CheckinAtWork (CIAW) — mandatory site registration (NSSO)
Check In at Work? Fully automatic.
From 2027, every worker must check in and out on the construction site themselves — at the moment itself. With AutoCheckIn, your workers don't have to do anything: the phone stays in their pocket and the app registers them fully automatically based on their location on site. No badges, no time clock, no arguments. You comply with the law, your crew just keeps working.
30 days free, no payment card
How it works
In one minute: your crew is checked in and out on site automatically, and here is what you get on top.
All features →30 days free, no payment card
Fully automatic
Your workers don't have to do a thing. The phone can simply stay in their trouser pocket. The app notices by itself when someone arrives on site and when they leave — through the site zone, automatically via GPS — and registers the check-in and check-out for Check In at Work. Nobody has to press anything, nobody can forget it.
An inspection drops by? Everything is in order, for everyone on site. Your subcontractors included.
Prefer to clock in yourself? On site, one button in the app does it too. The app then checks via GPS that your worker is really on site.
- No badges
- No time clock
- No box on the site cabin
- No extra hardware
- In and out, registered automatically
Added benefit
Your hours, straight from the site
Today you wait for paper timesheets that come in late and that the office has to retype — hours written down from memory on Friday evening, nicely rounded. Rarely in your favour.
With AutoCheckIn you see live what time everyone arrives at and leaves the site — your subcontractors included. Exact hours, the same day, ready to invoice.
All about time tracking in construction- No more retyping paper timesheets
- Exact arrival and departure times, per site
- Check subcontractors' hours against their invoice
- Invoice on real figures, the same week
New rules ahead
Ready for 2027
Check In at Work (CIAW) has existed since 2014, but on 1 April 2027 it gets stricter: not only checking in but also checking out becomes mandatory, registration must happen at the moment itself (registering in advance is no longer allowed) and every worker must do it themselves — on arrival and on departure. Anyone who is not compliant risks hefty fines.
With AutoCheckIn you are ready for those rules today: check-in and check-out happen automatically, on the site itself, in the name of every worker.
All about Check In and Out at Work 2027Fair pricing, fixed or flex
Fixed or flex, you choose per person. For all your employees, freelancers and subcontractors on site. Set someone to inactive and their billing stops immediately.
€7
per user per month
excl. 21% VAT
or flex: €0.50 per site day
only the days someone was checked in, billed afterwards
- Fixed or flex, chosen per person, subcontractors included
- Flex: checking in and out several times in one day counts as one site day
- Someone inactive? Their billing stops
- Try free for 30 days, no payment card needed
- Cancel monthly
- Everything included: app, automatic check-in and check-out
30 days free, no payment card
Example: 12 of your own workers and 8 subcontractors active in your crew? Then you pay 20 × €7 = €140 per month, excl. VAT. A subcontractor who only comes 5 days? On flex: 5 × €0.50 = €2.50. Set someone to inactive and they no longer count from the next month.
Frequently asked questions
Everything construction companies ask us about Check In at Work (CheckinAtWork / CIAW) and the registration obligation in construction.
What is Check In at Work?
Check In at Work (also written CheckinAtWork, abbreviated CIAW) is the mandatory electronic attendance registration of the NSSO (RSZ/ONSS) on large construction sites. Everyone who works on such a site — employees, self-employed workers and subcontractors — must be registered. AutoCheckIn automates that site registration: your workers are checked in and out on site automatically, ready for the mandatory check-in and check-out of 2027.
What does the abbreviation CIAW stand for?
CIAW stands for CheckInAtWork, the electronic attendance registration on construction sites with the NSSO. You will also see CAW or CIAOW (Check In and Out at Work, adding the check-out from 2027). It always means the same thing: recording who is present on the site. AutoCheckIn makes sure every worker is checked in and out on site automatically — ready for the check-out that becomes mandatory from 2027.
From what amount is Check In at Work mandatory?
The CheckinAtWork obligation applies to construction sites with a total value of €500,000 (excl. VAT) or more. If your site is above that threshold, everyone who works there must be registered — including subcontractors and the self-employed. From 2027, mandatory check-out and real-time registration are added.
What changes for CheckinAtWork in 2027?
On 1 April 2027, check-out becomes mandatory alongside check-in. Registering in advance will no longer be allowed: every worker must check in and out themselves, at the moment itself and on the site itself. Anyone who is not compliant risks fines. Read all the details on our Check In and Out at Work 2027 page.
Do I need extra hardware?
No. No badges, no time clock, no box on the site cabin. The phone your worker already carries is enough.
What about subcontractors and freelancers?
You add them just as easily as your own people — with name, national register number and mobile number. A subcontractor who only comes a few days a month? Put them on flex: €0.50 per site day excl. VAT, instead of €7 a month. Someone no longer works for you? Set them to inactive and their billing stops.
What if a worker doesn't have a smartphone?
Every worker registers with the app on their own phone. That's what the law wants: everyone registers themselves. In practice almost everyone has a phone in their pocket — and then everything happens by itself.
How much does AutoCheckIn cost?
You choose per worker: fixed at €7 per user per month, or flex at €0.50 per site day, both excl. VAT. With flex you only pay for the days someone was checked in on site, billed afterwards on the same monthly invoice. A flex user with no registrations costs nothing. You can switch at any time, effective from the next month. If you set someone to inactive, their billing stops. You start with 30 days free, no payment card needed, and you can cancel monthly.
Does it work without signal on site?
Yes. No signal in the basement or on a remote site? The registrations are simply stored on the phone and sent as soon as there is a connection again. Nothing gets lost.
Can I see what time my people arrive at and leave the site?
Yes, live. Every arrival and departure is registered at the moment itself and appears in your overview straight away — per site and per person, subcontractors included. That way you replace paper timesheets that come in late with exact hours, and you can invoice faster. Read more on our page about time tracking in construction.