The two-year qualifying period applies to ordinary unfair dismissal only. There are categories of dismissal that are automatically unfair regardless of how long you have worked for the employer. From day one. Check every category below before you accept that you have no claim.
The Two-Year Rule -- And What It Does Not Cover
The Employment Rights Act 1996 requires most employees to have two years of continuous service before they can bring an ordinary unfair dismissal claim. If you have been dismissed before reaching that threshold, you cannot use the ordinary unfair dismissal route. That much is correct.
But ordinary unfair dismissal is only one type of claim. There is a separate category called automatically unfair dismissal. For these claims there is no qualifying period at all. You could have started the job yesterday. You still have rights. The list of automatically unfair reasons is extensive and covers situations that are far more common than most people realise.
Five Automatically Unfair Reasons That Apply From Day One
1. You Were Dismissed Because of Pregnancy or Maternity
Dismissal connected to pregnancy, maternity leave, or the fact that you have recently returned from maternity leave is automatically unfair with no qualifying period. This applies whether you were dismissed during pregnancy, during maternity leave, or within a protected period after returning. It also applies to dismissal connected to adoption leave, shared parental leave, and paternity leave. If the timing of your dismissal coincides with a pregnancy announcement, a maternity leave request, or a return from leave, the connection is the key question. You do not need to prove that was definitely the reason -- you need to raise it as a possibility and the employer must then explain the real reason.
2. You Were Dismissed for Whistleblowing
If you raised a concern about wrongdoing at work -- a health and safety risk, a legal breach, financial misconduct, environmental damage, a miscarriage of justice, or concealment of any of these -- and you are then dismissed, that is a protected disclosure under the Employment Rights Act 1996. Dismissal for making a protected disclosure is automatically unfair. There is no qualifying period and the compensation is uncapped. The disclosure must have been made in the reasonable belief that it was in the public interest. From 6 April 2026, disclosures about sexual harassment at work also qualify as protected disclosures under ERA 2025.
3. You Were Dismissed for Asserting a Statutory Right
If you asserted a legal right -- asked for your payslip, queried an unlawful deduction from wages, requested rest breaks you were legally entitled to, or asserted any other statutory employment right -- and you were then dismissed, that dismissal is automatically unfair. Day one right. No qualifying period. The key is that the assertion of the right was connected to the dismissal. You do not need to have been right about the right in order to be protected -- you need only to have reasonably believed you had the right and to have asserted it in good faith.
4. You Were Dismissed Because of a Protected Characteristic
If the real reason for your dismissal was your age, sex, race, disability, religion or belief, sexual orientation, gender reassignment, marriage or civil partnership, or pregnancy and maternity -- all protected characteristics under the Equality Act 2010 -- you have a discrimination claim as well as an automatically unfair dismissal claim. Both are available from day one. Discrimination claims are uncapped. This is the most important category for short-service employees to check. Consider the reason you were given for the dismissal and whether the real reason might have been connected to a characteristic you hold.
5. You Were Dismissed for Health and Safety Reasons
If you raised a health and safety concern, refused to work in conditions you reasonably believed were dangerous, or left the workplace because you believed there was a serious and imminent danger, and you were then dismissed, that dismissal is automatically unfair with no qualifying period. This category is particularly relevant for workers in physical environments, construction, manufacturing, and care settings. It also applies to employees who are designated health and safety representatives.
Other Automatically Unfair Reasons to Check
The full list is longer than these five. Also check: dismissal for trade union membership or activities, dismissal for taking part in protected industrial action, dismissal for exercising rights under the Working Time Regulations (rest breaks, maximum working week), dismissal connected to jury service, and dismissal for requesting flexible working. Each of these is automatically unfair from day one of employment.
What Changes in January 2027
The Employment Rights Act 2025 reduces the qualifying period for ordinary unfair dismissal from two years to six months, effective 1 January 2027. If you are dismissed on or after that date and have at least six months of continuous service, you will be able to bring an ordinary unfair dismissal claim. The compensation cap for unfair dismissal is also being removed at the same time. If you are currently in the first two years of a job and have not yet been dismissed, document everything carefully. The landscape changes significantly on 1 January 2027.
Your Time Limit Applies Regardless
Whether you are bringing an automatically unfair dismissal claim or a discrimination claim, you have three months less one day from your dismissal date to contact ACAS and start early conciliation. This clock is running from the day you were dismissed. Contact ACAS at acas.org.uk immediately. The ACAS early conciliation period pauses your time limit. Do not wait.