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Employment5 min read

Working Time Regulations UK: Maximum Hours, Rest Breaks, and Your Rights

The Working Time Regulations 1998 give UK workers the right to rest breaks, daily rest, weekly rest, and limits on working hours. This guide explains the rules and what to do if your employer breaks them.

fairead Team2 March 2026

Most workers in the UK have the right to limit their working week, take rest breaks, and have time off each day and each week. These rights come from the Working Time Regulations 1998 (WTR) — the UK implementation of the EU Working Time Directive, retained in UK law post-Brexit.

Knowing your rights here matters: violations are common, and long working hours are directly linked to health risks.


The 48-Hour Weekly Limit

Regulation 4 of the WTR sets a limit of an average of 48 hours per week — averaged over a reference period of 17 weeks (which can be extended to up to 52 weeks by a workforce or collective agreement).

The average includes overtime — so if you regularly work 50+ hours per week, your employer may be in breach of the Regulations.

Opting Out

Workers (not just employees) can voluntarily opt out of the 48-hour limit by signing a written opt-out agreement. Key points:

  • The opt-out must be voluntary and in writing — you cannot be forced or pressured into signing
  • You can withdraw from an opt-out at any time, with a minimum notice period of 7 days (or longer if agreed, up to 3 months)
  • Refusing to opt out is not lawful grounds for dismissal or detriment

If your employer pressures you to opt out or penalises you for refusing, that is unlawful.


Daily Rest

Regulation 10 gives adult workers the right to at least 11 consecutive hours' rest in every 24-hour period.


Weekly Rest

Regulation 11 gives adult workers the right to at least one day off per week (averaged over two weeks — so you cannot work more than 14 consecutive days without a day off). For workers under 18, the requirement is more generous: two days off per week.


Rest Breaks During Work

Regulation 12 gives workers who work more than 6 hours in a day the right to a rest break of at least 20 minutes. The break must be:

  • Away from the workstation (you cannot be required to eat at your desk during your break)
  • Taken during the working day, not at the start or end

Young workers (under 18) who work more than 4.5 hours have the right to a 30-minute rest break.


Night Workers

If you work at least 3 hours of your normal working time during the night period (generally 11pm–6am), you are a night worker under the Regulations and have additional protections:

  • Your normal working hours must not average more than 8 hours per day in any 24-hour period (over 17 weeks)
  • For work involving special hazards or heavy physical/mental strain, the absolute maximum is 8 hours — with no averaging
  • You have the right to free health assessments before you start night work and periodically thereafter
  • If a health assessment reveals that night work is damaging your health, your employer must transfer you to day work where possible

Annual Leave

The WTR also provides the statutory right to 5.6 weeks (28 days) of paid annual leave per year for full-time workers. Part-time workers receive a pro-rated amount based on their working days. We cover this in detail in our Holiday Entitlement Calculator guide.


Who Is Covered?

The WTR covers workers — a broader category than employees. This includes:

  • Employees
  • Agency workers
  • Casual and zero-hours workers
  • Many freelancers who work personally for one client

Genuinely self-employed people (who set their own work and take financial risk) are generally not covered.

Certain sectors have sector-specific rules that modify the standard WTR provisions, including aviation, seafarers, road transport workers, and junior doctors.


What Can You Do If Your Rights Are Breached?

Rest Breaks and Annual Leave

Disputes about rest breaks, daily/weekly rest, or annual leave can be brought in the Employment Tribunal. The time limit is 3 months minus 1 day from the breach.

48-Hour Limit

If you have not opted out and your employer is requiring you to work more than 48 hours per week on average, you can complain to the Health and Safety Executive (HSE) or your local authority. You can also bring an employment tribunal claim.

Whistleblowing Protection

If you raise concerns about working time violations and are penalised for doing so, you may have a whistleblowing detriment claim — with no minimum service period required.


Opting Out: What You Need to Know

The opt-out agreement must:

  • Be in writing
  • Be specific — a general clause in a contract of employment may not be sufficient
  • Not be a condition of employment or tied to your pay

If you signed an opt-out under pressure or as a condition of the job offer, that opt-out may not be valid. Seek advice.


Key Takeaways

  • The maximum working week is 48 hours on average (over 17 weeks) — including overtime
  • Workers can voluntarily opt out in writing, but cannot be forced to
  • You are entitled to 11 hours' daily rest and one day off per week
  • You have a right to a 20-minute rest break if you work more than 6 hours in a day
  • Night workers have a stricter 8-hour average daily limit and the right to free health assessments
  • Breaches can be raised with the HSE or at the Employment Tribunal (3-month time limit)

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