Construction Timesheet Requirements UK

Construction sites have unique timesheet challenges: multiple sites, subcontractors, day-rate workers, and CIS deductions. Get it wrong and you risk HMRC penalties and HSE enforcement.

Why Construction Has Stricter Requirements

• CIS (Construction Industry Scheme) — HMRC requires detailed records of subcontractor payments and deductions
• HSE oversight — Must prove Working Time Regulations compliance to prevent fatigue accidents
• Project costing — Need to track which workers worked on which sites
• Mixed workforce — Employees, agency workers, and subcontractors all need different handling

What Construction Timesheets Must Include

Worker Information

• Full name and unique ID (NI number or employee/contractor ID)
• Employment status (employee, CIS subcontractor, agency)
• Trade/role

Time & Location

• Date worked
• Site/project location — Essential for project costing
• Start and end time (or total hours if day-rate)
• Break times
• Overtime hours

Payment Information

• Rate of pay (£/hour or £/day)
• Gross pay earned
• CIS deduction (20% or 30% for subcontractors)
• Materials cost separate from labour

Approval

• Site manager signature/approval
• Approval date
• Any notes (weather delays, site issues)

CIS Compliance

If you hire subcontractors, you must operate CIS. Your timesheets are critical evidence.

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Working Time Regulations

Construction has the highest rate of long-hours working in the UK. HSE specifically targets construction for Working Time enforcement because fatigue causes accidents.

Common Mistakes

1. Paper timesheets that get lost — Use mobile-friendly digital timesheets
2. Not tracking CIS subcontractors — "They invoice us" isn't enough
3. Mixing labour and materials — CIS deductions apply to labour only
4. No site/project allocation — Can't accurately cost jobs
5. Retrospective timesheets — Daily or end-of-shift entry is best
6. No site manager approval — Worker self-reporting isn't acceptable
7. Deleting records too soon — Keep for 6 years minimum

Best Practices

1. Use digital timesheets accessible from site — Paper doesn't work on muddy sites
2. Daily entry, weekly approval — Workers log daily, manager approves Friday
3. Tag each entry with project code — Enables accurate job costing
4. Separate systems for employees vs subcontractors — Makes CIS reporting easier
5. Flag excessive hours automatically — Alerts for 60+ hour weeks
6. Cloud backup daily — Don't lose 3 years of records to theft

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Inspection Checklist

• ☐ All site workers have timesheet records
• ☐ Each entry shows: date, hours, site/project, pay rate
• ☐ CIS subcontractors clearly identified with verification status
• ☐ Site manager approval recorded
• ☐ Records stored securely for 6+ years
• ☐ Weekly hours totaled for WTR compliance
• ☐ Labour and materials separated for CIS
• ☐ Can produce reports by worker, by site, by month

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