arrangements.

Current Legal Position on Zero Hour Contracts

A zero-hours contract is one under which the employer does not guarantee any minimum hours. The worker is under no obligation to accept work when offered. Exclusivity clauses — preventing zero-hours workers from working elsewhere — have been unenforceable since the Small Business, Enterprise and Employment Act 2015. Workers on zero-hours contracts still accrue annual leave, are entitled to the National Minimum Wage, and — depending on the facts may well qualify as 'workers' rather than independent contractors, with all the associated rights.

The New Right to Guaranteed Hours (Employment Rights Act 2025)

This is the big change. Under the Employment Rights Act 2025, workers on zero-hours or
low-guaranteed-hours contracts who work a regular and consistent pattern for a reference period will gain the right to be offered a contract that reflects those hours. The precise reference period and implementation detail will be set out in secondary legislation, and as of spring 2026 the Government is still consulting on the specifics  but the direction of travel is clear.

In broad terms, if someone regularly works 25 hours a week, they will be able to request a contract that guarantees 25 hours. You can decline where there are genuine business reasons but that must be a genuine and documented business reason, not a pretext to maintain cheap flexibility. Workers will also gain the right to reasonable notice of shift changes and cancellations, and to compensation when shifts are cancelled at short notice.

What to Do Now

• Review your zero-hours arrangements and identify which workers have a settled regular pattern.
• Audit your shift scheduling practices — short-notice cancellations are about to become expensive.
• Consider whether some zero-hours workers would be better placed on a low guaranteed-hours contract from the outset.
• Watch the secondary legislation as it emerges — the implementation timetable will be confirmed by Government.

Employment Status Matters

Not everyone on a zero-hours contract is a 'worker' — some may be genuinely self-employed. But if someone is told what to do, when to do it, and how to do it, with the company's equipment, working alongside direct employees, the chances are they're a worker at minimum, and quite possibly an employee. Get employment status wrong on your zero-hours pool and you could face back-dated holiday pay claims, NMW liability, and employer NI contributions. The risk is real.

Restrictive Covenants - Contract of Employment

Restrictive covenants are contractual clauses that restrict what an employee can do after they leave you.
The four main types are:
• Non-compete: prevents joining a competitor or setting up a competing business
• Non-solicitation: prevents approaching your clients or customers
• Non-dealing: prevents doing business with your clients even if the client makes the approach
• Non-poaching: prevents recruiting your employees

The Enforceability Test for Restrictive Covenenants

The starting point in English law is that any restraint of trade is void as contrary to public policy. Restrictive covenants are only enforceable if they protect a legitimate business interest and are reasonable in scope — both in the activities they restrict and the duration of the restriction. A 12-month  worldwide non-compete for a junior sales executive is almost certainly going too far. A 6-month non-solicitation clause for a senior account manager with close client relationships may be perfectly reasonable.

Courts will not rewrite an unreasonable covenant to make it enforceable (unless the offending part can be 'blue-pencilled' out cleanly, leaving the rest intact). If your non-compete is too wide, you may end up with no protection at all. Draft with precision from the start.

Garden Leave

Garden leave is different from a restrictive covenant — it operates during the notice period rather than after it. If you place an employee on garden leave, they remain employed and paid but are asked not to work, contact clients, or join a competitor. It's a powerful tool because the employee is still employed and bound by all their duties including fidelity and confidentiality. But you can only do it if the contract gives you that right and any period of garden leave will typically count towards (and reduce) the period of any post-termination restriction.

What Legitimate Business Interest Means in Practice

The courts recognise two main categories of legitimate interest: trade secrets and confidential
information; and stable client connections. Not every employee has access to protectable confidential information, and not every employee builds genuine client relationships. Think about the actual role before reaching for a template covenant. A warehouse operative doesn't need a non-solicitation clause. A senior consultant who has spent years developing client relationships very likely does.

Government Reform Proposals

The previous Conservative Government consulted on limiting non-compete clauses to a maximum of three months. Those proposals were not implemented before the 2024 election and have not been taken forward by the current Government. However, the direction of travel in policy terms is towards shorter, narrower restrictions — particularly at lower salary levels. Keep an eye on developments, especially if you rely heavily on non-compete protection for key staff.

Restrictive Covenants Drafting Tips

Restrictions should be graded by seniority — the more senior and connected the role, the wider the protection you can justify. Review restrictions when employees are promoted or their role changes significantly: a covenant entered into on appointment as a junior may not be enforceable once someone has risen to director level, because the legitimate interest it protects has changed. Get fresh consideration for any material upgrade to restrictions.

Common Mistakes With Employment Contracts And How to Avoid Them

Most employment contract disputes don't start with a dispute about the contract. They start with a performance problem, a redundancy, or a resignation — and it's only then that everyone looks at what was actually agreed. By that point, the damage is already done. Here are the mistakes that come up most often.

Not Issuing Contracts On Time

Still the most common failure. The obligation to provide a written statement on day one has been in force since April 2020, yet a significant number of small employers — particularly those who recruit informally — still fail to do it. Often the contract is sent weeks into employment, sometimes never at all. If the employee never signs it and a dispute arises, you'll have no written record of what was agreed.

Using the Same Contract Template for Everyone

A template is a starting point, not a finished product. A contract drafted for a full-time office-based employee should not be used unchanged for a part-time homeworker, a senior manager, or a zero-hours catering assistant. Each role carries different obligations, different risks, and different practical needs. Take the time to tailor.

Vague or Missing Terms on Employment Contract

Silence in a contract is almost never neutral — it will be filled by statute, case law, or a tribunal's inference. Common gaps include: what happens to accrued but untaken holiday on termination; whether overtime is paid or unpaid; what the sickness absence procedure is; and how bonus or commission is calculated (particularly on termination). If it matters, write it down.

Clauses That Can't Be Enforced on Employment Contract

Contracts often contain clauses that look authoritative but are legally worthless — or worse, that create unintended liability. Examples include: blanket deductions from wages clauses that don't comply with the requirements of the Employment Rights Act 1996 section 13; restrictive covenants that are far too wide to be enforced; exclusion clauses that attempt to contract out of statutory rights; and disciplinary procedures incorporated into the contract that you then can't follow precisely.

Not Updating Contracts After Changes

Employment relationships evolve. An employee gets promoted, takes on new responsibilities, switches to part-time, or moves to a different role. Each of these changes should trigger a contract review. If the written terms no longer reflect reality, the actual terms may have been varied by conduct and you may have given away more than you realised.

Common Mistake with Employment Contracts & Risk

The Cheapest Advice You'll Ever Take Regarding Employment Contracts

Getting contracts right at the start costs a fraction of what a single Employment Tribunal claim costs to defend. The average Tribunal award for unfair dismissal sits in five figures; the compensatory award cap from April 2026 is £115,115. Add in management time and legal fees and the total cost of a contested claim typically exceeds £20,000 — for cases that often arise directly from unclear or missing contractual terms.

Next Steps 

If contract breaches occur  → review disciplinary procedures

If changes impact working patterns → see flexible working rules

If disputes arise → understand the employment tribunal process