(650) 332-8623How to Track Your Labor Costs by Job in Real Time
Most contractors know how to estimate labor costs. Few know what a job actually cost while it’s still running. This guide covers how GPS timesheets, cost codes, and real-time job costing software close that gap before the invoice goes out.
Quick Answer
- Set up the job in Workyard with the same cost codes you used in your estimate — framing, rough-in, deck installation, punch list.
- Workers clock in on the Workyard app and select the job and cost code. GPS verifies their location at that moment.
- Labor cost accumulates by cost code in real time with every punch — regular hours, overtime, and double time split by code.
- Pull the job costing report at any point during the job. Actual cost by code, filterable by date range, available before the job closes.
- Compare to your estimate yourself — Workyard shows you the actual cost data. The comparison to your budgeted hours is manual.
- Export to payroll at week end — no re-entry, no manual step between the field and the payroll run.
Real-time labor cost tracking lets you catch overruns while you can still act: adjusting crew hours, re-sequencing phases, or pushing back on scope creep before it quietly kills your profit on a job you thought you had locked in.
Most contractors can estimate labor. Fewer know what they actually spent. The gap between the two is where margins disappear, and construction expense management software is built to close it. Here’s how the best contractors are doing it now.
Why your labor estimate and your actual labor cost are two different numbers
The gap isn’t a math error. It’s a data collection failure. Hours get blanket-assigned on paper without field verification, admins retype them into payroll by hand, and by the time numbers reach construction accounting, the real figures have been replaced with approximations. Direct labor cost (e.g., the actual dollars paid to workers on a specific job) should be the easiest number to track. In practice, it’s where the data breaks down first.
According to Workyard’s analysis of 280 contractor discovery calls, 45% of construction businesses are still manually re-entering time data into payroll or accounting software, making double-entry one of the leading causes of job costing errors in the trades [Workyard, 2024].
April Callaway, Administrative Assistant to the CEO at AV Decking (a commercial steel decking subcontractor running 65–120 field workers across 25–40 job sites nationwide), ran the numbers on exactly this. Before switching to GPS time tracking, AV Decking’s project managers were doing what a lot of PMs do: blanket-assigning 10 hours per day to everyone on paper, without any field verification.
Callaway calculated that if each worker’s timecard was off by just 30 minutes per day, the resulting payroll loss added up to roughly $47,000 per week across the full crew.
“We estimated time cards could be off by 30 minutes daily for every employee… it came pretty close to $47,000 in payroll loss a week. That’s just for 30 minutes.”
— April Callaway, Administrative Assistant to the CEO, AV Decking
This is why calculating a labor estimate isn’t enough. You have to track it in real time.
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What ‘real-rime labor cost tracking’ actually means (and what it doesn’t)
Real-time labor cost tracking means a crew member taps clock-in, selects their job and cost code, and that punch shows up in your job cost report by code within seconds. The data is live the moment it’s created: what each cost code has spent so far, compared to your estimate, while the job is still running.
Most contractors think they’re doing this. What they’re actually doing is recording hours and converting them after the fact. That’s retroactive job costing. By the time you see a cost overrun in either the honor system or a spreadsheet workflow, the labor is already spent.
Here’s what each approach looks like in practice:
Retroactive Job Costing | Real-Time Labor Cost Tracking | |
When data is entered | End of week or end of job | At clock-in |
How hours are assigned | Manually by PM or foreman | Automatically via GPS + cost code |
Cost visibility by code | End-of-week summary at best | Live dollar cost by code, updated each punch |
Data accuracy | Depends on memory | GPS-verified at moment of punch |
Ability to course-correct | None — cost is already locked | Yes — while there’s still margin |
The honor system and the spreadsheet system both produce retroactive numbers. By the time you see a cost overrun in either workflow, the labor is already spent.
Labor allocation, such as assigning hours to specific jobs and phases at the moment work happens, is what separates a live job cost system from a post-job report. And without live allocation, estimate vs actuals comparison is something you do after the damage, not before it.
How cost codes turn time tracking into job costing data
Cost codes are what let you compare actual hours to your estimate by phase. Without them, you just know you went over. With them, you can see exactly which phase cost you, and when.
Time tracking tells you how many hours a worker clocked. Cost codes tell you where those hours went. A job cost report might show 680 hours logged on a commercial framing job, but without cost codes you won’t know how many went to structural steel vs. deck installation vs. site prep.
In construction labor cost tracking, codes typically map to phases: framing, concrete, electrical rough-in, finish work, punch list. Every company’s structure is different (a roofing sub codes differently than a mechanical contractor), but the logic is the same. Hours without a code are hours you can’t allocate. Unallocated hours produce job cost reports that aren’t useful to anyone.
Why cost code assignment fails in most workflows
Cost code assignment is where most workflows break. When a foreman fills in timecards at the end of the week, he’s assigning cost codes from memory. He codes things to the wrong phase. He guesses on split days. The result is a job cost report full of miscoded hours where framing looks on budget and electrical looks 40% over. The real story is that framing hours got miscoded into electrical.
Getting cost codes right at clock-in fixes this. When a worker tags their punch to a cost code the moment they start work, the data is accurate because it was captured at the moment of truth, not reconstructed days later.
For how to structure your own code system, read our guides on construction cost codes and how to calculate job costs.
Once cost code data is clean, it actually changes decisions. Synaptic Solar (a residential solar contractor based in Texas, managing 100+ jobs a week with 80 workers) is a good example. After implementing Workyard’s job costing, the ripple effect went all the way to accounting.
“Our accounting department has been able to break down all of that information and give us more realistic numbers with regards to what we need to focus on to avoid any additional losses, which in turn is turning into better processes and it’s also preventing us from losing more in each project, saving us money.”
— Victor Rodriguez, HR Field Manager, Synaptic Solar
That’s what clean real-time job costing data actually does. Not reports. Decisions.
How GPS timesheets feed into job costing, and why EOD entry doesn’t
GPS timesheets produce more accurate job cost data because they capture the actual moment, not what a worker remembers at 4:30pm. A worker crosses the geofence at the jobsite, the phone prompts a clock-in, and Workyard attaches GPS coordinates to that punch, ties it to the selected cost code, and records it against the job. That data is objective and doesn’t depend on memory.
End-of-day (EOD) entry reconstructs time from memory, and memory is unreliable. Not because workers are dishonest. Time reconstruction is genuinely difficult, and it always rounds toward whatever number the worker believes they worked, not what actually happened. Lunch that ran 45 minutes gets called 30. The 7:15am start gets called 7:00.
This is what eliminates the blanket-10-hours-for-everyone situation AV Decking was dealing with. You can’t assign 10 hours on paper to a crew member who GPS shows clocking in at 7:10am and out at 4:05pm.
End-of-day entry also compounds overtime problems. When hours are entered retrospectively, overtime approval becomes a negotiation.
Construction labor tracking with GPS catches overtime accumulating in real time. A supervisor sees it building and can approve or flag exceptions while the worker is still on site, before the overtime is guaranteed.
The overtime cost impact is real: a single worker hitting unexpected OT three times a week adds up fast across a large crew, and you won’t see it until around the end of week if you’re relying on end-of-day entry. Field time tracking through a mobile time clock app is the only way to surface that cost while there’s still a decision to make.
Off-site punches get flagged automatically too, because the GPS coordinates don’t match the geofenced job boundary. The data quality is built into the clock-in workflow, not bolted on after the fact.
One limitation worth knowing: GPS accuracy drops inside metal-roofed buildings and enclosed steel structures, and geofence radius can drift by 100 feet or more. If your crews work indoors for full shifts, the geofence becomes unreliable.
For those jobs, manual supervisor approval is the right fallback. Don’t rely on the geofence as the sole verification method.
What to look for in construction job costing software
Field-ready construction job costing software has four qualities office-built tools don’t: mobile GPS clock-in on any smartphone, cost code assignment at punch-in by the worker, live cost by code that updates with every punch, and direct payroll integration without re-entry.
Most job costing software for construction fails in the field because it was built for the office. The top-ranking roundups list FoundationSoft, HCSS, Sage, Knowify, and Xero, but none of them explain why those tools break down when you have 40 workers across 8 job sites. They work when the field is close and the crew is small. They break down when your PM is supposed to be managing scope, not chasing time data.
The best construction job costing software also surfaces labor variance, like the gap between what you estimated and what you’re actually spending, while there’s still time to act. It shows project burn rate by cost code, so you can see which phases are consuming labor faster than planned before they blow the job budget.
Construction accounting software with job costing built in (rather than bolted on) handles this natively (e.g., field data and cost reporting live in the same system).
Here’s how office-built and field-ready tools compare:
Feature | Office-Built Tools | Field-Ready Tools (Workyard) |
Clock-in method | Kiosk, web, or manual entry | Mobile GPS app — any smartphone |
Cost code assignment | Re-entered after the fact | Assigned at punch-in by worker |
Cost by code | Available after the week closes | Live — updates with every punch |
Payroll sync | Manual re-entry required | Direct integration — no re-entry |
That last one matters more than most contractors realize. If field hours go into a time tracking app and payroll runs through QuickBooks, and someone has to retype the numbers from one to the other, that manual step is where job costing errors enter your data.
A direct QuickBooks time tracking integration eliminates the re-entry step entirely and keeps your job cost numbers and payroll numbers in sync. QuickBooks job costing is only as accurate as the time data feeding it, which is why the clock-in workflow matters more than the accounting software itself.
How Workyard tracks labor costs by job in real time
The end result is actual labor cost accumulating by cost code in real time, broken down by regular hours, overtime, and double time per phase, filterable by date range, available while the job is still running. Setup takes about five minutes and follows the same phase structure used in the estimate.
Setup starts by creating the job in Workyard with the same phases from the estimate: framing, structural steel, deck installation, punch list. Each phase gets a cost code. Once the job is live, the crew gets assigned to it.
When workers clock in through the Workyard app, they select the job and cost code for whatever they’re working on that day. Workyard records the GPS location at that moment. If a punch comes in from outside the geofenced boundary, the foreman or supervisor gets flagged — and can approve it or investigate before it hits payroll.
From there, the Workyard job costing report shows actual labor cost accumulating by cost code: what each phase has cost so far in regular hours, what’s running in overtime, and the total dollar figure per code. You can filter by date range, compare week over week, and see which codes are running heavy.
Workyard doesn’t have a built-in budget comparison screen, so you compare that data to your estimate yourself. But the cost by code is live, broken down exactly the way you estimated, and available before the job is done rather than after.
Hours export directly to payroll at the end of the week. No re-entry. The same data that drives the job cost report drives the payroll run.
What to get right before go-live
One of the most common setup mistakes: loading too many cost codes. Teams that go live with 34 codes in the dropdown find foremen picking the wrong ones simply because the right code is buried. Within a week, phases are miscoded. Paring the active list down to the 8–10 codes relevant to that specific job fixes the problem faster than any amount of training. Workyard works, but the setup has to match how foremen actually think on site — not how the accountant organized the master list.
On the labor burden side, Workyard works from the all-in labor rate (wage plus overhead and burden). That means when you compare actual cost to your estimate, you’re comparing apples to apples. Raw wages against a burdened estimate produces variance numbers that are wrong by design.
AV Decking ran this same switch. After full crew adoption of Workyard’s GPS time clock, they exceeded their projected annual savings of $150,000–$200,000 in the first six weeks.
“We’ve had at least a solid six weeks now with all of our guys fully on the app, and in six weeks, we actually over exceeded that $150,000 that we had originally estimated for an entire year.”
— April Callaway, Administrative Assistant to the CEO, AV Decking
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How to calculate labor cost before a job starts (2 methods)
Both methods (bottom-up estimating and unit pricing) tell you what a job should cost before it starts. Neither replaces real-time tracking while the job runs. But understanding them is what makes the tracking data meaningful when you compare actual to estimate.
Step 1: Build your base labor rate
Your base labor rate is simply what you pay workers per hour, nothing else. A crew of three might look like: Foreman at $40/hr, Concrete Pourer at $20/hr, Framer at $25/hr. Base rate for that crew: $85/hr. Base rate excludes overhead, benefits, and taxes. It’s the starting point, not the number you bid with.
Step 2: Add labor burden to get your all-in rate
Your labor burden is the indirect cost layer on top of base wages. It includes: FICA, FUTA, Medicare, Social Security, SUTA, general liability, workers’ compensation, and recruiting and training costs.
Overhead costs, such as tools, vehicles, yard, and admin time, are sometimes folded in depending on how your estimating system categorizes them. Labor burden runs about 25% of base wages on average, though it varies by state and trade.
Using the $85/hr crew example: $85 × 40 hours = $3,400/week base cost. Add 25% burden: $3,400 × 25% = $850. Total weekly cost: $4,250. That crew works 120 hours total per week (3 workers × 40 hrs), so your all-in labor rate is $4,250 ÷ 120 = $35.41/hr. That’s the number you build estimates from. Don’t forget overtime: overtime pay changes this calculation meaningfully for any crew working more than 40 hours.
Step 3: Apply your rate — pick the method that fits the job
Once you have your all-in rate, you need to apply it to a scope. That’s where the two methods differ — choose based on job type.
Method 1: Bottom-up estimating
Bottom-up breaks every job into phases, estimates hours per phase, and sums them. The formula: all-in rate × number of workers × number of weeks × 40 hours/week.
Example: $35.41 × 3 workers × 3 weeks × 40 hours = $12,747.60 for one phase. Repeat across every phase (framing, electrical, plumbing, drywall) and add the totals. Bottom-up is preferred by general contractors managing varied scopes because it can be updated as a job progresses. Its weakness: time-consuming upfront and vulnerable to forgetting overhead and “big picture” costs.
Method 2: Unit pricing
Unit pricing multiplies a known labor rate per unit of output by the job’s scope.
A drywaller who knows their crew installs 100 sq ft per hour at $50/hr can quote 1,000 sq ft instantly: 10 hours × $50 = $500. Build your unit price from historical jobs: separate actual labor cost from a completed project, divide by square footage, and add that figure to your estimating database.
Most contractors build in a 10% buffer to unit price estimates to cover losses and inefficiencies.
Both methods produce an estimate. Neither tracks how the job is actually performing.
Time and materials tracking (e.g., recording actual labor hours and costs against each phase as the job runs) is what connects your estimate to real field performance and makes construction margin protection possible. Without that live connection, you’re comparing a pre-job forecast to a post-job surprise.
For a full breakdown of how these numbers feed into complete job costs, see our guide on how to calculate job costs.
References
- Workyard. (2024). Customer Discovery Research: Pre-Sale Contractor Discovery Calls. Analysis of 280 pre-sale discovery calls with construction contractors. Internal dataset. Workyard, Inc.
- Lynch, E. (2025, January 20). Cost of Constructing a Home in 2024. National Association of Home Builders (NAHB) Special Studies. Retrieved from https://www.nahb.org/news-and-economics/housing-economics-plus/special-studies/special-studies-pages/cost-of-constructing-a-home-in-2024
- Potter, B. (2025, September). Labor Productivity in Construction. Aspen Institute, Institute for Progress. Retrieved from https://www.aspeninstitute.org/wp-content/uploads/2025/09/Potter_Construction_Productivity.pdf
Yes, though the mechanism is indirect. Prevailing wage compliance requires accurate records of hours worked by trade classification on covered projects. GPS time tracking with cost codes gives you verified hours by worker and phase, which is exactly what a prevailing wage audit asks for. Without accurate punch records, reconstructing classification hours after the fact is guesswork. Workyard doesn’t calculate prevailing wage rates, but the time records it produces are the input those calculations require.
For residential construction, the NAHB 2024 Construction Cost Survey found that construction costs represent 64.4% of the average home’s sales price [NAHB, 2024]. The Aspen Institute’s 2025 construction productivity report (Brian Potter, September 2025) cites NAHB data to note that roughly half of those construction costs come from labor. That puts residential labor at approximately 30–35% of total job cost [Aspen Institute, 2025]. A 10% labor overrun on a $1M project can cost $30,000–$50,000 in real margin.
Workyard shows actual labor cost accumulating by cost code in real time. I pull the job costing report filtered to the current week, see what each code has cost so far broken down by regular and overtime hours, and compare that against my estimate. Workyard doesn’t have a built-in budget comparison screen, so the comparison happens between the report and your estimate. But the actual cost data is live and by code, not a Friday summary.
The two most expensive: allowing retroactive time entry (workers fill in hours from memory, which skews toward over-reporting) and running job cost reports from miscoded hours (foreman assigns Friday’s hours to the wrong cost code, and the phase report is wrong from day one). A close third is comparing raw wages to a burdened estimate. Your estimated labor cost included overhead and burden, so your variance analysis has to use the same burdened figure on both sides.
QuickBooks has a job costing module, but its accuracy depends entirely on the quality of the time data coming in. If workers enter hours manually into QuickBooks Time, you get the same end-of-day reconstruction problem as paper timesheets. A better workflow is using a field-first GPS time tracking app for clock-in and cost code assignment, then syncing those hours to QuickBooks via a direct QuickBooks time tracking integration. The job cost reports in QuickBooks are only as accurate as the time data feeding them.
Start with data quality, not field performance. Variance from miscoded hours, retroactive time entry, or double-entry errors has nothing to do with how hard your crew worked. It’s a collection problem. Fixing the workflow (GPS clock-in, cost code at punch, direct payroll export) removes that noise first. Once your actual labor numbers are clean, remaining variance reflects real field performance: pace, productivity, crew composition. At that point, you’re making decisions based on real numbers.
