This guide is maintained as a current resource for July 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Explore how part‑time work affects unfair dismissal rights in England and Wales. Learn about protections against less favourable treatment, how part‑time status intersects with unfair and automatically unfair dismissal, comparator principles, redundancy considerations, qualifying service and tribunal time limits.
Part‑time work is a common form of employment in England and Wales, offering flexibility for workers and employers alike. Even though part‑time employees work fewer hours than full‑time colleagues, the law affords them significant protections, including in relation to dismissal and unfair treatment. Understanding how part‑time status affects unfair dismissal rights, legal processes and tribunal claims helps part‑time workers and employers navigate workplace rights effectively. This article explains those legal principles, outlines how part‑time workers' rights intersect with unfair dismissal, and provides practical guidance on what to consider if a dismissal has occurred.
Defining Part‑Time Work
There is no specific statutory number of hours that defines part‑time work. A part‑time worker or employee is generally someone who works fewer hours than a comparable full‑time employee doing similar work for the same employer. The key comparator helps determine whether terms and treatment are less favourable because of part‑time status.
Legal Protections for Part‑Time Workers
Right Not to Be Treated Less Favourably
Under the Part‑time Workers (Prevention of Less Favourable Treatment) Regulations 2000, part‑time workers and employees must not be treated less favourably than comparable full‑time workers solely because they are part‑time, unless there is an objectively justifiable reason for the different treatment. This right applies from the first day of employment and encompasses terms and conditions such as pay, benefits, holiday entitlement, training, development and redundancy selection.
“Less favourable treatment” can include:
- Pay and benefits that are not pro‑rata (proportional to hours worked).
- Exclusion from redundancy or dismissal considerations where full‑time employees are not.
- Disadvantage in training, career progression or development opportunities.
- Procedural detriments linked to part‑time status.
Part‑Time Work and Unfair Dismissal
Unfair Dismissal Generally
A worker can challenge a dismissal if they are legally an employee, and they have the required qualifying service (currently generally two years' continuous employment, with proposed reforms reducing this to six months). If the dismissal occurs without a fair reason, or the employer did not follow a fair procedure, it may be unfair dismissal under the Employment Rights Act 1996.
Interaction With Part‑Time Status
Part‑time status itself should not be the reason for dismissal. Dismissing someone simply because they work part‑time - or because they enforce their rights as a part‑time employee - is prohibited. If a dismissal is motivated principally by part‑time status or by complaints/enforcement of part‑time rights, it can be treated as automatically unfair dismissal where statutory conditions apply.
For example, a part‑time employee who raises a complaint about unequal treatment compared with full‑time colleagues must not be dismissed because of that complaint. If the employer dismisses them for enforcing rights under the Part‑time Workers Regulations, the dismissal can be automatically unfair, and the employee may not need the usual qualifying service to bring the claim.
Protection Against Victimisation
The Regulations also protect part‑time employees from victimisation - being treated worse because they asserted part‑time worker rights or supported another part‑time worker's enforcement. Victimisation can include dismissal or any detriment linked to raising such issues. If the reason (or main reason) for dismissal is linked to asserting rights under the Regulations, the dismissal may be considered unfair.
Comparators and Redundancy
Choosing a Comparator
To assess less favourable treatment, you usually need to identify a comparator - a full‑time worker employed by the same employer, in the same or similar role, and under materially similar conditions. A tribunal looks at whether terms and treatment differ because of part‑time status and whether any difference is objectively justified.
Redundancy and Dismissal
Part‑time employees must not be disadvantaged in redundancy or dismissal decisions simply because of their hours. Tribunal case law and guidance emphasise that selection criteria for redundancies should be fair and applied consistently across part‑time and full‑time staff. Unjust selection or dismissal practices that disproportionately impact part‑time employees can give rise to both unfair dismissal and less favourable treatment claims. Employers must incorporate objective criteria such as skills, qualifications and attendance, not assumptions about part‑time status.
Unfair Dismissal Claims: Service and Time Limits
Qualifying Service
To bring an ordinary unfair dismissal claim to an employment tribunal, an employee generally needs the legal status of “employee” and usually two years' continuous service with the employer. This threshold is set to reduce under proposed law reforms to six months' service for most unfair dismissal rights, which is expected to come into effect in 2026‑2027.
However, an unfair dismissal claim based on automatically unfair reasons - such as being dismissed for asserting part‑time worker rights - generally has no minimum service requirement. This ensures part‑time employees are protected from dismissal for raising statutory rights from the start of their employment.
Strict Time Limits
Claims must usually be presented to an employment tribunal within three months minus one day of the dismissal. Additionally, most claims require initial notification to Acas and Early Conciliation before a tribunal application. Missing this deadline typically results in the case being rejected, emphasising the importance of acting promptly after dismissal.
Examples
- A part‑time worker is dismissed shortly after complaining they were denied pro‑rata holiday pay compared with full‑time colleagues. If the employer dismisses them because of the complaint, this could be both automatically unfair and a less favourable treatment claim.
- In a redundancy round, part‑time workers are excluded from consultation or selection criteria, while full‑time workers are treated fairly. Such differences might form the basis of unfair dismissal and part‑time less favourable treatment claims.
Practical Steps for Part‑Time Employees
1. Check Employment Status
Confirm whether you are legally an employee or a worker, as this affects the types of claims you can bring. Only employees typically bring unfair dismissal claims, while both employees and workers may bring less favourable treatment claims under the Part‑time Workers Regulations.
2. Compare Terms and Treatment
Identify a suitable comparator (full‑time employee in a similar role) to assess whether you have been treated less favourably due to your part‑time status.
3. Document Evidence
Keep all relevant documentation - contracts, pay records, correspondence, performance reviews and notes from meetings - to support any claim.
4. Seek Early Advice
Contact Acas, Citizens Advice or an employment law specialist to understand possible remedies and to initiate Early Conciliation before submitting an employment tribunal claim.
Key Takeaways
Part‑time employees in England and Wales are afforded significant protections in dismissal contexts. The Part‑time Workers (Prevention of Less Favourable Treatment) Regulations 2000 ensure that part‑time employees are not treated less favourably than comparable full‑time workers - including in dismissal, redundancy and progression opportunities. Part‑time status should not be the reason for dismissal, and dismissals linked to asserting part‑time rights can be automatically unfair without a qualifying period. Understanding these protections, how comparators are selected, and strict time limits for tribunal claims helps part‑time workers recognise and respond to potentially unfair or discriminatory dismissals.
