Fixed-Term Employment Contracts: UK Employer Guide

At a glance

• Who uses this: employers hiring for a set period — maternity cover, a funded project, a busy season, or a defined task (correct as at June 2026).
• Key statute: the Fixed-term Employees (Prevention of Less Favourable Treatment) Regulations 2002 and the Employment Rights Act 1996 (correct as at June 2026).
• Notice: at least the statutory minimum under ERA 1996 s.86 — one week if employed under two years, then one week per full year up to twelve (correct as at June 2026).
• Max-term rule: after four years of continuous fixed-term employment, a further fixed-term renewal becomes permanent unless objectively justified (regulation 8) (correct as at June 2026).
• Comparator right: a fixed-term employee must not be treated less favourably than a comparable permanent employee without objective justification (regulation 3) (correct as at June 2026).

This is general legal information to help you act with confidence — it is not legal advice for your specific situation. For tailored guidance, speak to a regulated adviser or solicitor.

What a fixed-term employment contract is

A fixed-term employment contract is a contract of employment that ends on a set date, after a set period, or when a specific task or event is complete. The defining feature is the limiting event — the contract is built to end, rather than continue indefinitely.

Employers reach for fixed-term contracts when the need is genuinely temporary:

• covering an employee on maternity, paternity, adoption or long-term sick leave;
• staffing a project or grant-funded post with a defined end;
• meeting seasonal or peak demand;
• trialling a role tied to specific funding or a one-off contract win.

The contrast with a permanent contract is simple in form but important in substance. A permanent contract continues until either side ends it. A fixed-term contract has a built-in finish line. What surprises many employers is how little this changes the rights of the person doing the job. A full-time fixed-term employee is still an employee, with the contractual and statutory protections that status brings. If your need is genuinely open-ended, an indefinite employment contract is usually the cleaner choice — using a fixed term to "keep options open" tends to create problems rather than solve them.

Legal framework

Two sources of law do most of the work.

The Fixed-term Employees (Prevention of Less Favourable Treatment) Regulations 2002 (SI 2002/2034) are the dedicated rules. Two regulations matter most:

• Regulation 3 — the comparator rule. A fixed-term employee has the right not to be treated less favourably than a comparable permanent employee doing the same or broadly similar work at the same establishment, unless the difference is objectively justified. In practice this reaches pay, holiday, sick pay, pension access, bonuses and benefits. You can justify different treatment if, taken as a whole, the fixed-term employee's package is at least as favourable — but you have to be able to show it.
• Regulation 8 — the four-year rule. Successive fixed-term contracts cannot run indefinitely. We cover this in detail below.

The Employment Rights Act 1996 (ERA 1996) supplies the general employment framework that applies to fixed-term staff as much as anyone — the written statement of particulars, minimum notice (s.86), unfair dismissal (Part X), and the rule that the expiry of a fixed term without renewal counts as a dismissal (s.95).

The headline principle to carry through the whole contract: fixed term does not mean fewer rights. It means a defined end date, nothing more.

What the contract must cover

A robust full-time fixed-term contract should set out, at minimum:

• Job title and duties — the role and what it involves.
• Start date and the limiting event — either a fixed end date or an objective trigger ("until [named employee] returns from maternity leave", "on completion of the [project] grant"). An objective event is often safer than a guessed date.
• Pay — salary or rate, frequency, and any review.
• Hours — full-time hours, days, and any overtime arrangement.
• Holiday — annual leave entitlement, pro-rated where relevant, on the same basis as a comparable permanent employee.
• Notice — at least the statutory minimum under ERA 1996 s.86: one week's notice if continuously employed for one month to under two years, then one week for each complete year up to a cap of twelve weeks. You can offer more, but not less.
• Sick pay — your scheme, applied on the comparator basis.
• Confidentiality and intellectual property — who owns work product, and what stays confidential. This is the clause employers most often forget on a short contract, and it can be the most expensive omission.

By law, employees and workers are entitled to a written statement of employment particulars on or before their first day. A well-drafted contract delivers this and more. You can buy a professionally drafted template to start from — for example, a fixed-term employment contract from Net Lawman (rel="sponsored"). We may earn a commission if you buy from Net Lawman.

The four-year rule and permanent employment

This is the rule employers most often trip over.

Under regulation 8 of the 2002 Regulations, where an employee has been continuously employed on fixed-term contracts for four years or more and the contract is then renewed (or they are re-engaged on a new fixed-term contract) without a break in continuity, that latest contract takes effect as a permanent contract — unless the continued use of a fixed term is objectively justified.

Three points make this practical:

1. Continuity is what counts, not the number of contracts. Stacking three one-year contracts back-to-back can quietly cross the four-year line. Continuous employment is measured under Chapter 1 of Part 14 of the ERA 1996, and only continuity from 10 July 2002 onwards counts.
2. The conversion is automatic. You do not "decide" to make someone permanent at four years. If the test is met and there is no objective justification, the law treats them as permanent — whatever the paperwork says. An employee can ask you for a written statement confirming their status, and you must respond within 21 days.
3. "Objective justification" is a real bar, not a label. A genuine business reason — a post tied to specific external funding that genuinely ends, for example — can justify a further fixed term. "We prefer the flexibility" will not. A collective or workforce agreement can also vary the four-year default.

How to manage it: diarise the cumulative clock, not just each contract's end date. Review well before the four-year point and decide deliberately — convert to permanent, end the engagement, or document a genuine objective justification. Drifting into renewal on autopilot is how employers acquire permanent staff they did not mean to.

Non-renewal and redundancy rights

Here is the principle GOV.UK states quietly and many employers miss entirely: letting a fixed-term contract expire without renewing it is a dismissal in law.

Under ERA 1996 s.95(1)(b), an employee is "dismissed" when a limited-term contract terminates by virtue of the limiting event without being renewed under the same contract. So at expiry you are not simply parting ways — you are dismissing. That triggers several knock-on points:

• Unfair dismissal. A dismissal must be for a fair reason and handled fairly. As at June 2026, the right to claim ordinary unfair dismissal generally requires two years' continuous service (correct as at June 2026). Note: the Employment Rights Act 2025 reduces this qualifying period to six months for dismissals on or after 1 January 2027 — so this threshold is changing, and you should check the current position before relying on it.
• Redundancy. If the reason the fixed term is not renewed is that the work itself has ceased or diminished — the project ended, the post was cut — that is a redundancy. An employee with two or more years' continuous service may be entitled to a statutory redundancy payment, even though they were "only" fixed-term. Genuine maternity cover ending because the permanent employee returns is usually a fair reason that is not redundancy, but the facts decide it.
• Notice. Unless the contract ends exactly on its stated date and the contract is clear, give at least statutory minimum notice (s.86). A surprising number of disputes are about notice that should simply have been given.

A fixed-term employee also cannot be subjected to a detriment, or selected for non-renewal, because they are fixed-term — that is itself unlawful under the 2002 Regulations. For a worker's-eye view of these protections, see our guide to the rights of a part-time or fixed-term employee in the UK.

Common employer mistakes

1. Rolling contracts without review. Renewing each fixed term as a formality, with no eye on cumulative continuity, is the fast route into regulation 8. Set a calendar reminder against the four-year clock, not just each end date.
2. Skipping IP and confidentiality clauses. Short contract, short memory — and then the project's code, designs or client list walk out of the door. Fixed-term staff need the same IP-assignment and confidentiality protection as permanent staff; arguably more, because they leave sooner.
3. Ignoring the comparator rule. Quietly giving fixed-term staff less holiday, no access to the pension scheme, or no bonus, "because they're temporary", breaches regulation 3 unless you can objectively justify it. Benchmark against a comparable permanent colleague.
4. Assuming "fixed-term" means "no employment rights". It does not. Unfair dismissal, redundancy, the written statement, family-leave rights and discrimination protection all apply. Treating a fixed-term hire as disposable is the assumption that causes the most expensive claims.

Example: fictional

This example is fictional and for illustration only.

Northgate Studio Ltd wins an 18-month council contract and hires Priya on a full-time fixed-term contract "to end on completion of the Riverside project". The work goes well, so they renew her for a further year on another project, then a third year, then a fourth — each time on a fresh fixed-term contract, signed without a gap.

Six weeks before her fourth anniversary, Northgate's office manager queues up a fifth one-year contract. Their adviser stops them. Priya has now been continuously employed on fixed-term contracts for four years. Under regulation 8, a further renewal would take effect as a permanent contract unless Northgate can show an objective business reason for keeping the fixed term — and "we like the flexibility" is not one.

Northgate also realises that when an earlier project ended and they did not renew, that non-renewal was a dismissal under ERA 1996 s.95(1)(b). Because Priya had over two years' service and the work had genuinely ceased, that earlier expiry was a redundancy — and she should have had a redundancy payment and notice, which she never received. They take advice, correct the position, and decide deliberately whether to make her permanent or end the engagement properly. The lesson: track the cumulative clock and treat every expiry as the dismissal it legally is.

Last reviewed: June 2026 · Next review due: June 2027 or on legislative change.