Comparison · 2026/27
Probationary Period vs Fixed-Term Contract
A probationary period is a trial phase at the start of an otherwise permanent job; a fixed-term contract is designed to end on a set date or when a task finishes. Both can leave a worker with less job security than a confirmed permanent role, but for very different reasons. This guide compares notice, rights and what happens at the end.
At a Glance
| Feature | Probationary Period | Fixed-Term Contract |
|---|---|---|
| Underlying contract | Permanent, open-ended | Ends on set date/task |
| Purpose | Assess suitability | Cover a defined period/project |
| Notice to end early | Often shorter than post-probation | Contract-specific, or none needed at expiry |
| Ends automatically? | No — converts to full permanent terms | Yes, on expiry date |
| Non-renewal counts as dismissal? | N/A | Yes, in law |
| Becomes permanent after 4 years? | Already permanent | Yes, under 2002 Regulations |
How Probationary Periods Work
A probationary period sits at the start of a permanent contract and is used to formally review performance, conduct and fit before the role is confirmed. Statutory rights such as minimum wage, holiday pay and protection from discrimination apply from day one regardless of probation status, but many contracts set a shorter notice period during probation, and in practice new starters do not yet have unfair dismissal protection because two years\' service has not been reached.
Employers can typically extend probation if the contract allows, and either confirm the employee as permanent, extend for further review, or end the employment (subject to notice) if the role is not working out. Passing probation does not create a new contract — it simply removes the probationary notice terms and confirms the existing permanent arrangement continues.
How Fixed-Term Contracts Work
A fixed-term contract has a built-in end point — a specific date, or completion of a defined task or project — after which employment ends automatically without either side needing to give notice, unless the contract specifies otherwise. The Fixed-term Employees (Prevention of Less Favourable Treatment) Regulations 2002 require broadly equal treatment with comparable permanent staff on pay, benefits and access to training, unless the employer can objectively justify a difference.
Reaching four years\' continuous service on one or more fixed-term contracts with the same employer automatically converts the employee to permanent status unless the employer can objectively justify continuing on a fixed-term basis. Non-renewal at the end of a fixed term is legally a dismissal, so employees with two or more years\' service may be able to claim unfair dismissal or statutory redundancy pay if the contract ends for a redundancy-related reason.