Short answer: no, almost certainly not. An Excel file that you or your employees fill in by hand doesn’t meet the requirement that a time registration system be “objective, reliable, and accessible” — the core standard behind Belgium’s time registration obligation taking effect on 1 January 2027. Here’s exactly why, and what does comply.
Why Excel is so popular for time tracking
Excel costs nothing extra if you already use it, everyone knows how it works, and it’s fast to set up: one tab per month, one row per employee, columns for start and end time. For an SME without an HR department, that’s an understandable choice — until the 2027 law sets a different bar than “works well enough internally.”
The legal bar: objective, reliable, accessible
The legislation doesn’t just require “some kind of record.” It requires a system that is objective, reliable, and accessible — three requirements a manually filled-in Excel file structurally can’t meet:
- Objective means the record doesn’t depend on what someone remembers or types in, but on an automatic, verifiable event — a badge tap, an app check-in, a timestamp the system generates itself.
- Reliable means the data can’t be changed afterward without a trace. Anyone with edit rights can change an Excel cell, with no record of the original value left behind.
- Accessible means the data is available in a structured, auditable way to whoever is entitled to see it — not scattered across loose files on someone’s laptop.
A spreadsheet fails on all three counts: entry is manual (not objective), cells can be freely edited with no log (not reliable), and the file usually lives on one computer or in one shared folder with no structured access (limited accessibility).
Where it actually breaks down in practice
These are the most common ways an Excel-based time log fails in practice, separate from the legal angle:
| Problem | What happens |
|---|---|
| Forgetting to fill it in | Someone reconstructs the whole week from memory on Friday, with 15-30 minute error margins per day |
| Formulas that break | One mis-dragged cell, and the overtime calculation is wrong for the rest of the month |
| No version control | Two people edit the same copy at once; whoever saves last “wins,” with no one noticing |
| No audit trail | A correction made after the fact is indistinguishable from the original entry |
| Part-time and leave by hand | Every exception — parental leave, a public holiday, a half day — is a manual adjustment that’s easy to get wrong |
What does comply
A system that meets the requirements shares a few characteristics:
- Automatic registration — a badge tap, app check-in, or similar action that the system itself timestamps, with no manual entry.
- A full audit trail — every clock-in and clock-out is stored as an immutable record, not a cell that can be overwritten.
- Automatic handling of exceptions — part-time hours, leave, and overtime are calculated by the system, not by a formula someone has to maintain themselves.
- Structured, auditable access — data available in a consistent format on request from a labour inspector or your own HR office.
Excel vs. a digital time registration system
| What matters | Excel file | Digital system (e.g. RFID or webapp) |
|---|---|---|
| Objective & verifiable | No — manual entry | Yes — automatic timestamp |
| Audit trail | None | Full, per clock-in and clock-out |
| Part-time & leave | Manual formula | Calculated automatically |
| Risk at inspection | High | Built to meet the requirements |
| Time spent per month | Adding up and correcting hours | The report builds itself |
For the full picture on the legislation — including what’s confirmed and what isn’t yet — see our guide: Time Registration 2027.
The switch is smaller than it looks
Giving up Excel feels like a project to a lot of SMEs. In practice it isn’t: you don’t need to roll out an enterprise HR suite to comply. Exalise Time Management is time registration software built specifically for businesses still running on Excel or paper today — you can start with a webapp on a tablet you already own, with no RFID hardware, and scale up later. Read more on why this segment needs something different from an enterprise platform in Time Registration for SMEs.
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Tell us how you track hours today — Excel, paper, or nothing formal at all — and we’ll show you exactly what changes, what it costs, and how quickly you’ll be up and running.