The lab sets your price weeks after you already billed it
Nothing gets produced until the job mix formula is approved, and nothing is fully priced until the cores come back. In between, you're booking revenue at a number that isn't settled.
Most subs know their selling price the day the contract is signed. Paving has a selling price that a laboratory sets after the work is buried under the next lift, from samples taken out of mats nobody can touch anymore. That makes WIP on agency paving a forecast of a lab result, and carrying it at full value is how a strong June turns into a confusing August.
The size of it
A 95 to 97 percent pay factor on a $400,000 paving item is $12,000 to $20,000 of revenue that month-end WIP already booked as earned. It comes back out later with no offsetting cost entry, so the swing reads like the crews got worse.
On agency work you place tonnage at an unknown selling price and find out what it was worth weeks later. The plant can't produce a single ton for the project until the agency lab approves the job mix formula, and that clock belongs to the agency. After placement, acceptance runs on statistical pay factors by sublot: density cores, thickness, air voids, and ride smoothness, with deductions or bonuses applied once the reports come back. The progress estimate bills the placement at full contract value and adjusts later, so revenue and job cost go on the books at a price that's still open, sometimes straight across a month-end close.
Three moves, in order
Step 01: Job cost structure
Seven cost categories and three levels of granularity, built so the estimate and the ledger use the same words.
What else costs paving contractors money
The same mechanism in other trades
What paving owners ask
How to handle asphalt pay factor deductions on a WIP report?
Nothing gets produced until the job mix formula is approved, and nothing is fully priced until the cores come back. In between, you're booking revenue at a number that isn't settled.
What does it cost?
A 95 to 97 percent pay factor on a $400,000 paving item is $12,000 to $20,000 of revenue that month-end WIP already booked as earned. It comes back out later with no offsetting cost entry, so the swing reads like the crews got worse.
What do I do first?
Carry a pay factor reserve on every agency job in WIP, set from your own core and smoothness history, so the month-end number already assumes the lab.
What are paving contractors supposed to be making?
Paving runs 20% gross margin, 14% overhead and 6% net profit before taxes at $1M–$5M. The all-trade average is 7%, so this trade sits 1 points below it. The CFOS target is 10%.
Which part of the system fixes it?
The step is number 01, job cost structure. Seven cost categories and three levels of granularity, built so the estimate and the ledger use the same words. It comes from chapter 1 of CONTROL: The Construction Financial Operating System.
Josh Luebker ran commercial construction projects before he ran the numbers behind them, on data centres, military bases, hospitals, and high-rises. He wrote CONTROL: The Construction Financial Operating System, which is an eight-step framework for commercial subcontractors, and it publishes on October 1, 2026. He is a master electrician who moved into the office and kept the field vocabulary.
Sulphur Prairie Operations LLC maintains the benchmark reference behind these figures. Every edition is reconciled against the newest CFMA survey release before it publishes here. Where a figure changes between editions, the older edition keeps its year in the title so a citation to it stays correct.