On data center construction programs, accurate payroll and WIP reporting depend on the same labor data, but that information may reach payroll and project job cost on different schedules. When craft labor costs are posted to project job cost two weeks after the underlying work is performed, a WIP review held during that interval uses an incomplete actual-cost balance. That does not necessarily mean payroll is wrong – employees may have been paid accurately and on time; the reporting problem is that approved craft hours, wage rates, payroll taxes, and labor burdens are not yet reflected in project job cost.
For a data center general contractor firm that self-performs mechanical, electrical, and plumbing (MEP) work, delayed labor postings may cause finance to calculate WIP using a current estimate at completion but an incomplete actual-cost balance. On a large construction program, that timing gap can affect percent complete, projected margin, and overbilling or underbilling. For a $4 billion program, a one-percentage-point WIP error can shift recognized revenue and the reported WIP position by $40 million. This is a reporting effect—not a cost overrun or realized loss.
Scarce Craft Labor Raises the Cost of Stale Information
Craft labor scarcity makes this timing problem more consequential. DPR Construction’s Q4 2024 Market Conditions Report noted that approximately 77% of contractors reported greater difficulty filling craft positions in 2024 than in 2023. Because electricians and HVAC specialists are central to data center MEP work, contractors may have to absorb overtime costs, travel pay, or higher wage rates to secure and retain those workers.
In this environment, delayed labor postings make forecasting from incomplete cost data even riskier. If an electrical crew works more overtime than planned or a mechanical crew is resequenced around an equipment delay, the cost variance begins in the field. Finance may not see the full cost until the crew’s time has been approved, payroll has been processed, and the resulting labor cost has been posted to the proper project and cost code. By then, a project manager may already have updated the remaining labor forecast using an incomplete actual-cost balance. Schedule changes and commitments create one type of WIP risk for data center MEP contractors. Delayed labor-cost postings create another: the work has already been performed, but its cost is not yet reflected in WIP.
Accurate Payroll Does Not Guarantee Accurate WIP
A crew completes work at month-end. Supervisors review the crew’s time a few days later. Payroll is processed the following week, and a summarized journal entry may not reach the general ledger or job-cost system until later. Those steps may be routine, but the construction WIP report can still rely on incomplete project-level labor costs. A Controller needs to know more than the company’s total payroll expense. Each employee’s labor cost must be assigned to the correct project, phase, cost code, locality, union, and job type, along with the applicable labor burden. Without that detail, project managers may see an unfavorable variance without being able to determine whether it came from additional hours, a rate change, overtime, fringe benefits, or incorrect coding.
If actual labor is understated or classified incorrectly, the remaining-cost forecast may be based on a distorted view of labor productivity. Margin fade can appear later even though the labor variance was already developing.
Union and Multi-State Work Magnify the Reconciliation Burden
Maintaining that level of project detail becomes harder when craft workers take assignments across multiple states, union locals, projects, and job types. Each assignment can change the wage rate, local tax treatment, fringe-benefit requirements, workers’ compensation classification, and employer obligations. Public work can add prevailing-wage and certified-payroll requirements. When payroll and accounting systems require separate updates or rate tables are maintained in spreadsheets, a single change can create several reconciliation points. An outdated union rate may produce a payroll correction. A missing fringe can understate the project’s labor burden. Incorrect locality data can affect tax deductions. If the correction is made in payroll but does not flow to job cost, the payroll and project job-cost records will not reconcile.
Certified payroll adds another reconciliation requirement. The U.S. Department of Labor provides Form WH-347 for contractors and subcontractors submitting weekly certified payroll reports for federal or federally assisted construction covered by prevailing-wage requirements. To support that filing, project-level hours, classifications, rates, deductions, and fringes must be accurate and reconcile with payroll and job cost. Pulling payroll figures from one system and job-cost figures from another increases preparation time and makes discrepancies harder to explain during an audit.
Connect Construction Payroll to Job Cost
Regardless of how time is collected, project-level labor detail must be preserved as approved time moves through payroll processing and into job-cost posting. Finance needs this information to reconcile payroll with the general ledger, project job cost, WIP, and certified payroll reports.
With Sage Intacct Construction Payroll, approved time can flow automatically into payroll through open APIs that connect with a contractor’s preferred time-tracking solution, reducing manual entry and the risk of related errors. After payroll is processed, the application creates journal entries containing the dimensions and costing details needed for project and labor reporting. Finance can then post those entries to the Sage Intacct general ledger with a single action. More current job-cost information helps project teams identify emerging labor overruns sooner and improve remaining-cost forecasts.
Import templates simplify updates to union and locality rate tables, while effective dating ensures that new rates are applied on the correct dates. Sage Intacct Construction Payroll supports payroll for union and non-union employees across public and private projects, multiple states, union locals, and job types. It also automates applicable deductions and fringe calculations, including workers’ compensation, 401(k) contributions, and employer matching contributions.
The application supports certified payroll reporting across all U.S. states and territories. A guided process walks users through data selection and generates reports for printed submission or electronic filing. Built-in audit trails capture every transaction and allow finance to trace companywide totals down to the individual cost components of each labor hour. When a correction is made, the updated information flows through the system automatically.
Together, these capabilities reduce the administrative work involved in processing complex construction payrolls and shorten the time between payroll processing and complete job-cost reporting, but they do not eliminate the need for cutoff procedures. Time still must be approved, and payroll still must be processed. Finance should continue reconciling payroll with the general ledger, project job cost, and certified payroll reports at period-end.
Questions to Ask Before the Next WIP Review
Before the next WIP review, finance and operations should trace one payroll cycle from approved time through posting to project job cost. Start with these questions:
- Posting lag: How many days elapse between the date work is performed and the date its labor cost is posted at the project level?
- Cost detail: Does each time entry retain the project, phase, cost code, locality, union, and job-type detail needed for WIP and productivity analysis?
- Labor burden: Are fringes, payroll taxes, workers’ compensation, and employer contributions reflected consistently in actual labor cost and the estimate at completion?
- Rate control: Can the team apply effective-dated rate changes without separately updating multiple spreadsheets or systems?
- Reconciliation: Can payroll, the general ledger, job cost, and certified payroll reporting be traced to the same underlying time and rate data?
- Corrections: When an error is fixed, does the correction reach every affected report, or must finance update each system separately?
Keep Craft Labor Costs Current for WIP Reporting
The timing of labor-cost posting can affect WIP on projects of any size. Billion-dollar contract values simply magnify the reporting effect. An accurate paycheck is essential, but it is only one measure of construction payroll accuracy. For the Controller, CFO, and COO, the broader question is whether labor cost is posted promptly and completely, with enough project detail to update the forecast. Finance needs current, project-level labor cost to evaluate productivity, remaining cost, and margin while there is still time to act. Contact SWK Technologies to discuss how Sage Intacct Construction Payroll can connect payroll to project job cost to improve construction payroll accuracy and WIP reporting.