What is a wage classification under Davis-Bacon?

A wage classification (or trade classification) is a specific job title listed in a wage determination with an associated minimum wage and fringe rate — for example, Electrician, Carpenter, or Ironworker. Workers must be paid at least the rate for the classification that matches the work they perform.

What happens if I misclassify a worker?

Misclassifying a worker at a lower-paying classification than the work actually performed triggers back-wage liability for the difference. The DOL Wage and Hour Division can audit records and issue back-wage orders. Repeated misclassification can lead to debarment from federal contracting.

Can one worker have multiple classifications?

Yes, in some cases. If a worker performs work in two different trade classifications on the same day, they must be paid the applicable rate for each classification for the hours worked in that classification. Some wage determinations have helper or apprentice provisions that allow lower rates for defined support tasks.

Is there a helper classification under Davis-Bacon?

Helper classifications are only valid if they appear explicitly in the applicable wage determination. You cannot create a "helper" rate for a classification where the wage determination does not list one. Always check the actual determination before assigning a helper rate.

Prevailing Wage Classifier | Free Davis-Bacon Classification Tool

The Prevailing Wage Classifier helps subcontractors identify the correct Davis-Bacon wage classification for specific work tasks. It reduces misclassification risk on federally funded public construction projects by matching work descriptions to trade classifications.

Classify Your Work

Describe the Work

Enter a short description of the work being performed (e.g., 'install ductwork and air handling units')

Known Trade (optional)

Select your trade if already known — overrides the description search

Enter a work description or select a trade above to see classification suggestions.

Official Classification Resources

SAM.gov Wage Determinations →DOL Wage and Hour Division →WDOL.gov →

Contractors on prevailing wage projects must submit weekly certified payroll reports (WH-347) listing all workers, their classifications, hours, and wages paid.

Example

A plumbing contractor is bidding a federal project and needs to classify workers installing HVAC hydronic piping.

Work description"install hydronic piping for chilled water system"

Auto-detected codesPIPP (Pipefitter/Steamfitter) — top match

Potential conflictPLUM vs PIPP — domestic vs. process piping line

ClassificationPIPP — Pipefitter (process pipe)

How to Use This Tool

1Enter a description of the specific work tasks the worker performs (e.g., "installing conduit and pulling wire in a commercial building").
2Select the state where work is being performed.
3Review the most likely classification and any related classifications to consider.
4Cross-reference with your wage determination to confirm the rate for that classification.

How to Apply the Results

Use the identified classification to verify you are paying the correct rate from your wage determination. If the work spans multiple classifications, consult the wage determination for helper or dual-trade provisions and document your classification rationale in writing.

Frequently Asked Questions

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