The Working Time Regulations 1998 (WTR) set maximum weekly working hours, rest break requirements, and holiday entitlements for UK workers — and a 2019 EU court ruling means employers must now maintain a system to record daily working time for every worker.
UK employers cannot rely on trust or ad-hoc timesheets alone. A functioning, objective, and reliable attendance recording system is now a practical legal requirement. This article explains what the WTR requires, how the 2019 ruling changed the picture, and what employers need to do to stay compliant.
Key Takeaways
- The Working Time Regulations 1998 cap average weekly working hours at 48 and mandate rest breaks
- A 2019 CJEU ruling (Case C-55/18) established that EU-derived law requires a system for objectively and reliably recording daily working time
- UK employers must maintain accurate records of hours worked — not just holiday taken
- Failure to keep adequate records can result in tribunal claims and penalties
- Digital attendance tracking provides the audit trail needed for compliance
What the Working Time Regulations Require
The WTR 1998 implements the EU Working Time Directive into UK law. Even after Brexit, the regulations remain in force through the Retained EU Law framework. The key obligations are:
Weekly hour limits
Workers must not exceed an average of 48 hours per week over a reference period (typically 17 weeks, though some industries use longer periods). Workers can opt out of the 48-hour limit in writing, but the opt-out must be voluntary.
Rest breaks
Workers are entitled to:
- A 20-minute uninterrupted rest break when the working day exceeds 6 hours
- 11 consecutive hours of rest in every 24-hour period
- An uninterrupted rest period of 24 hours in every 7-day period (or 48 hours in every 14-day period)
Holiday entitlement
Workers are entitled to 5.6 weeks of paid annual leave per year (28 days for full-time workers, pro-rated for part-time). This can include bank holidays.
Record-keeping
This is where attendance tracking becomes critical. The WTR require employers to keep records that demonstrate compliance with all the above obligations. The records must be:
- Accurate
- Adequate
- Kept for at least 2 years
- Available for inspection by an employment inspectorate
The 2019 CJEU Ruling That Changed Everything
In Case C-55/18 (Federación de Servicios Privados del sindicato Comisiones obreras v Grupo MG Sercurity Services SL), the Court of Justice of the European Union ruled that member states must require employers to establish an objective, reliable, and accessible system for measuring the duration of daily working time.
Why this matters for UK employers
Although this ruling technically applies to EU member states, the UK retained EU law after Brexit, and UK tribunals and the Employment Appeal Tribunal have referenced the ruling as good law. The practical effect is clear:
| Before the ruling | After the ruling |
|---|---|
| Employers tracked holiday only | Employers must track daily working time |
| Timesheets were optional in many sectors | A recording system is expected |
| Audit focused on holiday pay | Audit covers hours, breaks, and rest periods |
| Manual records were acceptable | Systematic, reliable records are expected |
What “objective, reliable, and accessible” means
The ruling does not prescribe a specific method, but it does set a standard:
- Objective: The system records actual working time, not estimates or self-reported approximations
- Relliable: Records are tamper-resistant and accurate enough to demonstrate compliance
- Accessible: Records can be retrieved and reviewed by workers, their representatives, and enforcement bodies
Paper sign-in sheets, ad-hoc spreadsheets, and manual timesheets may not meet this standard. Digital attendance tracking systems that create timestamped records are the most straightforward way to comply.
Record-Keeping Obligations in Practice
What records to keep
UK employers should maintain records covering:
| Record | Why it matters |
|---|---|
| Daily start and end times | Demonstrates compliance with weekly hour limits |
| Break duration and timing | Proves the 20-minute break requirement is met |
| Rest periods between shifts | Shows 11-hour daily rest compliance |
| Overtime hours worked | Tracks whether the 48-hour average is breached |
| Opt-out agreements | Documents voluntary opt-outs from the 48-hour cap |
| Annual leave taken | Proves 5.6-week entitlement is granted |
| Holiday pay calculations | Demonstrates correct holiday pay |
How long to keep records
The WTR require records to be maintained for 2 years. However, best practice is to keep them for at least the current reference period plus the next one — typically 3 to 4 years — to cover tribunal claims and HMRC inspections.
Who can request records
- Employment inspectors from HMRC
- Employment tribunals during claims
- Workers and their representatives (trade unions, employee representatives)
- The Health and Safety Executive (in relevant cases)
Consequences of Non-Compliance
| Risk | Consequence |
|---|---|
| Failure to maintain records | Burden of proof shifts to employer in tribunal |
| Underpayment of holiday pay | Arrears plus potential 100% uplift under s.86 ERA 1996 |
| Working time limit exceeded | Enforcement action by HMRC |
| No break records | Tribunal may find systematic non-compliance |
| Inadequate record system | Potential fines and reputational damage |
In tribunal proceedings, if an employer cannot produce records showing compliance, the tribunal may accept the worker’s estimate of hours worked. This creates significant financial risk — the employer loses the ability to control the evidence.
Practical Steps for UK Employers
1. Implement a digital attendance recording system
Choose a system that:
- Records clock-in and clock-out times automatically
- Captures breaks and their duration
- Creates a tamper-resistant audit trail
- Generates reports that demonstrate WTR compliance
- Is accessible to workers and their representatives
2. Communicate the attendance policy
Employees must understand:
- How and when to clock in and out
- The importance of accurate time recording
- What happens if they forget to record their time
- Their right to review their own records
3. Set up compliance alerts
The system should flag:
- Workers approaching the 48-hour weekly average
- Missing or incomplete daily records
- Insufficient rest periods between shifts
- Workers who have not taken their full holiday entitlement
4. Review and audit regularly
At least quarterly, review:
- Whether all workers are recording time consistently
- Whether any workers are exceeding the 48-hour average
- Whether rest break compliance is being met
- Whether records are complete and accurate
How Leave Balance Supports WTR Compliance
Leave Balance includes attendance tracking with automatic timestamps, overtime tracking with configurable weekly caps, and full audit trail — all included in the flat rate of $10/month with no per-user fees.
Features relevant to WTR compliance:
- Automatic clock-in/out creates objective, reliable records
- Overtime tracking with configurable thresholds flags workers approaching the 48-hour average
- Break tracking demonstrates compliance with rest break requirements
- Audit trail provides tamper-resistant records for inspection
- Manager-scoped views let team leads monitor their direct reports without centralised surveillance
- CSV export for payroll and audit purposes
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Frequently Asked Questions
Does the Working Time Regulations apply to all UK workers?
The WTR apply to most workers, including part-time, temporary, and agency workers. Some exemptions exist — the armed forces, emergency services, and certain transport workers may have different rules. Self-employed individuals are not covered. Employment status should be assessed on a case-by-case basis.
Can workers opt out of the 48-hour limit?
Yes, workers can voluntarily opt out of the 48-hour weekly average in writing. However, employers cannot pressure or coerce workers into signing an opt-out. The opt-out must be genuinely voluntary and can be revoked with at least 7 days’ notice.
What happens if we do not have a time recording system?
If a tribunal or HMRC inspector requests evidence of working time compliance and you cannot produce records, the burden of proof shifts to the employer. The tribunal may accept the worker’s own estimate of hours worked, which could result in significant arrears and penalties.
Do remote workers need to clock in and out?
If a remote worker is subject to the WTR (which most employees are), their working time should still be recorded. Digital attendance tracking works from anywhere with an internet connection — it does not require physical presence in the office.
How far back do attendance records need to go?
The WTR require records to be kept for at least 2 years. Best practice is 3 to 4 years to cover the full reference period cycle and potential tribunal claims.
This article is general information, not legal advice. Consult an employment solicitor for advice specific to your situation.