Margins + Leakage
Gross margin drift
When gross margin drops three months in a row, pricing, scope, labor, materials, or estimating is usually talking.
Executive lens
A useful brief turns the issue into a decision.
Trap
Trap
Explaining margin misses after the year is over.
Signal
Signal
Gross margin
Move
Move
Compare by month and job type
Rule
Rule
Margin drift is an operating signal, not just a finance metric.
Why it matters
Explaining margin misses after the year is over.
Stakes
Leakage rarely arrives as one dramatic failure. It arrives as small discounts, labor overruns, rework, vendor creep, stale pricing, and overhead that never gets reset.
Why it gets missed
The business stays busy, so the owner assumes the machine is working. Busy hides leakage until the month closes and there is less left than expected. In this case, the practical trap is simple: explaining margin misses after the year is over..
Field pattern
Follow the leak to the operating behavior that caused it. Pricing, scope, rework, collections, overtime, marketing quality, and recurring overhead each need a different fix.
Numbers to watch
The metric is useful only when it changes behavior.
Gross margin
Shows whether pricing, labor, materials, and scope are leaving enough room for overhead and owner profit.
Cogs pct
Shows whether direct costs are moving faster than the work they support.
Estimate accuracy
Shows whether estimating assumptions are holding up in completed work.
Operating moves
What to make visible before the next decision.
Move 01
Compare by month and job type
Move 02
Find which cost lane moved
Move 03
Change estimating or pricing rules
Owner questions
Use the brief in a real review.
1
If gross margin moved this week, what decision would change?
2
Which person, process, or rule owns compare by month and job type?
3
What would make this number untrustworthy right now?
4
If nothing changes for 90 days, what gets harder for the owner?
Interactive model
See the principle in numbers
More invoices
+50%
More payroll
+42%
More equipment pressure
+36%
More working capital
+48%
More management load
+45%
Reality check
A 50% sales goal is a 50% operating-system question.
Before chasing the number, decide what has to change.
JGC Hub watches the controllable lanes early enough for the owner to change pricing, scope, staffing, or spend.
Keep reading
Related guides
Start with the system
Make this visible in the operating rhythm.
The brief explains the idea. JGC Hub gives you the categories, rules, and review cadence to keep it from drifting.