How to check a timesheet in five minutes, before you sign it
Echipa HR 365 · reviewed 2026-09-06 · 5 min read
A timesheet for 80 people has over two thousand cells and nobody reads them. The useful check is not a read-through, it is a list of seven controls that look for impossible patterns — each takes under a minute and together they catch most real errors.
The seven controls
| Control | What you look for | What it usually means |
|---|---|---|
| Completely empty days | Cells with no symbol at all | Somebody forgot to record, not that the person was absent |
| A month with no absence at all | Someone with 21 perfect days | Possible, but worth a look — especially on large teams |
| Unusual symbols | Codes used once or twice | Either a typing error or a situation nobody discussed |
| Unrecorded overtime | Days with long attendance and no overtime code | Hours worked and not declared |
| Leave with no request | Leave days in the timesheet with no approval on record | The records and the timesheet have drifted apart |
| Isolated weekends worked | A single weekend day, for a single person | Either a genuine call-out or a date error |
| Totals that do not match | The sum per person vs the sum per department | A cell edited after the calculation |
The most frequent error, and why it happens
The first on the list — the empty day — usually accounts for half of all problems. The cause is almost always the same: somebody was away, it was sorted verbally, and nobody marked anything. At the end of the month, the empty cell can mean presence, absence or leave, and whoever fills it in usually chooses presence.
The repair is not at the checking stage, it is at recording: a day must carry a symbol, and the absence of one must be a visible error rather than a blank cell that looks like any other.
Who checks what
Three levels, each with what it can know
- The shift lead or manager — checks their own people: who was there, who was not, what happened on days marked differently
- HR — checks consistency with the records: leave has requests, absences have reasons, hours have confirmation
- Whoever signs — checks the seven patterns and the totals; they do not re-read the cells
The second level is the one most often missing and the only one that catches the drift between the timesheet and the leave records. Without it, the two documents describe different months, and the difference surfaces only at an external check.
What happens after signing
The moment of signing has to mean something: after it, any change stays visible, with the author, the date and the reason. Not as a measure of distrust, but because a timesheet that can be changed silently after signature proves nothing about that month.
Later corrections are normal and do happen — a certificate brought in late, an error discovered. What matters is that the signed version stays recoverable and the difference stays explainable.
Where to start
Take last month’s timesheet and apply the first two controls. If you find empty days, you already have the subject for a conversation with the shift leads — and it is a conversation about recording, not about attendance.
Then check, for a single month, whether every leave day in the timesheet has an approved request. It is the control that most often reveals that the two records have started to diverge.
What you do with what you find
An error found at checking has three possible destinations, and choosing wrongly between them is why the same errors reappear month after month. A silent correction fixes this month and guarantees a repeat; an individual conversation fixes one person; a change of procedure fixes the cause.
| What you found | Where it is resolved | Why not elsewhere |
|---|---|---|
| One wrong cell, isolated | Correction, with a trace | It does not justify a conversation |
| The same error by the same person, third month running | An individual conversation | The silent correction told them it was fine |
| The same error by several people | The procedure or the form | It is not a people problem, it is an instruction problem |
| Errors that appear only in busy months | The moment of recording | It gets filled in late, from memory |
The third row is the most important and the most rarely applied. When three shift leads make the same mistake, the likely explanation is not that all three are careless but that the instruction is ambiguous — and an ambiguous instruction is fixed once and disappears from every following month.
When you check
Weekly, not monthly. A week later, a shift lead remembers what happened on Tuesday; three weeks later they reconstruct from assumptions, and the check becomes a formality that produces falsely confirmed data.
The weekly check takes, in practice, under ten minutes per team, because it works on a quarter of the data and on fresh events. The monthly one takes an hour and catches less.
Who actually signs the timesheet?
It depends on the organisation, but the principle is the same: whoever can answer for the content signs, not whoever compiles it. If the signatory cannot explain an anomaly, their signature adds nothing.
What if I find an error after sending it on?
You correct it with a trace and tell the recipient the same day. An announced correction is an error; one discovered by somebody else three months later becomes a trust problem with the whole document.
Is it worth checking months where nothing unusual happened?
Yes, and it takes the least time. Quiet months are exactly the ones where the check gets skipped, and they are also the ones where an empty cell passes unnoticed.
A timesheet that flags days with no symbol and mismatches on its own
Empty cells, leave without a request and totals that do not match are marked before signing — so the check genuinely takes five minutes.
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