Limosa Belgium: declaration before day 1 + Checkin@WorkPosting workers to Belgium? Limosa before the first hour of work, Checkin@Work on site, A1 per worker. You file; the software tracks every deadline.With the WorkAdministration annual subscription you handle the Limosa declaration, Checkin@Work and all related registrations in the software. One subscription, everything arranged.Sending workers to Belgium? You must file a Limosa declaration with the RSZ/ONSS before work starts.On construction sites Checkin@Work is mandatory and A1 certificates must be in order.The RSZ/ONSS and the Social Information and Investigation Service (SIOD) actively inspect. Fines reach per unreported worker.Everything included in the annual subscriptionOne subscription covers unlimited projects and workers in BelgiumNo hidden costs • No limit on projects • Pay once per calendar year

Limosa declaration — Mandatory posting declaration with the RSZ/ONSS before work starts

Checkin@Work — Daily attendance registration on construction sites from €500,000

A1 verification — Continuous verification of posting certificates for all workers

Digital worker file — Automatic checklist per worker with all required documents

Document review — Unlimited review of dossiers and documents

Translations & verifications — French and Dutch translations of employment contracts and documents

Project file & helpdesk — 24/7 access to all dossiers + Dutch-speaking helpdesk (9-17h)

How it worksFrom project notification to fully compliant in four simple steps

Project notification: You report your project to us. We collect all information at once.

Limosa & Checkin@Work: You file yourself the Limosa declaration and set up Checkin@Work for you.

Proof ready: You receive the Limosa certificate (L1) and all confirmations in your project file.

Get to work: You can safely start work in Belgium — everything is ready in case of inspection.

Why this is mandatoryThe RSZ/ONSS (National Social Security Office) and the SIOD actively inspect foreign postings. Without a Limosa declaration a worker is not allowed to start. On construction sites from €500,000 Checkin@Work is mandatory. Non-compliance leads to fines and work stoppage.We make sure you comply with the rules so you can simply work.Who is this subscription for?For companies in construction, engineering and installation, such as: Whether you work one week or six months in Belgium — the subscription covers all legal obligations.

Construction and contracting companies with Belgian projects

Electrical and installation engineering firms

Assembly, maintenance and service companies

Subcontractors posting staff to Belgian projects

What you get with the subscription

Limosa declaration with RSZ/ONSS fully handled

Checkin@Work registration on construction sites arranged

A1 verification for all workers

Digital file per worker (Dutch/French)

Access to Dutch-speaking helpdesk during inspections

Fixed annual price, no surprises

Why companies choose WorkAdministration

File Limosa yourself via the RSZ/ONSS portal → You file yourself the Limosa declaration for you

Set up and maintain Checkin@Work yourself → Full Checkin@Work registration via our platform

Risk of 35% withholding on payments → Main contractor chain made compliant

Fines per unreported worker → Limosa certificate and proof per obligation in your file

Why start todaySelf-service software for your own workers in {country}: {price}per calendar year, unlimited projects and workers.You work. The software handles the paperwork.

You file the notifications yourself in the software, the app checks your uploads

Helpdesk per country optional

Proof per obligation in your file

Subcontractor chain check