UK Employment Contracts Explained 2026: Your Complete Guide

Q: What is the difference between a contract of employment and a contract for services?

A contract of employment creates an employer-employee relationship with full employment rights. A contract for services is used for self-employed contractors with fewer statutory protections. HMRC uses IR35 rules to assess employment status.

May 28, 2026 | 12 min read

UK employment contracts are the legal foundation of every working relationship — yet many employees sign them without fully understanding what they contain. In 2026, knowing your rights under your employment contract is more important than ever, with changes to employment law under the Employment Rights Act 2025 reshaping the landscape. This guide explains every key clause, the different types of employment contract, what must be included by law, red flags to watch for, and what to do if your employer breaches the agreement.

What Is a UK Employment Contract?

A UK employment contract is a legally binding agreement between an employer and an employee that sets out the terms and conditions of employment. It creates mutual obligations: the employee agrees to perform work; the employer agrees to pay for it and to comply with all agreed terms.

Employment contracts can be written, verbal, or implied through conduct — but a written contract is by far the most common and most advisable form. Since April 2020, employers have been legally required to provide a written statement of particulars to all employees and workers from day one of employment (previously this only applied after two months).

Importantly, a contract of employment is not the same as a “statement of particulars” (sometimes called a Section 1 statement, referring to section 1 of the Employment Rights Act 1996). The statement is a written summary of the key terms; the full contract may also include other incorporated documents such as a staff handbook, collective agreements, or specific policies.

Types of Employment Contract in the UK

There are several types of employment contract used by UK employers in 2026:

Permanent / full-time contract

The most common type — an open-ended contract with no fixed end date. You work agreed hours each week and receive a regular salary. Employment continues until either party gives notice to end it.

Fixed-term contract

Employment for a specific period (e.g., a 12-month maternity cover), for a specific project, or until a specific event occurs. Fixed-term employees have the same rights as permanent employees (including protection against less favourable treatment). If a fixed-term contract is renewed or continues for four or more years, the employee generally acquires permanent status automatically.

Part-time contract

Works the same way as a permanent contract but for fewer hours per week. Part-time workers have the legal right not to be treated less favourably than comparable full-time workers.

Zero-hours contract

The employer is not obliged to offer any minimum hours, and the worker is generally not obliged to accept any hours offered. Zero-hours contracts are controversial; under the Employment Rights Act 2025 (which comes into force in stages from 2026), workers on zero-hours contracts will have new rights to request guaranteed hours after a qualifying period of service.

Agency worker contract

The worker has a contract with the employment agency, not the end-user employer. After 12 weeks in the same role at the same employer, agency workers gain equal treatment rights on pay and working hours.

Casual / irregular hours contract

Similar to zero-hours but may specify a broader working pattern. Watch this space: the Employment Rights Act 2025 is bringing enhanced protections for irregular-hours workers.

What Must Be Included by Law

Since April 2020, the written statement of particulars must include the following information from day one:

Employer’s name and address
Employee’s name, job title, and start date
Rate of pay and when payment is made (weekly, monthly, etc.)
Hours of work (and any flexibility arrangements)
Holiday entitlement (and whether it includes bank holidays)
Sick leave and sick pay entitlement
Notice periods (both employer and employee)
Whether there is a collective agreement that affects the role
Whether the role is permanent, fixed-term, or temporary
Place of work (or statement that the employee will work at various locations)
Pension arrangements
Other paid leave (maternity, paternity, parental, adoption, etc.)
Training entitlement (from April 2020 onwards)

Some additional terms (disciplinary and grievance procedures, details of other applicable collective agreements, etc.) may be provided in a supplementary statement within two months.

Key Clauses Explained

Notice period

The notice period sets out how much advance warning either party must give to end employment. The legal minimum notice from an employer is one week per year of service (up to a maximum of 12 weeks), once you have worked for at least one month. Most contracts specify longer notice periods, particularly for senior roles. Your own notice period to the employer is also specified — commonly one to three months.

Probationary period

Most contracts include a probationary period (typically three or six months) during which either party can terminate employment with shorter notice. Performance is assessed during this time. Under the Employment Rights Act 2025, the qualifying period for unfair dismissal protection is being removed for most workers — a significant change that will apply to new starters from 2026 onwards.

Salary and pay review

The contract should state the annual salary or hourly rate, when it is paid, and whether there is a right to an annual pay review. Note: a contractual pay review clause does not guarantee an increase — it only guarantees the review will take place.

Holiday entitlement

The statutory minimum is 28 days per year (5.6 weeks) for full-time workers — this may or may not include the 8 UK bank holidays, depending on what your contract says. Many employers offer enhanced holiday (30–33 days). Part-time workers are entitled to a pro-rata equivalent.

Confidentiality

Most employment contracts include a confidentiality clause requiring you not to disclose commercially sensitive information (client lists, pricing, trade secrets) either during or after employment. These clauses are generally enforceable if they are reasonable in scope.

Restrictive covenants (post-termination restrictions)

These clauses attempt to limit what you can do after leaving — for example, not joining a direct competitor within six months, not soliciting former clients, or not poaching former colleagues. Restrictive covenants are only enforceable if they go no further than reasonably necessary to protect a legitimate business interest. Courts and employment tribunals regularly strike down overly wide restrictions.

Garden leave

Some contracts allow the employer to place you on “garden leave” during your notice period — you remain employed and continue to be paid, but you are not required (or permitted) to come to work. This prevents you from joining a competitor immediately after resignation while your notice runs.

Implied Terms and Custom and Practice

Not everything in your employment relationship is written down. UK employment law recognises that certain terms are implied into every contract, whether or not they appear in writing:

Mutual trust and confidence: Both parties must not, without reasonable cause, act in a manner calculated or likely to destroy or seriously damage the relationship of trust and confidence. This is the basis of many constructive dismissal claims.
Duty of care: Employers have an implied duty to take reasonable care of employees’ health and safety.
Duty to pay wages: Even without a written contract, an implied term requires the employer to pay for work done.
Custom and practice: If your employer has done something consistently for a long period (e.g., paying an annual bonus every year without fail), it may have become an implied contractual term even if it started as a discretionary benefit.

Can Your Employer Change Your Contract?

Generally, a UK employer cannot unilaterally change the terms of your employment contract without your agreement. If they try to do so — for example, by cutting your pay, changing your working hours, or altering your job duties significantly — this is a breach of contract.

In practice, employers seeking to change contractual terms must:

Consult with affected employees and explain the business reason
Seek agreement (ideally in writing)
If agreement cannot be reached, they may terminate existing contracts and offer re-engagement on new terms — but this carries the risk of unfair dismissal claims if done without proper process

If your employer imposes a change without agreement and you continue working, you risk being deemed to have “accepted” the change by conduct. If you wish to resist it, you should object in writing promptly.

Breach of Contract: Your Rights

If an employer materially breaches your employment contract — for example, failing to pay the agreed salary, demoting you without cause, or fundamentally changing your role — you have several options:

Raise a formal grievance internally under the employer’s grievance procedure
Resign and claim constructive unfair dismissal at an Employment Tribunal (if the breach is serious enough to constitute a repudiatory breach)
Bring a breach of contract claim at an Employment Tribunal (up to £25,000) or in the county court (for higher amounts)
Claim unlawful deduction from wages if the breach relates to pay

Before taking formal steps, seek advice from ACAS (free) or a specialist employment solicitor. Many employment lawyers offer a free initial consultation.

Red Flags to Watch Out For

Before signing a UK employment contract, look out for these warning signs:

No written contract at all. You have a right to a written statement from day one. An employer who refuses to provide one is already in breach of the law.
Excessively long post-termination restrictions. Non-compete clauses of more than 6–12 months are often unenforceable and should be questioned.
A “right to vary” clause with no limits. A clause saying the employer can change any term “at any time and for any reason” should be treated with extreme caution.
Salary stated as a range, not a fixed figure. Your salary should be a specific amount. A range without explanation of what determines the actual rate is unusual.
Holiday entitlement below 28 days (pro rata for part-time). This is below the legal statutory minimum and would be unenforceable.
No mention of pension. Auto-enrolment is a legal requirement for eligible workers. If the contract doesn’t mention a pension, ask about it before signing.

Employment Rights Act 2025: What Changes in 2026

The Employment Rights Act 2025, which received Royal Assent in 2025 and comes into force in stages from 2026, brings the most significant changes to UK employment law in a generation. Key changes relevant to employment contracts include:

Day-one unfair dismissal rights: The current two-year qualifying period for most unfair dismissal claims is being removed. From the date of commencement, employees will have protection from day one (though different rules apply during the probationary period).
Guaranteed hours for zero/low-hours workers: Workers on irregular or zero-hours contracts will have the right to request a contract reflecting their average hours after a qualifying reference period.
Enhanced flexible working rights: The right to request flexible working (already a day-one right since April 2024) is being strengthened, and employers will face tighter timescales and stronger justification requirements for refusals.
Strengthened rights against dismissal during collective redundancy: New protections against fire-and-rehire practices.

These changes make it more important than ever to understand exactly what your employment contract says — particularly during any probationary period and around flexible working provisions.

Now that you understand the key terms of a UK employment contract, take the next step: browse current UK job vacancies on UK Jobs Alert and find a role with terms that work for you. You can also read our guide on how to write an ATS-friendly CV to make sure your application gets past automated screening.

Frequently Asked Questions

Is a verbal employment contract legally binding in the UK?

Yes. A verbal employment contract is legally binding in the UK, though it is much harder to enforce because the terms are difficult to prove. Since April 2020, all employers must provide a written statement of particulars on day one of employment, regardless of whether there is also a written contract.

How long does an employer have to provide a written contract in the UK?

Since April 2020, employers must provide a written statement of particulars on or before the employee’s first day of work. This replaced the old rule that allowed employers two months to provide the statement.

Can my employer change my contract without my consent?

Generally no. Changing contractual terms without consent is a breach of contract. Employers must consult, seek agreement, and if necessary follow a proper process (including potential redundancy or re-engagement procedures) to lawfully vary employment contracts.

What is the difference between a contract of employment and a contract for services?

A contract of employment (also called a contract of service) creates an employer-employee relationship with full employment rights. A contract for services is used for self-employed contractors and freelancers, who have fewer statutory protections. HMRC uses the IR35 rules to assess whether an individual claiming contractor status is genuinely self-employed or is effectively an employee.