HR and payroll for construction in the United States
Reviewed by Mellow Editorial Team, HR & payroll content team
Running payroll and HR for a construction business involves more complexity than most industries. You are managing a workforce that shifts between job sites, mixes employees with contractors, and falls under wage rules that go well beyond standard federal and state requirements.
The workforce classification problem
Construction relies heavily on both W-2 employees and 1099 contractors, and getting that line wrong is expensive. The IRS and the Department of Labor use behavioral control, financial control, and the nature of the relationship to determine worker status — not job title or what your contract says.
In construction specifically, misclassification is common and heavily audited. A carpenter who works exclusively for you, uses your tools, and follows your schedule is almost certainly an employee even if you call them a subcontractor. Misclassifying that worker means back payroll taxes, interest, penalties, and potential state-level liability on top.
Before you bring someone on as a 1099, run the actual classification tests, not just a gut check.
Prevailing wage and certified payroll
If you work on federally funded or federally assisted construction projects, the Davis-Bacon Act applies. It requires you to pay workers the prevailing wage and fringe benefits for their trade and locality — rates set by the Department of Labor that are often significantly above market minimums.
Many states have their own "Little Davis-Bacon" laws that apply the same logic to state-funded projects.
Compliance means:
- Paying the correct wage rate for each classification (laborer, electrician, ironworker, etc.)
- Tracking fringe benefits and ensuring they meet the required rate
- Submitting certified payroll reports, typically using Department of Labor Form WH-347, on a weekly basis to the contracting agency
Certified payroll is its own administrative process. Each week you must certify that every worker was paid correctly, with name, classification, hours, gross wages, deductions, and net pay recorded. Errors or late submissions can result in project suspension or debarment from future federal contracts.
Multi-state and job-site payroll
Construction workers often cross state lines. When that happens, you generally need to withhold income tax in the state where work is performed, not just where your company is based or where the worker lives. Some states have reciprocity agreements that simplify this, but most do not.
Practically, that means:
- Registering as an employer in each state where your workers are physically on site
- Applying the correct state and local tax rates for each jurisdiction
- Tracking hours by state if a single employee works in multiple states during a pay period
Certain cities and counties also impose local income taxes — Philadelphia, New York City, and several Ohio municipalities are examples. These stack on top of state obligations.
For federal payroll taxes, the mechanics are the same regardless of where workers are located. You withhold federal income tax based on each employee's Form W-4, plus FICA: Social Security at 6.2% up to the annual wage base and Medicare at 1.45% with no cap. You match both as the employer. High earners also trigger the 0.9% Additional Medicare surcharge on the employee side, which you withhold but do not match. See how Mellow runs payroll across six countries for context on managing multi-jurisdiction complexity at scale.
Overtime and hours tracking
The Fair Labor Standards Act requires overtime at 1.5x the regular rate for hours over 40 in a workweek for covered non-exempt employees. Most construction workers are non-exempt, so this applies broadly.
The challenge in construction is accurate time tracking across job sites. Paper timesheets are common but create audit risk. If the DOL investigates and your records are incomplete or inconsistent, the assumption defaults in the worker's favor. Digital time tracking tied to job site or GPS location is increasingly standard and worth the overhead cost given the exposure.
Some states, including California, also require daily overtime — meaning overtime kicks in after 8 hours in a day, not just after 40 hours in a week. California additionally prohibits most non-compete clauses, which matters if you operate there and want to protect trade relationships or project methodologies.
Safety obligations and their HR intersection
OSHA compliance is not purely an operations issue — it directly intersects with HR. Construction is one of the highest-risk industries for OSHA enforcement. Recordkeeping requirements under OSHA 300 logs apply to most employers, and incidents must be recorded and reported correctly.
From an HR standpoint, this means:
- Maintaining current OSHA 300 and 300A logs
- Ensuring required training is documented (fall protection, scaffold safety, hazard communication, and others depending on your scope)
- Having a clear written process for reporting injuries — one that workers know and trust, and that does not discourage reporting
Anti-retaliation rules under OSHA Section 11(c) prohibit disciplining workers for reporting safety concerns or injuries. A policy that even implicitly discourages incident reports creates legal exposure beyond OSHA itself.
Year-end reporting
Construction employers follow standard federal reporting deadlines. Form W-2 goes to employees and the Social Security Administration by January 31. Form 941 is filed quarterly. If you use subcontractors and pay them $600 or more during the year, 1099-NEC forms are due by the same January 31 deadline.
Given how many construction businesses use a mix of employees and 1099 contractors, the volume of 1099s at year-end can be substantial. Keep contractor payment records current throughout the year rather than reconstructing them in January.
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