✦ Sector
Time tracking software for construction: what it actually needs to do
Time tracking software for construction has to do more than log hours - it has to allocate that time to the right cost code, treat CIS subcontractors and PAYE staff differently, and keep working when there's no signal on site. Here's what actually matters when choosing one.
Haystak · 11 August 2026 · Updated 11 August 2026 · 7 min read
Time tracking software for construction needs to capture who worked, on what, for how long, on which contract and cost code - and treat CIS subcontractors differently from PAYE employees when it comes to payment and tax. A generic clock-in app misses most of that.
The category looks simple from the outside: someone taps a button, an hour gets recorded. In practice it sits at the point where site reality, cost accounting and payroll compliance all meet, which is why so many contractors end up with a tool that half-fits and a paper timesheet backup.
Allocation to cost codes is the actual job
A clocked hour is only useful commercially once it's attached to a contract and a cost code - groundworks, first fix, snagging, and so on. Without that, the hours sit in a payroll total but never reach the cost-to-date figure a QS needs for CVR reporting.
The better tools let a worker pick a job and activity from a short list rather than typing free text, and default to whatever they logged yesterday to cut down on errors. The worst ones make cost coding an afterthought bolted onto a consumer time-clock app, and the coding never actually happens on site.
CIS subcontractors and PAYE staff are not the same problem
Most sites run a mix of directly employed staff and subcontractors operating under the Construction Industry Scheme (CIS). They need different treatment in the same system, not two separate ones bolted together after the fact.
| PAYE employees | CIS subcontractors | |
|---|---|---|
| Recorded as | Hours worked | Hours or output, depending on contract |
| Feeds into | Payroll run, tax and NI | Payment application, CIS deduction verification |
| Verification needed | Employment status only | CIS registration status with HMRC |
| Rate basis | Hourly or salaried | Often day rate or measured work |
Getting this wrong isn't just an admin headache - misclassifying labour or failing to verify CIS status correctly is a compliance issue with HMRC, not just a bookkeeping one. Any system handling subcontractor time should be able to hold and check CIS status, not just log hours against a name.
Geofencing helps, but it has real limits
Geofenced clock-in - confirming someone is physically on site before letting them start a timer - catches the obvious cases: someone clocking in from home, or a shared login used for two people. It's a reasonable control, and most decent apps offer it.
- It doesn't verify who is actually holding the phone, only where the phone is.
- Multi-plot or large sites can span several postcodes, so the geofence has to be drawn generously or it produces false failures all day.
- It does nothing for the actual cost coding - being on site tells you nothing about which activity someone spent the hour on.
- Signal is often poor enough on live sites that geofence checks time out and workers end up clocking in later than they actually started.
Offline working isn't optional
Construction sites - especially groundworks, basements and rural locations - routinely have no signal. A time tracking app that requires a live connection to clock in simply won't get used, and workers revert to a paper sheet that someone re-keys at the end of the week, which defeats the point of buying software at all.
The apps that hold up on site record the entry locally, timestamp it on the device, and sync when a connection reappears - usually back in the site cabin or the van. Anything less and you're back to reconciling paper.
Payroll integration decides whether the data gets used
Time data that has to be exported, cleaned up and re-typed into payroll every week rarely survives contact with a busy office. The system should push approved hours straight through, split correctly between PAYE payroll and CIS subcontractor payments, without a manual step in between.
- 01Confirm which payroll and accounting package you already run, and check the time tracking tool has a genuine integration, not just a CSV export.
- 02Check how CIS deductions are calculated and whether the tool holds verified subcontractor status or expects you to manage that separately.
- 03Test the approval flow - a foreman needs to sign off hours before they hit payroll, and that step is where most disputes get caught early.
- 04Pilot on one site with a mix of PAYE and subcontract labour before rolling out across the business.
Most of this is handled well by mature off-the-shelf construction time tracking products - this is not usually a category worth building from scratch. Where it tends to fall down is the connection to whatever accounts or CVR system already sits behind it, which is the same integration gap covered in construction software for contractors.
If your current time tracking tool captures hours fine but the cost coding or payroll link is manual, that's usually a smaller integration job than it looks - get in touch and we'll take a look at what's already in place before recommending anything new.
✦ Where this fits
More on this from us: our construction software work.