NHS Working Time Rules: Breaks, Rest and the 48-Hour Limit

Twelve-hour shifts, back-to-back nights and extra bank shifts are part of NHS life for many staff. The Working Time Regulations 1998 set legal limits to protect your health and safety, and NHS terms and conditions add to them. Knowing the basics helps you spot when a rota is not right.

The 48-hour average limit

You cannot be required to work more than 48 hours a week on average, usually measured over 17 weeks. This includes:

• your contracted hours
• overtime
• bank shifts with the same employer
• in practice, work for other employers too, because the limit applies to all your work

You can choose to opt out of the 48-hour limit by signing an agreement with your employer. It must be voluntary, in writing, and you can cancel it by giving notice, normally up to three months depending on the agreement. You cannot be treated badly for refusing to opt out.

Daily rest: 11 hours between shifts

You are entitled to 11 consecutive hours of rest in each 24-hour period. That is why a late shift finishing at 9pm should not be followed by an early shift starting at 7am the next morning.

There are exceptions for some health service work where continuity of care is needed, but in those cases you should receive equivalent compensatory rest.

Weekly rest

You are entitled to an uninterrupted rest period of either 24 hours each week or 48 hours each fortnight.

Breaks during a shift

If you work more than six hours in a day, you are entitled to a rest break of at least 20 minutes away from your workstation. NHS employers usually provide longer breaks on long shifts, and whether breaks are paid or unpaid depends on your contract and local policy. On a 12.5-hour shift with a 30 or 60-minute unpaid break, your paid hours are lower than the shift length.

Night work limits

Night workers should not work more than an average of eight hours in any 24-hour period, usually averaged over 17 weeks. Night workers are also entitled to a free health assessment before starting night work and at regular intervals.

Young workers

Workers under 18 have stricter rules, including shorter working days, no night work in most cases and longer breaks.

How this links to your pay

The working time rules do not change your pay rates, but they affect how much extra work you can take on. Before you pick up bank shifts on top of a full-time rota, check:

• your average weekly hours over the reference period
• your rest between shifts
• whether you have signed an opt-out

Extra hours are paid at time and a half if they are overtime on Bands 1 to 7. The shift pay calculator shows what a shift is worth, including unsocial hours.

Resident doctors

Resident doctors in England have additional rules on rota design and safe working hours in their own contract, including limits on consecutive shifts and long days, monitored through exception reporting. Our resident doctor pay guide explains their pay.

If your rota breaks the rules

1. Raise it with your manager or rota coordinator, with specific examples.
2. Check your trust's working time policy.
3. Contact your union representative if it is not resolved.
4. Fatigue is a patient safety issue, and many trusts have specific guidance on safe rostering.

Common questions

Do bank shifts count towards my 48 hours? Yes. All your working time counts.

Is travel time between sites working time? Travel between workplaces during the working day usually is. Your normal commute is not.

Can my employer make me opt out? No. Opting out must be your choice.

An example: checking your average hours

Imagine a full-time nurse contracted for 37.5 hours a week, working three 12.5-hour shifts. In one busy week they also pick up two 12.5-hour bank shifts:

• contracted hours: 37.5
• bank hours: 25
• total that week: 62.5 hours

That week alone is over 48 hours, but the limit is an average, usually over 17 weeks. If most weeks are 37.5 hours, the average stays under 48. If extra shifts become a regular pattern, the average can go over, and the employer should stop offering them unless you have signed an opt-out. Rest rules still apply in every week, opt-out or not.

See what a shift pays

Use the shift pay calculator to work out any shift.