Every consultancy chases timesheets. Somebody in operations sends the Friday message, then the Monday message, then the direct message to the three people who are always the same three people. It is the least loved job in the firm, and it never ends.
The usual explanation is that people are lazy about admin. That is unkind and mostly wrong. Timesheets are late for specific, fixable reasons, and the fixes are in the tool rather than in the people.
The reasons
The timesheet is somewhere else. The work happens in the editor, the ticket tracker and the calendar. The timesheet is a separate site with a separate login that nobody opens until they are told to. Distance is friction, and friction becomes Monday.
The person has to remember what they did. By Friday afternoon, Tuesday is a blur. A blank timesheet asks a question the person cannot easily answer, so they put it off until they have to guess.
The choices are wrong. A dropdown of two hundred project codes, half of them closed, with the one they need called something slightly different from what the client calls it. Every entry is a small search.
Nothing happens when it is late. The chasing is a person's job, so it is polite, batched and easy to ignore. The consequence of a late timesheet is a message from a colleague, which is no consequence at all.
Nobody sees the point. The person filling it in never sees what the timesheet becomes. It vanishes into a report they are not shown, for a purpose nobody explained, so it feels like surveillance rather than bookkeeping.
The fixes
Start from the plan. If a person is booked onto a budget for the day, the timesheet should already know that. Logging time is then confirming the plan, or correcting it, rather than reconstructing the day from nothing.
Offer the few choices that apply. The budgets a person is booked on this week, and the ones they logged against last week. Not the whole catalogue.
Make it daily, and make it small. A day takes thirty seconds to log when it is today. A week takes twenty minutes to reconstruct when it is Friday. The weekly submission can stay; the entry should be daily.
Let the system chase. A message from the tool, in the channel the person already lives in, at the same time every week, to the person and their approver together. It is consistent, it is not personal, and it frees the human who used to do it.
Show people what it is for. The budget they logged against, with its remaining days, right there on the timesheet. When somebody can see their Tuesday become a number the project depends on, the timesheet stops being surveillance and starts being part of the work.
What you get back
The obvious return is that the chasing stops. The less obvious one is that everything downstream becomes trustworthy earlier. Budget burn is right on Wednesday rather than at month-end. Utilisation is right on the first. Invoices go out on the date, because the time behind them is already in. And the person who used to send the Monday message gets their Monday back.
Bitmap starts the timesheet from the plan, offers the budgets that apply, and chases the late ones in Slack so nobody on your team has to.