Part-time worker rights — equal pay, benefits and protection from unfair treatment

The Part-Time Workers (Prevention of Less Favourable Treatment) Regulations 2000 are frequently breached and rarely enforced — because most part-time workers don't know they have these rights. If you are being treated worse than a comparable full-time colleague without a proper reason, you can bring a claim.

Part-time worker? You have the same rights as full-time colleagues, pro-rata

Know your part-time rights

Do part-time workers have the same rights as full-time workers?

Yes, on a pro-rata basis. The Part-Time Workers (Prevention of Less Favourable Treatment) Regulations 2000 give part-time workers the right not to be treated less favourably than a comparable full-time worker, unless the treatment can be objectively justified.

What counts as less favourable treatment for part-time workers?

Less favourable treatment includes: lower hourly pay, exclusion from bonus schemes, fewer holidays (pro-rata), denial of pension membership, less access to training, and exclusion from career progression opportunities — all without objective justification.

Can I be selected for redundancy because I work part-time?

Selecting someone for redundancy because they work part-time is a form of less favourable treatment under the Part-Time Workers Regulations. It may also constitute indirect sex discrimination (since women are more likely to work part-time), which carries no compensation cap.

Who is a comparable full-time worker?

A comparable full-time worker is someone employed by the same employer, under the same type of contract, engaged in the same or broadly similar work, and based at the same establishment (or a different establishment where common terms and conditions apply).

What is the time limit to claim less favourable treatment as a part-time worker?

3 months less one day from the date of the act complained of. ACAS Early Conciliation must be started before filing at the Employment Tribunal.

Part-Time Worker Rights

Part-time worker rights — equal pay, benefits and protection from unfair treatment

Last updated: April 2026

All entitlements — pay, holiday, pension — on a pro-rata basis

No qualifying period for less favourable treatment claims

Indirect sex discrimination claims have no compensation cap

What equal treatment means for part-time workers

Your hourly rate must be the same as a comparable full-time worker. You cannot be paid a lower rate simply because you work fewer hours. Overtime rates: you should receive the same overtime premium as full-timers, but only once you have exceeded the standard full-time hours — not from your first extra hour.

You are entitled to 5.6 weeks' holiday pro-rated to your hours. So a 3-day-per-week worker is entitled to 16.8 days. You cannot be given fewer holidays per hour worked than full-time colleagues.

Access to any bonus or incentive scheme cannot be denied to part-time workers without objective justification. The amount should be pro-rated to hours worked.

Occupational pension

You cannot be excluded from your employer's pension scheme simply because you work part-time. Auto-enrolment thresholds apply equally, and if a full-timer would be in the scheme at your earnings level you should be too.

Training and promotion

Part-time workers must have equal access to training and career development. Blocking promotion on the grounds that a role "cannot be done part-time" may be indirect sex discrimination if the practice cannot be objectively justified.

Health insurance, childcare vouchers, gym membership, and similar benefits must be available to part-time workers on equal or pro-rata terms.

The link to sex discrimination

Treating part-time workers less favourably often amounts to

indirect sex discrimination

because women are statistically more likely to work part-time (due to caring responsibilities). If a policy disadvantages part-time workers and cannot be objectively justified, it is indirectly discriminatory.

The importance: sex discrimination claims have

. A claim under the Part-Time Workers Regulations on its own is subject to the unfair dismissal cap, but running a discrimination claim alongside significantly increases the potential award and includes injury to feelings.

Requesting a written statement of reasons

If you think you are being treated less favourably, you can ask your employer in writing for a written statement explaining the reasons for the treatment. They must respond within 21 days. An inadequate or evasive response can be used as evidence in tribunal proceedings.

Part-time worker questions answered

How to bring a less favourable treatment claim

If you believe you are being treated less favourably than a comparable full-time worker solely because you work part time, the Part-Time Workers (Prevention of Less Favourable Treatment) Regulations 2000 give you a right to bring a claim in the employment tribunal. The process has several distinct steps.

Identifying your comparator

You need a comparable full-time worker — someone employed by the same employer under the same type of contract, doing the same or broadly similar work. The comparator does not need to be in the same office or team, but they must be doing work of the same or a broadly similar nature. If no actual comparator exists, the regulations allow you to use a hypothetical comparator in some circumstances, though this is harder to establish in practice.

The pro-rata principle

Many entitlements for part-time workers are subject to the pro-rata principle: you are entitled to the proportional equivalent of what a full-time worker receives. For example, if a full-time worker receives 25 days' annual leave and you work three days a week (0.6 FTE), you are entitled to 15 days. Applying a flat-rate benefit to full-time workers but denying it entirely to part-time workers — without objective justification — is likely to breach the Regulations.

Written statement of reasons

Before issuing a tribunal claim, you can ask your employer for a written statement of the reasons for the less favourable treatment within 21 days. If the employer fails to provide one or provides an inadequate response, the tribunal can draw an adverse inference. Requesting this statement is a useful step both for building your case and for putting the employer on notice that you are taking the matter seriously.

Overlap with sex discrimination

Part-time work is predominantly done by women, and treating part-time workers less favourably can also constitute indirect sex discrimination under the Equality Act 2010. Bringing both claims together can be advantageous: Equality Act claims have no cap on compensation, whereas the Regulations themselves do not specify a cap but operate within the general tribunal framework. If sex discrimination is established, the uncapped compensation available under the Equality Act often produces a higher award.

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