A probation period is one of the most useful tools a small UK trade employer has. Done well, it gives you a structured window to assess a new hire, identify any issues early and either confirm them in role or move on cleanly.
Done badly, it gives you a false sense of security and exposes your business to claims.
What Is a Probation Period?
A probation period is a defined period at the start of employment during which both employer and employee assess whether the role is the right fit.
It is not a legal status in itself. There is no statutory right to a probation period under UK law. It exists only where the contract says it does.
Typical Length
Most UK trade businesses use a probation period of three to six months.
Typical structures:
- 3 months for labourers and lower skilled roles
- 6 months for skilled tradespeople and supervisors
- Up to 12 months for managers, with regular review points
The key is to choose a length that gives you genuinely enough time to assess the role and to write it clearly into the contract.
Can You Extend Probation?
Yes, provided the contract allows for it. Many contracts include a clause permitting a one-off extension of up to three months if more time is needed.
Extensions should always be:
- Confirmed in writing
- For a clear reason (such as more time needed to assess performance)
- Accompanied by clear objectives and review dates
Do not extend probation without telling the employee. It can be argued that they were confirmed in role automatically by default.
Notice During Probation
The employment contract should specify the notice period during probation. A common structure is:
- 1 week's notice during probation
- 1 week per complete year of service after probation, up to the statutory minimum
Note: the statutory minimum notice is 1 week after one full month of employment. You cannot give less than the statutory minimum, even during probation.
Unfair Dismissal Rights
This is the part many small employers misunderstand.
In the UK, employees do not gain ordinary unfair dismissal rights until they have two years of service.
That means during probation, and for some time afterwards, you generally have more flexibility to dismiss without going through a full procedure.
However, this flexibility is not unlimited:
- Automatic unfair dismissal protections (such as for whistleblowing, pregnancy, trade union activity or asserting a statutory right) apply from day one
- Discrimination law applies from day one
- Health and safety dismissals attract day one protection
In other words, you cannot dismiss for any reason during probation. You can dismiss for performance or conduct, but not for protected reasons.
How to Use Probation Properly
1. Set Clear Expectations on Day One
Go through the job description, key duties, standards and any specific KPIs in writing.
2. Provide Proper Induction
A structured induction covering:
- Health and safety on site
- Tools and equipment
- Company policies and handbook
- Who reports to whom
- Site rules and expectations
3. Hold Regular Reviews
For a three month probation, hold reviews at one month and two months, with a final review at three months.
Document each review. A simple template covering performance, conduct, training needs and any concerns is enough.
4. Address Issues Early
If there are concerns, raise them as soon as they appear. Document the conversation, explain what good looks like and agree a clear improvement timeframe.
5. Make a Decision
Before the end of probation, decide whether to confirm, extend or end employment. Confirm the decision in writing.
Confirming an Employee in Role
If you decide to confirm the employee, send a short letter confirming:
- Successful completion of probation
- The end of any probation related notice rules
- Any changes to notice period, benefits or pay
Ending Employment During Probation
If you decide to end employment during probation:
- Hold a meeting with the employee
- Explain the reasons clearly
- Give them a chance to respond
- Confirm the decision in writing
- Pay any notice and accrued holiday
Even though they may not have unfair dismissal rights, you should still treat the dismissal with dignity and process. It protects you from discrimination and automatic unfair dismissal claims, and it is the right thing to do.
Common Mistakes
- Letting probation periods quietly lapse without any review
- Failing to document performance concerns
- Assuming you have unlimited freedom to dismiss
- Not paying notice or holiday on exit
- Treating dismissal as instant, with no meeting or letter
- Discriminating on grounds of pregnancy, race, religion or other protected characteristics
A Note on Benefits
Many small businesses tie certain benefits to successful completion of probation, for example:
- Enhanced sick pay
- Pension auto-enrolment opt-out windows (though auto-enrolment itself cannot be delayed beyond three months in most cases)
- Bonus eligibility
- Vehicle and tool allowances
This is entirely lawful, provided it is clear in the contract.
Final Thoughts
Probation is a tool, not a free pass. Used well, it is one of the most useful HR practices for a small UK trade business.
Write it clearly into your contracts. Set expectations on day one. Hold real reviews. Document everything. Make a decision before the end of the period.
If you do all of that, you will hire better, retain better and protect your business if things do not work out.
