Adult workers in the UK are entitled to 11 consecutive hours of rest in each 24-hour period, so a shift finishing at 8pm cannot normally be followed by one starting before 7am. Workers under 18 get 12 consecutive hours. Both come from the Working Time Regulations 1998, and neither can be signed away by the worker – unlike the 48-hour working week, there is no individual opt-out from rest. What does exist is a set of exceptions covering unmeasured work, continuity-of-service industries, shift changes and several excluded sectors, and in most of those cases the employer owes compensatory rest instead.
The 11-hour figure is well known. What causes trouble in practice is everything around it: which workers it does not apply to, what an employer owes when it is displaced, and the much stricter regime for anyone under 18. This guide covers all three, and flags what is changing.
How many hours between shifts is legal in the UK?
Eleven consecutive hours for an adult worker, under regulation 10(1) of the Working Time Regulations 1998. The wording matters: the entitlement is to “a rest period of not less than eleven consecutive hours in each 24-hour period during which he works for his employer”.
That phrasing means the 11 hours must sit inside each rolling 24-hour period in which the worker works, not merely between two shifts you happen to compare. In a settled pattern the practical effect is the familiar one – finish at 8pm, do not start before 7am – but where a rota moves around, the test is whether each 24-hour period contains an unbroken 11-hour block.
Two further points are commonly missed. The rest must be consecutive, so two blocks of five and a half hours do not satisfy it. And an on-call period spent at the workplace, or downtime during which the worker must remain available, is generally not rest.
The full adult rest picture
Daily rest is one of three separate entitlements, and they stack.
Entitlement
What it is
Regulation
Daily rest
11 consecutive hours in each 24-hour period
10(1)
Weekly rest
24 uninterrupted hours in each 7-day period, or – at the employer’s choice – 48 uninterrupted hours per fortnight, or two separate 24-hour periods per fortnight
11(1) and 11(2)
Rest breaks
An uninterrupted 20 minutes where the working day exceeds 6 hours, taken away from the workstation
12(1) and 12(3)
Three details worth knowing about the weekly entitlement. The switch to a fortnightly pattern is the employer’s unilateral decision – regulation 11(2) says “if his employer so determines”, so no worker or collective agreement is needed. The default week starts at midnight between Sunday and Monday unless an agreement says otherwise. And under regulation 11(7) the weekly rest period does not include the daily rest period, so the real default is 24 plus 11, meaning 35 hours – though that add-on can be defeated by objective, technical or organisational reasons.
There is also a separate and often forgotten duty in regulation 8: where a work pattern puts health and safety at risk, particularly because the work is monotonous or the work rate is predetermined, the employer must ensure adequate rest breaks. Regulation 8 survives most of the exceptions below.
GOV.UK glosses the overall effect as workers being entitled to rest totalling around 90 hours a week on average, excluding in-work breaks. That is a useful sense-check on a rota, but it is a description of the aggregate rather than a free-standing entitlement to argue from.
Can a worker agree to less than 11 hours?
No. This is the single most useful thing to understand about the regime, and it is where employers most often go wrong.
The 48-hour average working week can be opted out of individually: regulation 4(1) applies “unless his employer has first obtained the worker’s agreement in writing”, and regulation 5 lets that agreement run indefinitely, terminable by the worker on at least seven days’ notice. Regulations 10, 11 and 12 contain no equivalent wording. There is no individual opt-out from daily rest, weekly rest or rest breaks.
Regulation 35(1) then makes any attempt void: a provision in any agreement, contract of employment included, is void so far as it purports to exclude or limit the Regulations. So a clause in a contract saying the worker accepts nine hours between shifts is worth nothing.
The one route that does exist is collective. Under regulation 23(a), a collective agreement or a workforce agreement can modify or exclude daily rest, weekly rest and rest breaks – but a workforce agreement has to satisfy the conditions in Schedule 1 on representatives and ballots, so an individual contract term cannot be dressed up as one. And crucially, going down that route triggers the compensatory rest duty. Even a collective agreement cannot extinguish rest; it can only move it.
Put plainly: a worker can sign away the 48-hour week, and nothing else.
The exceptions: when the 11 hours does not apply
There are four routes by which daily rest can be displaced, plus a set of sectors outside the Regulations altogether. The distinction that matters is whether compensatory rest is owed, and it is not owed in every case.
Unmeasured working time (regulation 20)
Daily rest, weekly rest, rest breaks, the 48-hour limit and the night work limits all fall away where, because of the specific characteristics of the activity, the duration of the worker’s working time is not measured or predetermined, or can be determined by the worker themselves. The Regulations give three illustrations: managing executives or others with autonomous decision-taking powers, family workers, and workers officiating at religious ceremonies.
This is the harshest of the exceptions, because regulation 24 compensatory rest does not apply to it. A genuinely unmeasured worker loses the rest entitlements outright with no substitute. It is also narrower than employers assume – it is not a senior-staff exemption, and a manager whose hours are in fact rostered is not within it. The “partly unmeasured” version that once let voluntary extra hours fall outside the limits was revoked in April 2006, so regulation 20 is now all or nothing.
Special cases (regulation 21)
Daily rest, weekly rest, rest breaks and the night work limits do not apply where:
the worker’s place of work and place of residence are distant from one another, including offshore work, or their different places of work are distant from one another
the worker is engaged in security and surveillance activities requiring a permanent presence to protect property and persons
the worker’s activities involve the need for continuity of service or production – the illustrations include hospitals and similar establishments (expressly including doctors in training), residential institutions and prisons, docks and airports, press and broadcasting, postal and telecommunications, civil protection services, gas, water and electricity, refuse collection, industries where work cannot be interrupted on technical grounds, research and development, agriculture, and the carriage of passengers on regular urban transport
there is a foreseeable surge of activity, as in agriculture, tourism and postal services
the worker’s activities are affected by unusual and unforeseeable circumstances beyond the employer’s control, by exceptional events whose consequences could not have been avoided despite all due care, or by an accident or the imminent risk of one
the worker works in railway transport and their activities are intermittent, spent on board trains, or linked to timetables and the continuity of traffic
The statutory formula is “as may be the case”, which means the listed sectors illustrate the gateway condition rather than granting a self-executing exemption. Being a hospital is not enough on its own – the worker’s activities must genuinely involve the need for continuity of service. Regulation 21 does not remove the 48-hour limit; instead the averaging period for that limit stretches from 17 weeks to 26.
Compensatory rest is owed here.
Shift changes and split shifts (regulation 22)
This one is narrower than its reputation. Daily and weekly rest are disapplied for a shift worker when they change shift and cannot take the rest between the end of one shift and the start of the next. It is a moment-of-changeover provision, not a standing exemption: a shift worker on a settled rota is fully entitled to 11 hours between shifts.
Separately, regulation 22(1)(c) disapplies daily and weekly rest for workers engaged in activities involving periods of work split up over the day, the example given being cleaning staff. That one is a standing disapplication for that pattern of work.
Regulation 22 does not touch rest breaks or the night work limits. Compensatory rest is owed.
Sectors outside the Regulations (regulation 18)
Some workers are excluded from the WTR rest provisions entirely and covered by their own regime instead.
Sector
Position
What applies instead
Merchant seafarers
Wholly outside the WTR
Merchant Shipping (Maritime Labour Convention) (Hours of Work) Regulations 2018 – minimum rest of 10 hours in any 24 hours and 77 hours in any 7 days
Loses daily rest, weekly rest, breaks, the 48-hour limit and night limits; keeps annual leave and night worker health assessments
Road Transport (Working Time) Regulations 2005 for breaks and night work, plus the drivers’ hours rules for daily and weekly rest
Aviation mobile crew
Partial exclusion
Civil Aviation (Working Time) Regulations 2004, plus the flight time limitation rules in the aviation safety framework
Armed forces, police and civil protection
Partial, and conditional – only where characteristics peculiar to the service “inevitably conflict” with the Regulations
GOV.UK treats this as applying to an exceptional catastrophe or disaster
Note that compensatory rest is not triggered by a regulation 18 exclusion. And the “inevitably conflict” test for the forces and police is a high, activity-specific threshold, not a blanket institutional carve-out.
One anomaly worth knowing: regulation 19 removes the 48-hour limit, night work limits and health assessment duties for domestic servants in private households, but it does not list regulations 10, 11 or 12, so on the face of the legislation they keep their daily rest, weekly rest and rest breaks. GOV.UK’s guidance says domestic workers in private households are not entitled to rest breaks, which does not match the regulation as enacted. If this affects you, take advice rather than relying on either source.
Compensatory rest: what you owe instead
Where daily rest, weekly rest or a rest break is displaced by regulation 21, regulation 22, or a collective or workforce agreement under regulation 23(a), and the worker is accordingly required to work through what would have been rest, regulation 24 applies. The employer must “wherever possible” allow an equivalent period of compensatory rest, and only in exceptional cases where that is not possible for objective reasons may they instead afford “such protection as may be appropriate in order to safeguard the worker’s health and safety”.
Two features of the drafting are worth stressing. “Equivalent” governs the length of the rest, not its timing or placement – the compensatory rest need not replicate when or how the original entitlement would have fallen. And “wherever possible” is a strong obligation, not best endeavours: the appropriate-protection fallback is a last resort requiring both an exceptional case and objective impossibility, not something an employer can elect into for convenience or cost.
Note too that the duty is conditional on the worker actually being required to work through the rest. If they get the rest anyway, nothing is owed.
Mobile workers not already excluded by regulation 18 sit under regulation 24A instead, which entitles them to “adequate rest” – regular rest periods long and continuous enough to avoid injury and health damage. That is a materially weaker standard than equivalence.
Young workers: the rules for under-18s
A “young worker” is someone who has reached 15 but not 18 and is over compulsory school age. Below that age they are a child, governed by an entirely separate regime covered further down.
The young worker rules are stricter than the adult rules in every respect, and much harder to derogate from.
Entitlement or limit
Young worker
Adult
Daily rest
12 consecutive hours
11 consecutive hours
Weekly rest
48 hours in each 7-day period
24 hours per week, or 48 per fortnight
Rest break
30 minutes where the day exceeds 4.5 hours
20 minutes where the day exceeds 6 hours
Maximum working time
8 hours a day and 40 hours a week, hard caps
48 hours averaged over 17 weeks
Individual opt-out
None available
Available for the 48-hour limit only
Night work
Prohibited during the restricted period
Permitted, subject to limits
Several points deserve emphasis because they are routinely misunderstood or misapplied.
The 8-hour and 40-hour limits cannot be averaged and cannot be opted out of. The opt-out machinery applies only to the adult 48-hour average. The young worker cap is a hard daily and weekly ceiling, and it aggregates across employers – so a 17-year-old with two part-time jobs is capped at 40 hours in total, and each employer is expected to establish the position.
The 30-minute break cannot be varied by collective agreement. The adult 20-minute break can be reshaped by a collective or workforce agreement. The young worker break cannot.
Weekly rest can be reduced, but only so far. It may be interrupted where work is split over the day or of short duration, and may be reduced where justified by technical or organisational reasons – but never below 36 consecutive hours.
Daily rest can be interrupted where the activities involve work split over the day or of short duration, with no compensatory rest attached to that particular flexibility.
Night work and the restricted period
Employers must ensure no young worker works during the “restricted period”, which is 10pm to 6am, or 11pm to 7am where the worker’s contract provides for them to work after 10pm. This is an absolute prohibition on any work in that window, not merely a limit for those who qualify as night workers.
There are two sector exceptions, and both are conditional rather than free-standing. For work in a hospital or similar establishment, or in connection with cultural, artistic, sporting or advertising activities, the ban can be lifted entirely. For agriculture, retail, postal or newspaper deliveries, catering, a hotel, pub, restaurant or bar, and bakeries, it can be lifted except between midnight and 4am, which stays absolutely prohibited. In both cases the exception applies only where the work is needed to maintain continuity of service or production or to respond to a surge in demand, no adult worker is available, and the work would not adversely affect the young worker’s education or training. Where it applies, the young worker must be supervised by an adult where necessary for their protection, and must be allowed equivalent compensatory rest.
Before assigning a young worker to the restricted period, the employer must give them the opportunity of a free assessment of their health and capacities – a broader test than the adult night worker health assessment – and repeat it at appropriate intervals. That requirement falls away only where the work is of an exceptional nature.
The narrow exceptions for young workers
Two provisions allow more than that, and their limits are precise.
Force majeure (regulation 27). The maximum working time, the night work ban, daily rest and the rest break can all be disapplied where the employer requires the young worker to do work that no adult worker is available to perform, and which arises from unusual and unforeseeable circumstances beyond the employer’s control or from exceptional events whose consequences could not have been avoided, is temporary in nature, and must be performed immediately. All those conditions are cumulative. Where it applies, the employer must allow an equivalent period of compensatory rest within the following three weeks – the only compensatory rest provision in the Regulations with an express deadline.
Note what is absent from that list: the 48-hour weekly rest period. Force majeure cannot displace it.
Continuity and surge (regulation 27A). This reaches only the maximum working time and the night work ban. It cannot be used to cut daily rest, weekly rest or the 30-minute break. And unlike regulation 27, it sets no deadline for compensatory rest.
Risk assessment
Separately from working time, an employer must not employ a young person until it has made or reviewed a risk assessment that takes particular account of their inexperience, lack of awareness of risks and immaturity, along with the layout of the workplace, exposure to physical, biological and chemical agents, the work equipment involved, how processes are organised, and the training provided. Employers with five or more employees must record the significant findings.
There is also a hard prohibition: a young person must not be employed on work beyond their physical or psychological capacity, involving harmful exposure to toxic or carcinogenic agents or radiation, involving accident risks they cannot reasonably be expected to recognise, or where there is a risk to health from extreme cold or heat, noise or vibration. That prohibition can be relaxed for a young person who is no longer a child where the work is necessary for their training, they are supervised by a competent person and risk is reduced as low as reasonably practicable – but it cannot be relaxed at all for a child.
Children under school leaving age
Children are outside the young worker protections and sit under the Children and Young Persons Act 1933 and local authority byelaws instead. The statutory position in England and Wales is that a child may not be employed:
under the age of 14, though byelaws can permit 13-year-olds to do specified light work
on anything other than light work
before the close of school hours on a school day, though a byelaw may permit up to one hour before school
before 7am or after 7pm on any day
for more than two hours on a school day, or more than two hours on a Sunday
for more than 12 hours in any week in which they attend school
for more than five hours a day if under 15, or eight hours if 15 or over, on a non-school day that is not a Sunday
for more than 25 hours a week if under 15, or 35 hours if 15 or over, during school holidays
for more than four hours in any day without a one-hour rest break
at all, unless they have had or can still have at least two consecutive work-free weeks in the year
Most councils also require an employment permit before a school-age child can be employed. That requirement currently comes from byelaws rather than statute, and GOV.UK warns that a child working without one may leave the employer uninsured for accidents involving them. Because so much turns on local byelaws – whether 13-year-olds can work at all, whether the hour before school is allowed, and any additional local conditions – always check with the council’s child employment team rather than assuming. Scotland and Northern Ireland have their own regimes.
What is changing
Two pieces of legislation matter here, and neither has yet changed the rest rules.
The Employment Rights Act 2025 received Royal Assent in December 2025 and is being commenced in stages. The provisions most relevant to shift scheduling – the right to guaranteed hours, the right to reasonable notice of a shift and of its cancellation or change, and the right to payment for cancelled, moved and curtailed shifts – are in force only for the purpose of making regulations. The substantive rights sit in the government’s roadmap for 2027 with no month announced, and the operative detail, including what notice period counts as reasonable and how much a short-notice payment is worth, is left to regulations that do not yet exist. So no one can yet say how many days’ notice of a shift the law will require.
What has already landed: from April 2026 employers must keep records adequate to show compliance with the annual leave entitlements and retain them for six years, and the Fair Work Agency was established. Employment tribunal time limits are due to rise from three months to six from 1 October 2026, though the commencement position for Working Time Regulations claims specifically is worth checking before relying on it.
The Children’s Wellbeing and Schools Act 2026, which received Royal Assent in April 2026, rewrites the child employment regime – moving the evening cut-off from 7pm to 8pm, replacing local byelaws with national regulations, and putting employment permits on a statutory footing. Only the regulation-making powers are in force. The substantive changes await commencement regulations that have not been made, so the rules set out above remain the operative law.
The young worker provisions themselves have not been amended since April 2003.
Enforcement, and what a worker can do
There are two separate tracks, and conflating them is a common error.
Rest entitlements are enforced through the employment tribunal, not by an inspector. A worker can complain that the employer refused to permit them to exercise their right to daily rest, weekly rest, a rest break or compensatory rest. The tribunal can make a declaration and award compensation that is just and equitable, having regard to the employer’s default and any loss the worker sustained. The time limit is currently three months from the date the right should have been permitted, subject to the extension noted above.
Some duties are criminal, enforced by the HSE or the local authority. These include the duty to take reasonable steps to keep young workers within the 8-hour and 40-hour limits, the young worker night work ban, the health assessment duties, adult supervision where the night ban is lifted, and record keeping. Inspectors have improvement and prohibition notice powers, and on conviction the fine is unlimited – older guidance quoting a £5,000 maximum is out of date. Contravening a notice can carry imprisonment.
Breaching the child employment rules is a separate criminal offence carried by the 1933 Act, enforced in practice by the council’s child employment service, with a fine of up to £1,000 and a due diligence defence available to an employer who can prove it took all reasonable care.
A practical checklist for employers
Check each 24-hour period on the rota contains an unbroken 11-hour block, not just the gap between two named shifts.
Do not rely on contractual consent to shorter rest. It is void.
If you are using an exception, identify which one, in writing – and check whether it carries a compensatory rest duty. Regulations 21, 22 and 23(a) do. Regulations 18, 19 and 20 do not.
Where compensatory rest is owed, give rest of the same length at another time, and record when it was given.
Treat under-18s as a separate scheduling problem, not an adjustment to the adult rota: 12 hours daily, 48 weekly, a 30-minute break after four and a half hours, a hard 8-hour day and 40-hour week, and no work at all in the restricted period.
Ask a young worker whether they have another job, because the hours cap aggregates across employers.
Complete the young person risk assessment before employment starts, not after.
For anyone still of school age, contact the local council before they start.
In summary
Eleven consecutive hours between shifts for adults, twelve for under-18s, and no individual opt-out from either. Where an exception applies – unmeasured work, continuity of service, a shift changeover, a collective agreement, or an excluded sector – check which one, because only some of them oblige you to give the rest back at another time. And treat the under-18 regime as its own set of rules, because it is stricter on every measure and far less flexible than the adult one.
Adult workers in the UK are entitled to 11 consecutive hours of rest in each 24-hour period, so a shift finishing at 8pm cannot normally be followed by one starting before 7am. Workers under 18 get 12 consecutive hours. Both come from the Working Time Regulations 1998, and neither can be signed away by the worker – unlike the 48-hour working week, there is no individual opt-out from rest. What does exist is a set of exceptions covering unmeasured work, continuity-of-service industries, shift changes and several excluded sectors, and in most of those cases the employer owes compensatory rest instead.
The 11-hour figure is well known. What causes trouble in practice is everything around it: which workers it does not apply to, what an employer owes when it is displaced, and the much stricter regime for anyone under 18. This guide covers all three, and flags what is changing.
