Probationary periods are a widely used tool for assessing new employees, but they are frequently misunderstood by employers. The critical point to grasp is that probation is a contractual arrangement, not a legal status. An employee on probation has the same statutory employment rights as any other employee from their first day.
Typical Lengths
- 3 months — common for straightforward roles
- 6 months — the most widely used period across industries
- 12 months — occasionally used for senior or complex roles
There is no statutory cap, but excessively long probation periods can be difficult to justify and may affect employee morale and engagement.
What Probation Does and Doesn't Do
What It Does
- Sets a defined assessment period with clear objectives
- Allows for shorter contractual notice periods during probation (e.g., one week instead of one month)
- Provides a framework for structured feedback and performance reviews
- Signals to the employee that their performance will be formally assessed before being confirmed in post
What It Doesn't Do
- Remove statutory rights — employees gain day-one rights including protection from discrimination, right to a written statement, and the right to request flexible working
- Allow you to dismiss without any process — even during probation, a fair procedure should be followed
- Override unfair dismissal protection (currently after two years, but the Employment Rights Bill will extend this to day one with a statutory probation period of up to nine months)
Extending Probation
Probation can be extended if the contract allows for it. The extension should be:
- Communicated in writing with clear reasons
- Accompanied by specific objectives and a review date
- Reasonable in length — typically matching the original probation period
Ending Employment During Probation
If you need to dismiss an employee during probation, apply the contractual notice period and follow a fair process — meet with the employee, explain your concerns, and give them an opportunity to respond. While a full formal disciplinary process may not be required during the early weeks, fairness and documentation matter.
Need help setting up or managing probationary periods? Our performance management service includes structured probation frameworks. Get in touch.