Being technically compliant with CIAW today is not the same as being ready for the stricter mandatory time registration rules taking effect in 2027 — and many Belgian construction companies will find gaps they didn’t know existed. Use this practical checklist to assess your current setup across registration coverage, subcontractor management, payroll connections, multi-site visibility, and documentation quality before the deadline arrives.

Belgium is extending mandatory time registration to more sectors from 2027 — construction companies already operating under CIAW will face expanded scope, stricter audit requirements, and less tolerance for incomplete subcontractor records. This article explains the regulatory timeline, the specific changes that affect construction, and the steps every company should take now rather than waiting until the 2027 deadline forces a costly rush.

Time registration in Belgian construction is not optional: every worker on a construction site must be electronically registered via Check in at Work (CIAW) before starting work, and failing to comply means fines, audit exposure, and potential liability for the main contractor. This guide covers the complete picture — legislation, registration methods, who is responsible for subcontractors, and which digital tools make CIAW compliance reliable, fast, and payroll-ready.