Construction Timesheet Requirements UK
CIS compliance, site-based time tracking, and legal requirements for construction industry timesheets.
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.
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Why Construction Has Stricter Requirements
- CIS (Construction Industry Scheme) — HMRC requires detailed records of subcontractor payments and deductions
- HSE oversight — HSE enforces the Working Time Regulations limits, and long hours are a known fatigue risk on site
- 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% for registered subcontractors, 30% for unregistered, 0% with gross payment status
- 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.
Separate records for CIS subcontractors
Don't mix employee and subcontractor records
Track labour vs materials
CIS deductions apply to labour only
Verify before first payment
Record verification date and deduction rate
CIS Penalties: A late CIS monthly return costs £100 at one day late, £200 at two months and more after that, and HMRC can fine up to £3,000 if you can't show your CIS records. Good timesheet records prevent errors.
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Working Time Regulations
Long days and early starts are common in construction, and fatigue causes accidents. HSE enforces the working time limits, so your timesheets are your evidence.
| Limit | Requirement |
|---|---|
| 48-hour week | Average over 17 weeks (unless opted out) |
| Daily rest | 11 consecutive hours between shifts |
| Weekly rest | 24 hours per week or 48 per fortnight |
| Rest breaks | 20 minutes if working more than 6 hours a day |
HSE Warning: Breaching the working time limits can lead to enforcement action and prosecution, especially where long hours contribute to an accident. Timesheet records are how you show you stayed within them.
Common Mistakes
- Paper timesheets that get lost — Use mobile-friendly digital timesheets
- Not tracking CIS subcontractors — "They invoice us" isn't enough
- Mixing labour and materials — CIS deductions apply to labour only
- No site/project allocation — Can't accurately cost jobs
- Retrospective timesheets — Daily or end-of-shift entry is best
- No site manager approval — Worker self-reporting isn't acceptable
- Deleting records too soon — Keep pay and hours records for 6 years (the minimum wage record period); CIS records for at least 3 years
Best Practices
- Use digital timesheets accessible from site — Paper doesn't work on muddy sites
- Daily entry, weekly approval — Workers log daily, manager approves Friday
- Tag each entry with project code — Enables accurate job costing
- Separate systems for employees vs subcontractors — Makes CIS reporting easier
- Flag excessive hours automatically — Alerts for 60+ hour weeks
- 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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