Short answer: a badly filled timesheet does not cost you a line of data entry, it costs you revenue that never gets billed, cash that arrives late and payroll that has to be corrected. The timesheet is the input to both invoicing and payroll: any error that goes in comes out somewhere else, later, and more expensive. It is a financial document, not an administrative one.
The short version
- Incomplete timesheet → hours vanish, and the profitability of the engagement with them.
- Late timesheet → the invoice goes out late, the client pays later, cash flow tightens.
- Wrong timesheet → the invoice is wrong, the client disputes it, and collection can slip by three months.
- Mis-recorded absences → payroll is wrong, and that money is almost never recovered.
Why the error never stays in the timesheet
The line that carries the video is this one: every error in a timesheet is a shockwave. That is literally true, because the timesheet is not a terminal document. It is a source. Four processes plug into it, and none of them checks what it receives.
| What plugs into the timesheet | What happens when it is wrong |
|---|---|
| Invoicing | Wrong amount, or an invoice that never goes out |
| Cash | Collection slips by the dispute cycle, not the payment terms |
| Payroll | Absences, hours and variable pay computed on a false base |
| Project margin | A fixed price that looks healthy because days were never declared |
| Client relationship | A dispute, which mostly costs credibility on the next invoice |
The fourth line is the nastiest, because it is silent: undeclared days make a fixed-price project look as though it is inside budget. The team believes it right up to delivery.
Lateness costs more than error
An error can be corrected. Lateness cannot: it propagates. If the month's timesheet is approved three weeks after month end, the invoice cannot go out before that, and the client's payment clock only starts then. The slip is not three weeks: it is three weeks added to every due date, month after month.
A dispute is worse. A correct invoice is paid on agreed terms; a disputed one goes back into discussion, waits for evidence, a credit note, a rebill. The video talks about three extra months, which is an order of magnitude anyone who has ever chased a client over a time entry they do not recognise will find familiar.
That is exactly the mechanism our piece on fast billing describes: the cash lever in a services business is almost never renegotiating terms, it is the date the invoice leaves.
What that asks of the tooling
The video ends on a requirement rather than a feature: make sure you have a system that genuinely connects activity to invoicing. Connected means three specific things.
- One entry. The time an employee declares is the time that gets billed, with no intermediate pass through a spreadsheet.
- Absences already in place. A timesheet pre-filled with approved leave gets checked; an empty one gets filled from memory a week later.
- Approval that counts. The manager-approved timesheet is the basis for the invoice, which makes the invoice defensible rather than debatable.
Where time is already captured elsewhere, in Jira typically, the right move is not to re-key it but to pull it through: see connecting Jira to AlibeeZ.
Video transcript
Full transcript, translated from the French and lightly tidied for reading.
You think you are billing 100% of what you produce? That is rarely the case. Why? Because a timesheet that is badly filled, or not filled at all, makes hours disappear, and your profitability with them.
And here is the worst of it: if the timesheet is late, the invoice is late. Your client pays later and your cash flow suffers. If the timesheet is wrong, the invoice is wrong, the client disputes it, and sometimes you wait three extra months to be paid. In the same way, if absences are recorded badly, payroll is wrong. Again you lose money, often without ever recovering it.
Every error in a timesheet is a shockwave: invoicing, cash, payroll, the client relationship, even project steering. A timesheet is not administration: it is your revenue, your credibility and your cash. So make sure you have a system that genuinely connects your activity to your invoicing, because a badly filled timesheet loses you money immediately.
Read next
- The activity report: an essential tool for an organisation : why this document carries the health of the business.
- The time tracking module : a timesheet in three clicks, consistent absences.
- The invoicing module : generated from approved time, with no re-keying.
Frequently asked questions
What exactly is an activity report or timesheet?
It is the record, per person and per period, of time spent on each project or activity, absences included. In an organisation it is the document that feeds client invoicing, project margin and the variable elements of payroll all at once.
What happens when a timesheet is submitted late?
The invoice cannot be issued before it, so the client's payment clock only starts from that date. Late entry does not cost a one-off delay: it pushes every subsequent due date back until the rhythm is recovered.
How do you make timesheet completion reliable?
By removing the re-keying rather than reminding people about it. A timesheet pre-filled with approved absences and, where relevant, with time pulled from delivery tools, becomes a few minutes of checking instead of a reconstruction from memory.
