Home › Guides

What goes on a job sheet, and why the paper one costs you money

A job sheet has one job: to be the record that survives. Not the tidiest version of the day, not the one that reads well — the one that is still there in four months when a customer queries a line, and that has enough on it to settle the question in a minute.

What has to be on it

Whatever else you add, these are the parts that get used later:

• Which job and which property — the address does more work here than the customer name, because one payer can have forty addresses.
• Date, start and finish time, and who was there.
• What was actually done, in plain words. Not "works carried out".
• Materials and parts used, with quantities.
• What was found and left undone — the pump on its way out, the flue that wants attention.
• Photos. Before, after, and anything that surprised you.
• A signature from whoever was there.

The line most sheets are missing

It is the sixth one: what you found and did not do. Every visit produces a small list of things the engineer noticed. On a paper sheet it goes in a box nobody reads again. Recorded against the property, it is a list of work already surveyed, already needed, and already believed by the customer. That list is worth more over a year than the invoices the sheets produced.

Why paper costs more than it looks

The pad itself is cheap. What it costs is everything downstream. Someone types it up, which means someone reads handwriting and guesses. Hours get rounded down, because undercharging feels safer than overcharging when you are not sure. Materials that were written on the back of a delivery note never make it onto the invoice at all. And when a customer queries something, the sheet is in a box in the office and finding it is an afternoon.

None of that is a discipline problem. It is a distance problem: the further the record travels from the moment it was made, the more of it evaporates.

What changes when it is done on the phone

The sheet is filled in where the work happened, by the person who did it. Hours come off a timer rather than a memory. Photos attach themselves to the right job instead of sitting in a camera roll. The customer signs on the screen while they are standing there, which is the only moment they are guaranteed to be available. And by the time the engineer is back in the van, the office has it.

That last part is what shortens the gap between the work and the invoice, and that gap is where most of the money goes missing. More on that in getting paid faster.

One sheet, not three versions

The other quiet win is that there is one version. No pad, no photo on somebody's phone, no note in a group chat. When a query comes in, whoever picks up the phone can see what the engineer saw, including the photograph, without ringing him on his day off.