
A month-old hours figure is history
When a site's hours only become clear in the middle of the following month, at payroll time, the information is correct but late. By then the contract has gone either well or badly, and neither can be changed.
In construction this matters more than in most industries, because projects are short. On a two-month renovation, a one-month delay means half the work is done before any figure shows anything.
This article looks at which decisions hours data drives, what a delay costs, and which three figures are enough for a small construction company's weekly meeting.
Four decisions that hours drive
Staffing. Is the crew enough for this phase, or should people move from another site? The decision is made within days, at most a week.
The price of extra work. When the client asks for a change, they want a price the same day. A good answer is based on how many hours similar work has actually taken before.
The call to the client. If a contract is running over, it needs to be raised before the overrun has happened. Before, the conversation sounds like this: "this phase is taking more than estimated, shall we look at it together". Afterwards it sounds like this: "the invoice is bigger than agreed". The first is project management, the second easily becomes a dispute.
The next quote. The only one of the four where a month's delay is fine. Historical data can be old as long as it is correct and recorded by work phase.
For three of the four decisions, month-old information arrives too late. Yet many small construction companies gather hours once a month because that is when payroll needs them. The payroll rhythm has ended up deciding what information the sites are managed with.
Example: what the difference between a week and a month costs
A detached house bathroom and kitchen renovation, budgeted at 400 working hours over two months. After demolition it turns out the floor structure under the bathroom is rotten, which was not in the quote. Repairing it and the slower progress add 40 hours to the contract, 30 of them directly from the floor structure.
Hours once a month. The overrun shows up in payroll a month later. By then the floor structure has been repaired, nobody recorded it as extra work, and the client has already paid the first instalment of the contract price. Justifying extra work after the fact is difficult, and the 30 hours often end up as the contractor's cost. With labour costing around 40 euros an hour including overheads, about 1,200 euros comes off the margin. About 1,650 euros goes uninvoiced at an hourly rate of 55 euros.
Hours every week. At the end of the first week, the supervisor sees that demolition and the floor structure have taken clearly more than estimated. The client is called the same week, shown photos of the rotten structure, and the repair is agreed as extra work before it is finished. The 30 hours are invoiced, and the client knows in advance that the invoice will grow.
The difference is not which figure is more precise. It is whether the information arrives in time to affect the decision. The shorter the contract, the more this matters.
Budget and actuals: both need to be fresh
Comparing budget with actuals only helps if the actuals are up to date. In practice they lag for two reasons. Hours arrive a week late if they are written up from memory on Friday. Purchases arrive with the supplier invoice, at worst a month later.
Together these make the figure misleading: the project looks under budget because some costs have not arrived yet, and decisions are made on a figure that will rise later. For hours, the fix is recording them on the day by phone. For purchases, it helps to record large orders against the project when they are placed rather than when the invoice arrives.
Approval improves or spoils the data
Approving hours feels like an administrative formality, but it is the only point where someone other than the person recording looks at the entries.
Done well, approval corrects hours booked to the wrong project while the worker still remembers what they did. It reveals deviations in the same week. And it tells the person recording that entries are actually looked at, which is the most effective way to improve their quality.
Done badly, approval is a button pressed once a month for all rows at once. It does not improve the data, but it gives the impression that the data has been checked. A good test is simple: if approval has never led to a single correction, it is not really being done.
For extra work, one more step works well: the client signs off on site. When the client confirms the extra hours the same day, there is nothing to discuss at invoicing time.
