The verdict in three sentences
For a Dubai contractor with 900 site workers across 14 projects, unverified hours and padded overtime estimated at 6 % of the labour bill cost far more each month than a time and attendance app. A custom app at 40,000 to 75,000 USD on the UAE market, delivered in 3 months, with QR or photo check-in, geofencing and offline mode, usually pays back in under 6 months. The condition is to wire it into payroll and the Wage Protection System (WPS), with foreman sign-off, not just add another attendance register.
Where ghost hours come from and what they cost
On many Dubai sites, attendance still relies on paper muster sheets or a biometric reader at the labour camp gate, then manual entry by a timekeeper and again by payroll. Gaps appear at every step: absent workers signed in by colleagues, overtime extended on paper, workers counted twice when moved between sites mid-week, and supplier manpower billed for more heads than were present.
The CFO of a mid-size contractor in Al Quoz estimates these gaps at 6 % of site labour cost. With an average fully loaded cost of 2,800 AED a month per worker (basic pay, overtime, food allowance), the monthly bill is 900 x 2,800 = 2,520,000 AED. Six percent is 151,200 AED a month, about 41,000 USD.
| Source of leakage | Mechanism | Estimated share of losses |
|---|---|---|
| Absent workers checked in | Signed by a colleague | 30 % |
| Padded overtime | End of shift recorded later | 30 % |
| Cross-site duplicates | Same worker on two sheets | 15 % |
| Manpower supplier overbilling | Heads billed but not on site | 15 % |
| Re-entry errors | Manual copy into payroll | 10 % |
| Late payroll | Unpaid hours complaints, WPS penalties | indirect effect |
App features and what they cost
The app must work on sites where signal drops inside structures and basements, and for workers who do not all carry smartphones. Check-in happens on the foreman's rugged phone or tablet, scanning each worker's QR badge or taking a timestamped photo.
| Feature | Purpose | Share of budget (order of magnitude) |
|---|---|---|
| QR or photo check-in | Identify each worker unambiguously | 20 % |
| Geofencing per site | Reject check-ins outside the perimeter | 10 % |
| Offline mode and sync | Check in without signal, upload later | 15 % |
| Foreman sign-off | Make site supervisors accountable | 10 % |
| Payroll and WPS export | File matching the payroll system | 15 % |
| Dashboard per project | Headcount, hours, cost, anomalies | 20 % |
| Admin and badges | Worker records, QR printing, supplier crews | 10 % |
In the UAE, local agencies quote this scope at roughly 40,000 to 75,000 USD as a 2026 order of magnitude. A nearshore team such as Kolonell in Dakar prices it within its complex custom app grid, 7,000,000 to 15,000,000+ FCFA (10,670 to 22,870+ EUR), with the exact figure set in a quote; maintenance plans start at 35,000, 75,000 or 120,000 FCFA a month (53, 114 or 183 EUR). A realistic timeline is 3 months: 3 weeks of discovery and a pilot site, 7 weeks of build, 2 weeks of phased rollout to all 14 sites.
Also budget 14 to 20 rugged devices (about 300 to 600 USD each), badge printing and a short training per foreman, ideally with an interface in English, Hindi and Urdu.
Rules that keep attendance data reliable
- Mandatory photo at first check-in of the day, reviewed by the foreman when in doubt.
- Geofence radius of 150 to 300 metres depending on site size, with an alert for any forced out-of-zone check-in.
- Daily close: the foreman signs off the day before 7 pm, otherwise an alert goes to the project manager.
- Overtime declared in the app with a reason, approved by the project manager, and capped in line with UAE labour rules.
- Midday heat break: the app blocks check-ins for outdoor work during the summer midday break hours, which helps prove compliance.
- Payroll: the export feeds payroll and the WPS salary file directly.
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Ravi, CFO of a Dubai contractor, picks a 60,000 USD app and 16 devices at 450 USD, so 7,200 USD. Total investment: 67,200 USD, plus about 1,500 USD a month for support and hosting.
He does not expect to eliminate leakage, only to cut it from 6 % to 2 % of the labour bill: 4 points of 2,520,000 AED, or 100,800 AED a month, about 27,450 USD. Net monthly gain: 27,450 - 1,500 = 25,950 USD. Payback: 67,200 / 25,950 = 2.6 months. With only a 2-point reduction, payback comes in 5.2 months, still inside the 6-month target. Payroll closes in 1 day instead of 3.
FAQ
Do workers need smartphones?
No. The foreman checks in the crew on a shared device and each worker shows a QR badge. Plan one device per 50 to 70 workers.
What happens without signal on site?
Check-ins are stored on the device with time and GPS position, then synced when signal returns. A site can stay offline for several days without data loss.
Is geofencing reliable around high-rise sites?
GPS accuracy varies from 5 to 30 metres near tall structures. A 150 to 300 metre radius absorbs that margin without allowing check-ins from another site.
Does it integrate with our payroll and WPS file?
The export is built to your payroll system's format, usually a structured CSV or the WPS SIF file. A direct API integration is quoted separately.
How long to equip all 14 sites?
Three months in total, including a 2-week pilot and 2 weeks of rollout. Allow 2 hours of training per foreman.
Let's scope your project. We start with a pilot on one site, then roll out to all your projects in 3 months with a payroll-ready export. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
