Employee Time Tracking Legal Requirements UK: Employer Guide (2026)
What UK law requires employers to track: Working Time Regulations, National Minimum Wage records, GDPR rules for time data, and compliant methods for recording employee hours.
Tracking employee hours isn't just good practice — it's a legal requirement. Under the Working Time Regulations 1998, UK employers must keep accurate records. Get it wrong and you risk fines, tribunal claims, and HMRC penalties.
What UK Law Requires
Working Time Regulations 1998
You must keep records showing compliance with:
- 48-hour maximum week (unless employee opts out)
- 20-minute rest break for every 6 hours worked
- 11 consecutive hours daily rest
- 24 hours weekly rest (or 48 hours per fortnight)
- 8-hour maximum for night workers
National Minimum Wage
HMRC requires records proving you're paying at least NMW/NLW:
- Total hours worked each pay period
- Pay received (including deductions)
- Evidence hourly rate meets minimum wage
Penalty: HMRC can fine employers up to 200% of underpayments if records don't prove minimum wage compliance.
What You Must Track
Minimum required:
- Employee name and identifier
- Start and end time each day
- Total hours worked per day/week
- Break times
- Overtime hours
- Holiday taken
Also recommended:
- Project or cost center allocation
- Approval status and approver name
- Any 48-hour opt-out agreements
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Legally Acceptable Methods
Digital Timesheet Software
Cloud-based systems with automatic timestamps and audit trails.
Fully compliant. Strongest evidence.
Clock-In Systems
Biometric, card readers, or app-based clock-in/out.
Fully compliant. Tamper-proof records.
Paper Timesheets
Traditional paper signed by employee and manager.
Compliant, but higher risk if records lost.
No Records / "Trust System"
Assuming salaried staff work set hours without tracking.
Not compliant. Must track even salaried employees.
Common Mistakes
- Not tracking salaried employees — WTR applies to everyone
- Deleting records too soon — Keep 2+ years (6 recommended)
- Not recording unpaid overtime — All hours must be tracked
- Allowing edits after approval — Need audit trail of changes
- Excel without backups — Must maintain secure copies
Penalties
- HMRC: 200% of underpayments + public naming
- HSE: Unlimited fines for Working Time breaches
- Tribunal: Unpaid wages claims go back 2 years
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TimeTally's mobile timesheet app tracks hours, breaks, and overtime with timestamped records that satisfy HMRC and the HSE.
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TimeTallyUK Working Time Compliance Built Into Every Timesheet
TimeTally flags 48-hour week breaches and maintains a complete record of rest breaks — keeping you compliant with Working Time Regulations automatically.
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Compliance Checklist
- ☐ All employees (including salaried) have hours tracked
- ☐ Records include start time, end time, breaks, total hours
- ☐ Manager approval before hours are finalized
- ☐ Records stored for at least 2 years (6 recommended)
- ☐ Audit trail of any changes
- ☐ Weekly hours totaled for 48-hour check
- ☐ Automatic backups
Related Reading
Solutions
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TimeTally handles submissions, approvals, and payroll exports — everything you need to stay compliant and out of HMRC's firing line.
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