If you’ve just been dismissed from your job and something about it didn’t feel right, you’re probably weighing up a decision right now: do you let it go, or do you actually do something about it? An unfair dismissal claim UK employees bring to an employment tribunal can result in real compensation, but the process is time-limited, procedural, and easy to get wrong if you’re doing it without guidance. This guide walks through exactly how the process works, from eligibility to time limits to what compensation typically looks like, so you can decide your next move with a clear head.
What Counts as Unfair Dismissal?
Unfair dismissal isn’t just about feeling hard done by. Legally, it means your employer ended your employment without a fair reason, or without following a fair process, or both. Fair reasons for dismissal generally fall into categories like conduct, capability, redundancy, illegality, or “some other substantial reason.” If your employer can’t point to one of these, or if they had a valid reason but handled the process badly, such as skipping a proper investigation or denying you the chance to respond, the dismissal may well be unfair.
There’s also a separate category called automatic unfair dismissal, which covers situations like being dismissed for whistleblowing, pregnancy, or asserting a statutory right. These claims don’t require you to have worked for your employer for any minimum length of time, unlike standard unfair dismissal claims.
Do You Qualify to Bring a Claim?
For most standard unfair dismissal claims, you currently need at least two years of continuous service with your employer before you’re protected. This is a significant hurdle for anyone dismissed early in a job, and it’s worth checking your exact start and end dates carefully, since even a few weeks can make the difference.
That said, this qualifying period is set to change. From 1 January 2027, the qualifying period is due to drop from two years to just six months, under reforms already legislated for but not yet in force. If you were dismissed before that date and don’t meet the current two-year threshold, you likely won’t be able to bring a standard unfair dismissal claim, though it’s always worth checking whether your situation falls under one of the automatic or discrimination-related categories that don’t require any qualifying period at all.
The Time Limit: Don’t Let This Slip
This is the single most important practical detail in this entire guide. You currently have three months minus one day from your effective date of termination to start the process. Miss it, and in most cases you lose your right to claim altogether, regardless of how strong your case is.
A wider reform is expected to extend this to six months, but as things stand this hasn’t yet taken effect, so anyone dismissed now should work to the current three-month deadline rather than assume the longer period applies. Don’t wait to see how an internal appeal plays out before acting. The tribunal clock keeps running during any internal appeal process, and relying on “reasonable practicability” arguments to excuse a late claim is a difficult, unreliable fallback.
How ACAS Early Conciliation Affects Your Deadline
Before you can lodge an employment tribunal claim, you’re required to notify ACAS and go through ACAS early conciliation. This is a free service designed to help you and your employer settle the dispute without a tribunal hearing. Once you notify ACAS, your time limit is effectively paused while conciliation is ongoing, and it resumes once conciliation ends. If early conciliation doesn’t resolve things, or you choose not to pursue it further, ACAS issues you a certificate, and from that point you’ll have at least one month left to submit your claim to the tribunal.
The key takeaway is to contact ACAS as early as possible, well before your three-month deadline is close to expiring. Leaving it until the last few days is one of the most common reasons genuine claims get thrown out on a technicality.
How the Employment Tribunal Claim Process Works
Once early conciliation has concluded, an employment tribunal claim is started by submitting an ET1 form, setting out the details of your dismissal and what you’re claiming. Your employer then has the opportunity to respond with an ET3 form, setting out their defence. From there, the case may proceed through case management, a preliminary hearing, and potentially a full hearing where evidence is heard and a judgment is made, unless the case settles beforehand, which a significant proportion do.
You’re not required to have a solicitor to bring a claim, and plenty of people represent themselves. But the process involves strict procedural rules, evidence gathering, and legal argument that can be genuinely difficult to navigate alone, particularly if your employer is legally represented. Many employment solicitors offer an initial consultation, and some work on a no-win, no-fee basis for cases they consider strong.
What Dismissal Compensation Could You Receive?
If your unfair dismissal claim succeeds, compensation is usually made up of two parts.
The Basic Award
This is calculated using a formula based on your age, length of service, and weekly pay, similar to how statutory redundancy pay is calculated. It’s currently capped, with a maximum figure that’s reviewed and adjusted periodically.
The Compensatory Award
This covers your actual financial losses, such as lost earnings and lost benefits, resulting from the dismissal. It’s also subject to a statutory cap, currently set at the lower of a fixed maximum figure or 52 weeks’ worth of your gross pay. Importantly, there’s no cap at all for dismissals linked to whistleblowing or certain types of discrimination, which can make those cases significantly more valuable in compensation terms.
The actual amount you’d receive depends heavily on the specifics of your case, including how quickly you found new work, what you were earning, and how the tribunal assesses your individual losses. This is exactly the kind of calculation where speaking to an employment solicitor early on can give you a realistic sense of what your claim might actually be worth before you commit time and effort to pursuing it.
Frequently Asked Questions
How long do I have to make an unfair dismissal claim?
You currently have three months minus one day from your last day of employment to notify ACAS and begin the process. This deadline is expected to extend to six months under future reforms, but until that change formally takes effect, the three-month limit applies.
Do I need two years of service to claim unfair dismissal?
For most standard unfair dismissal claims, yes, you currently need at least two years of continuous employment. This is due to fall to six months from 1 January 2027. Certain categories, such as automatic unfair dismissal linked to whistleblowing or asserting a statutory right, don’t require any minimum service at all.
What is ACAS early conciliation and is it compulsory?
ACAS early conciliation is a mandatory step before almost all employment tribunal claims. You must notify ACAS before submitting a claim, and the process gives both sides a chance to settle without going to a tribunal hearing. It also pauses your time limit while it’s ongoing.
How much compensation could I get for unfair dismissal?
Compensation typically combines a basic award, calculated from your age, service, and pay, with a compensatory award covering your actual financial losses. Both are subject to statutory caps in most cases, though caps don’t apply to whistleblowing or discrimination-related dismissals. The exact figure depends entirely on your individual circumstances.
Deciding whether to bring an unfair dismissal claim is rarely straightforward, but the clock doesn’t wait for you to make up your mind. If you think you’ve been unfairly dismissed, the smartest first step is to check your dates against the current time limit, contact ACAS to start early conciliation, and get advice on the strength of your case before that window closes.