How to Manage Payroll for Union and Non-Union Construction Crews

Construction contractors can manage union payroll and non-union payroll through the same overall payroll operation, but they cannot assume every worker or every hour follows the same rules.

Before calculating pay, identify the worker, job, classification, applicable collective bargaining agreement (CBA), wage rate, fringes, deductions, and overtime rules. Then check whether the work is covered by prevailing-wage or certified-payroll requirements.

For contractors trying to reduce the administrative work around payroll as well, see Workyard’s 8 ways contractors can reduce time spent managing payroll.

Workyard research: In Workyard’s internal labor-compliance research, prevailing-wage and certified-payroll needs appeared across 107 of 446 accounts, or 24.0%. This is a directional internal sample, not an estimate for the construction industry as a whole.

Union payroll vs. non-union payroll: what actually changes?

The biggest difference is the source of the payroll rules.

For workers covered by a collective bargaining agreement, the CBA can govern wages, hours, benefits and other terms of employment.

Workers outside the bargaining unit are not governed by that agreement, but they still remain subject to applicable federal, state and local wage-and-hour requirements. National Labor Relations Board

Public-work requirements form another layer. Davis-Bacon coverage depends on the contract and work, not simply whether the worker belongs to a union. U.S. Department of Labor

Payroll item	CBA-covered / union crew	Outside CBA / non-union crew	What payroll needs to check
Wage source	May be governed by a CBA plus applicable law	Employer rate plus applicable law	Worker, trade, job, classification and applicable agreement
Union dues	May apply under an authorized dues-checkoff or other applicable agreement	Generally not applicable outside the bargaining unit	Authorization, CBA and applicable law
Fringe benefits	May be required by the CBA	May come from employer benefit policies	Keep CBA fringes separate from prevailing-wage fringe requirements
Prevailing wage	Can apply on covered work	Can also apply on covered work	Contract coverage, wage determination and classification
Certified payroll	May be required on covered public work	May also be required on covered public work	Whether the project is subject to DBRA or another applicable requirement
Overtime	Applicable law plus potentially CBA premiums or rules	Applicable wage-and-hour rules	Actual workweek, rates worked and applicable agreement
Classification	CBA or trade rules may matter	Job duties and applicable wage rules matter	What work the worker actually performed
Federal payroll taxes	Normal employment-tax requirements still apply	Normal employment-tax requirements apply	Withholding, deposits, Form 941, W-2 and related records

Source note: CBA coverage can govern wages, hours, insurance and other mandatory bargaining subjects; Davis-Bacon requirements follow covered work; federal employment-tax rules continue to apply. See NLRB collective bargaining guidance, DOL Davis-Bacon guidance, and IRS Publication 15.

On DBRA-covered work, DOL also identifies certain union initiation-fee and membership-dues deductions as permissible without separate DOL approval when a collective bargaining agreement provides for them and other conditions are met. U.S. Department of Labor

Federal employment-tax obligations do not become a separate tax system because a worker is unionized. IRS Publication 15 covers employers’ federal income-tax withholding, Social Security and Medicare taxes, Form 941, and W-2 responsibilities. IRS Publication 15

How to manage mixed union and non-union payroll step by step

For mixed crews, map the rules before calculating pay. Each worker’s hours need to carry the job, classification, rate context and coverage that payroll needs downstream.

Illustrative example: a specialty electrical contractor has union electricians and non-union laborers. It is running a private commercial project and a federally funded project subject to Davis-Bacon labor standards.

Maria is a union electrician, Andre is a non-union laborer, and Sam is an electrician apprentice who changes classifications during part of the week.

1. Identify the rule set for each worker and job

Start by creating the payroll profile before calculating the check.

For each worker, identify union status, local and CBA where applicable, trade, worker classification, apprentice status, job, wage determination, rate, fringes, deductions, overtime or premium-pay rules, and certified-payroll coverage.

In the example, Maria may be subject to CBA terms on both jobs, but the Davis-Bacon requirements apply only to the covered public work. Andre is non-union, yet his hours on the covered project can still be subject to prevailing wage and certified-payroll rules.

Watch for: Treating “union” as shorthand for “prevailing wage.” Union status and project coverage are separate questions.

2. Assign the correct wage rate and classification

Rates should follow the work and the rule that applies to it.

On Davis-Bacon-covered work, the wage determination lists basic hourly and fringe-benefit rates by labor classification for the applicable geography and construction type. U.S. Department of Labor

If Sam performs work in more than one classification, DOL allows the contractor to pay the different applicable rates when it accurately tracks the actual hours in each classification.

If accurate classification-level time is not maintained, DOL says the highest applicable rate must be paid for all relevant hours. U.S. Department of Labor

3. Set deductions and fringe obligations

Separate CBA benefits, authorized union deductions, and prevailing-wage fringe obligations. They can interact, but they do not arise from the same source.

For Davis-Bacon work, contractors can generally satisfy the fringe portion through qualifying contributions to bona fide benefit plans, cash paid in lieu of fringe benefits, or a qualifying combination.

The current WH-347 separately records fringe-benefit credits and cash paid in lieu of fringes. U.S. Department of Labor WH-347

For Maria, the contractor needs to identify what the CBA requires and separately determine how the covered-job fringe obligation is satisfied.

4. Apply overtime, shift and agreement rules

One overtime rule may not fit the entire crew.

Under the FLSA, covered non-exempt workers generally receive overtime after 40 hours in a workweek.

When a worker has two or more established straight-time rates in the same week, the regular rate is generally calculated using a weighted average, subject to specified exceptions. U.S. Department of Labor Fact Sheet #23

A CBA may add premium-pay terms, but it cannot override applicable FLSA overtime and regular-rate requirements. U.S. Department of Labor Fact Sheet #56A

If Maria works across both jobs in the same workweek, payroll needs her total hours, the rates attached to those hours, and the applicable CBA and statutory overtime rules before calculating the final check.

Watch for: Reviewing public-job hours and private-job hours as if they were separate workweeks.

5. Track hours to the correct job and classification

Accurate construction payroll starts in the field. A time card that says only “40 hours” may not tell payroll enough. Clean job and worker classification data also supports apprenticeship reporting and multiple pay rates when those rules apply.

Maria’s week might include private-job hours and covered public-job hours, while Sam’s covered-job time may also need to be split by classification. That job and classification detail is what lets payroll apply the correct rates and reporting rules.

DOL requires actual hours by classification rather than estimates when a worker performs multiple classifications on covered work. U.S. Department of Labor

6. Check prevailing wage and certified payroll requirements

For each job, confirm whether certified payroll reporting is required.

For federal and federally assisted construction subject to DBRA, contractors and subcontractors must submit payroll information weekly.

Form WH-347 is provided for that purpose, although DOL says the form itself is optional if the contractor supplies the required information and Statement of Compliance another acceptable way. U.S. Department of Labor WH-347

On the example public project, Maria, Andre and Sam may all appear in the covered payroll reporting if they performed covered work. Andre’s non-union status does not remove the project-based reporting requirement.

For a deeper explanation, see Workyard’s prevailing wage guide and prevailing wage determination guide.

Watch for: Treating certified payroll as a union-only requirement.

7. Review exceptions before payroll closes

Before closing payroll, surface any exception that can change pay. Check job switches, classification or apprentice-status changes, time edits, missing cost codes, unexpected rates, fringe changes, deductions, overtime, covered hours, and missing approvals.

A 2026 U.S. study of government contracting and wage compliance found improved wage compliance among firms awarded government contracts and identified stronger internal controls as one mechanism associated with that relationship.

The study does not prescribe a construction payroll workflow, but it supports the value of review controls where government oversight applies. Government Contracting and Wage Compliance

Watch for: Letting payroll be the first place a wrong job, classification, rate or edit is discovered.

8. Send approved data to payroll and keep the supporting records

Once the contractor resolves the exceptions, approved field data can move into its payroll or accounting system. The field-time workflow should capture and organize the source data. The payroll system should calculate and process payroll using the applicable configuration.

For DBRA-covered work, contractors must preserve required payroll and related records for at least three years after completion of all work on the prime contract. U.S. Department of Labor

IRS rules operate on a different timetable: employers generally need to keep employment-tax records for at least four years. IRS employment tax recordkeeping

Union payroll, prevailing wage, and certified payroll are not the same thing

Union payroll, prevailing wage, and certified payroll are separate rule sets. Workyard internal research is directional and is not an industry-wide estimate.

	Union payroll	Prevailing wage	Certified payroll
What is it?	Payroll involving workers covered by a CBA or other union arrangements	Minimum wage and fringe requirements that apply to covered work	Required payroll information and certification for certain covered work
What triggers it?	Applicable labor agreement or bargaining relationship	Applicable law, funding and contract or project coverage	Applicable contract or reporting requirement
Does union membership trigger it by itself?	Union or CBA coverage is central	No	No
Can it affect non-union workers?	A CBA can cover bargaining-unit workers regardless of individual membership circumstances	Yes	Yes, when they perform covered work
Can the three overlap?	Yes	Yes	Yes

DOL gives a useful example: a listed Davis-Bacon bricklayer rate can be based on a union CBA even when the contractor is not party to that agreement. The listed prevailing rate still applies to the covered work. U.S. Department of Labor

Union payroll involves more than union wage rates. Payroll must separate CBA obligations from prevailing-wage, certified-payroll, and wage-and-hour requirements.

Worked example: one contractor, mixed crews, different rules

Using the same illustrative crew, one weekly payroll can contain several different rule sets.

Worker or activity	Payroll treatment to determine
Maria on the private job	Apply the applicable CBA and ordinary payroll requirements for the private work
Maria on the covered public job	Apply applicable CBA requirements and check the Davis-Bacon wage determination, classification and fringe obligation
Andre on the covered public job	Apply prevailing-wage requirements for his covered classification even though he is non-union
Sam changes classifications	Verify apprenticeship status and track actual hours by classification
All covered public-job work	Include required worker and pay information in the weekly certified payroll
All workers	Combine and calculate overtime according to applicable federal and other requirements

DOL permits qualifying registered apprentices on DBRA projects to be paid the apprentice rate specified by the applicable registered program, subject to program requirements including applicable ratios. U.S. Department of Labor

If Maria works 18 hours on the private job and 26 hours on the covered public job in the same workweek, payroll cannot look at the 26 public-job hours in isolation when determining federal overtime.

The FLSA operates on the workweek, and different rates can require a weighted-average regular-rate calculation unless an applicable exception is satisfied. U.S. Department of Labor Fact Sheet #23

What to check before closing mixed-crew payroll

• Bargaining-unit and CBA coverage is current, with union status recorded where relevant
• The correct union local and CBA are attached where applicable
• Trade and classification match the work performed
• Apprentice status and applicable program information are current
• Every hour is assigned to the correct job
• Required cost codes are present
• Covered jobs use the correct wage determination
• Pay rates match the applicable rules
• CBA benefits and prevailing-wage fringes have been treated separately and correctly
• Union dues and other deductions are authorized and correctly configured
• Hours across jobs and classifications have been included in overtime review
• Covered and non-covered hours are separated
• Certified payroll requirements have been identified
• Time-card changes have been reviewed
• Supervisors have completed required approvals
• Payroll and supporting records can be traced back to the underlying time and job data

Use the checklist to catch the fields that can change what the worker is owed or what the contractor must report.

How to keep mixed-crew payroll data clean before payroll closes

The office cannot apply a rate it cannot identify. That makes the field record the starting point for reliable union payroll reporting and mixed-crew payroll.

Workyard can support this workflow by capturing and organizing field data before it reaches payroll. Workers can record time against projects and cost codes.

Managers can review and approve time cards, and current Workyard pay settings support worker-level pay rates and overtime rules. Workyard Help Center Time-card approvals Pay & OT settings

Workyard also supports Rule Groups, which can apply different time-clock settings to groups such as union workers. Workyard Help Center

Approved time can move to supported payroll and accounting systems. Admins and managers can choose a date range and select specific team members when exporting hours. Workyard changelog

Workyard is a Construction Operations Platform, not a payroll processor. It helps contractors capture, correct, and organize the field data payroll depends on. Approved information can then move downstream. About Workyard

For contractors comparing downstream workflows, see construction time tracking software with payroll integration. Contractors specifically evaluating reporting tools can also see certified payroll software for construction.

Common mixed-crew payroll mistakes

Treating union status as prevailing-wage coverage

A union worker is not automatically on a prevailing-wage job, and a non-union worker is not automatically outside prevailing-wage requirements. Check the project and applicable law or contract.

Using one rate after a worker changes jobs or classifications

Hours need enough detail to show which work was performed at which rate. This is particularly important on Davis-Bacon work because DOL requires accurate classification-level time when different classifications carry different rates. U.S. Department of Labor

Mixing CBA fringes with prevailing-wage fringes

They can interact, but they do not arise from the same source. Determine the CBA obligation and the applicable prevailing-wage obligation separately, then determine which qualifying benefits can be credited.

Sending hours to payroll without job or classification data

A total-hours figure can force the office to reconstruct what happened after the fact. Capture the information while the job is being performed.

Treating certified payroll as a union-only requirement

Certified payroll under DBRA follows covered work. Union and non-union laborers and mechanics performing covered work can both be reportable. U.S. Department of Labor WH-347

Closing payroll before edits and approvals are reviewed

A changed time card can affect the job, cost code, classification, rate and overtime calculation. Resolve those exceptions before the final payroll handoff.

Key Takeaways

• Mixed-crew payroll works when the rule source follows the hour: worker and CBA coverage, job, classification, rate, fringes, overtime and any prevailing-wage or certified-payroll requirement.
• Capture that context in the field, review exceptions before payroll closes, then send approved data downstream and keep the records that support the final pay calculation.