Why probation periods matter more under the new dismissal rules
Advice from an HR consultant in Milton Keynes on why probation periods matter more than ever under the new 6-month unfair dismissal rules from January 2027.
From 1 January 2027, the rules around unfair dismissal are changing.
The qualifying period that currently gives you two years to assess a new employee is being cut to just six months.
If you run a small business, that shift has real consequences for how you bring people on board.
Many business owners are asking whether probation periods even have a purpose any more. They do. In fact, they've never been more important.
Let me walk you through what's happening and what you need to do about it.
The law is changing and the financial stakes are rising
Right now, an employee needs two years of continuous service before they can bring an unfair dismissal claim. That's given employers a generous amount of breathing room.
From January 2027, that drops to six months. And there's more. The statutory cap on compensation for unfair dismissal is being removed altogether. So if you get a dismissal wrong after that six-month point, the financial exposure could be far greater than anything you've faced before.
It's also worth remembering that some claims already apply from day one. Discrimination and whistleblowing protections don't require any qualifying period. Those haven't changed.
Why probation hasn't lost its purpose
I understand the logic behind the question. If someone gains full protection after six months, and most probation periods run for about that same length, what's the point?
The point is that probation gives you a structured framework to evaluate someone early on. Under the current two-year qualifying period, many employers have been able to manage things informally. A quiet chat here, a delayed review there. It didn't always matter because the legal risk was low.
That cushion disappears in 2027. Your probation period becomes the only window where you can properly assess performance, raise concerns, and make a decision about someone's future in the role before they gain full unfair dismissal rights.
Without a proper process in place, you could easily reach the six-month mark without having addressed any issues. At that point, removing someone from the business requires a fair reason and a documented procedure. The burden of proof shifts significantly.
What your probation process actually needs to include
Having a probation clause sitting in your contract of employment isn't enough on its own. The clause needs a real process behind it. Otherwise it's just words on paper.
Here's what I'd recommend building into your approach:
🟢Set clear expectations from day one. That means a proper job description, short-term objectives, and a training plan so the employee knows exactly what's expected of them.
🟢Hold regular review meetings throughout the probation period. Don't leave everything to a single conversation at the end.
🟢 When concerns come up, give honest and specific feedback. Put it in writing.
🟢Allow the employee a genuine chance to improve before you make any final decision.
🟢Confirm the outcome formally in writing, whether that's passing probation, extending it, or ending the employment.
Each of those steps builds a paper trail. If a decision is ever questioned or challenged, that documentation is what protects your business.
A shorter probation period could work in your favour
You might assume that a longer probation gives you more time to make a decision. But consider the opposite.
Reducing your standard probation to three months rather than six forces action earlier.
Managers can't keep putting off awkward conversations. Issues get identified sooner. And you still have time to act well before the six-month qualifying period arrives.
If you build in the option to extend probation by a month for borderline cases, you've got flexibility without running up against the deadline. The key is making sure that any decision about whether someone stays or goes happens comfortably before month six. Waiting until the last moment is where businesses get caught out.
As part of our HR consultancy services in Milton Keynes, I regularly help business owners rethink the length and structure of their probation periods to align with these upcoming changes.
Your managers need to be ready for this
One thing I see time and again is that probation problems don't actually originate with the new employee. They originate with the manager responsible for overseeing them.
A manager who avoids a difficult conversation, or who assumes a performance issue will resolve itself, can undo even the best-written probation policy. If the people running your reviews and making decisions about who stays haven't been trained on the new rules, your business is exposed.
Manager training on how to conduct effective probation reviews and how to document concerns properly is one of the most overlooked parts of this whole process. It's also one of the most important.
Questions worth asking yourself now
Before the new rules come into effect, it's worth taking an honest look at where you stand:
➡️ Do your managers know how to run a structured probation review, or do they tend to leave it until the last minute?
➡️ Is your current probation clause backed up by a documented process that would hold up if challenged?
➡️ Are you confident that performance concerns are being raised and recorded in writing during the first few months of employment?
➡️Could you shorten your probation period and still make informed decisions about new starters?
If you're unsure about any of those, now is the time to address it.
How I can help to get this right
I know this can feel like a lot to get your head around, especially when you're busy running your business.
That's exactly why I'm here.
I can look at your current probation process, tighten up your documentation, and work with your managers so they feel confident handling those early months properly.
As an outsourced HR consultant in Milton Keynes, I work with small and medium-sized businesses to make sure their HR processes are solid, compliant, and practical.
The new rules don't take effect until January 2027, but getting your probation process right takes time. Don't leave it until the last minute.
Get in touch and let's have a conversation about what your business needs. I'll help you build something that works. 📱 0781 3084152 or email 📧 daxa@hrresultsltd.co.uk Taking your HR from 'to do' to 'done'.
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