Pennsylvania Prevailing Wage Rate Calculator
Calculate total prevailing wage costs for Pennsylvania public works projects per the Pennsylvania Prevailing Wage Act (Act 442 of 1961). Includes base wage, fringe benefits, overtime premiums, and total project labor costs.
Formula
Straight-Time Wages (per worker/week):
ST_Wage = Base_Rate × Regular_Hours
Overtime Wages (per worker/week):
OT_Wage = (Base_Rate × 1.5) × OT_Hours
Pennsylvania prevailing wage overtime applies the 1.5× multiplier to the base wage rate only.
Fringe Benefits (per worker/week):
Fringes = Fringe_Rate × (Regular_Hours + OT_Hours)
Fringe benefits are paid at straight-time rate for both regular and overtime hours.
Employer Payroll Tax (per worker/week):
Payroll_Tax = (ST_Wage + OT_Wage) × Employer_Payroll_Tax_Rate
Payroll taxes apply to wages only; bona fide fringe benefit contributions are exempt.
Total Employer Cost (per worker/week):
Total_Cost = ST_Wage + OT_Wage + Fringes + Payroll_Tax
Effective All-In Hourly Rate:
Effective_Rate = Total_Cost_Per_Week ÷ (Regular_Hours + OT_Hours)
Project Total:
Project_Total = Total_Cost_Per_Worker_Per_Week × Number_of_Workers × Weeks
Assumptions & References
- Governed by the Pennsylvania Prevailing Wage Act, Act 442 of 1961 (43 P.S. §§ 165-1 to 165-17), applicable to public works contracts exceeding $25,000.
- Overtime is defined as hours worked beyond 8 hours per day or 40 hours per week, whichever triggers first, paid at 1.5× the base wage rate.
- Fringe benefits (health insurance, pension, vacation, holiday, apprenticeship training) are paid at the straight-time rate for all hours including overtime.
- Wage rates vary by county, trade classification, and project type (building, heavy/highway, residential). Always obtain the official determination from the PA Department of Labor & Industry.
- Employer payroll taxes default to 7.65% (FICA: 6.2% Social Security + 1.45% Medicare). FUTA (0.6%) and PA SUTA (~3.68% for new employers) may be added as applicable.
- Bona fide fringe benefit contributions paid to third-party plans are not subject to FICA/FUTA per IRS rules; this calculator applies payroll taxes to wages only.
- Wage rates in the trade selector are illustrative regional averages for the Philadelphia/Pittsburgh metro area and do not substitute for official county-specific determinations.
- Reference: PA DLI Prevailing Wage Program | Act 442 Full Text
Pennsylvania's prevailing wage framework governs compensation on two parallel tracks: the federal Davis-Bacon Act applies to federally funded construction contracts, while the Pennsylvania Prevailing Wage Act (Act 442 of 1961) covers state-funded public works. The state threshold that triggers mandatory prevailing wages is $25,000 — any public construction, reconstruction, demolition, alteration, or repair contract at or above that figure must pay rates set by the Pennsylvania Secretary of Labor & Industry. Misclassifying a project as exempt or underpaying by even a fraction of the applicable rate exposes contractors to back-wage liability, debarment, and contract termination.
What This Calculator Computes
A Pennsylvania prevailing wage rate calculator takes project-specific inputs and returns the minimum total compensation obligation per worker per hour for each covered trade classification. The output is not the base wage alone — it is the total package rate, which includes the straight-time base wage, the fringe benefit credit or cash equivalent, and any applicable overtime premium, all expressed on a per-hour basis for a given county.
Required Inputs
1. Project Funding Source
The funding source determines which wage determination applies:
- State-funded only: Rates come from the Pennsylvania Department of Labor & Industry, published by county and trade classification.
- Federal funding involved: The applicable wage determination must be pulled from the SAM.gov wage determination database, maintained by the U.S. Department of Labor — Wage and Hour Division. When both funding streams apply, the higher of the two rates governs for each classification.
2. County
Pennsylvania has 67 counties. Prevailing wage rates differ substantially by county. A journeyman carpenter rate in Philadelphia County will differ from the rate in McKean County. The county where the physical work is performed — not the contractor's office location — controls the applicable rate.
3. Trade Classification
Workers must be classified by the specific craft or trade they perform. The Pennsylvania Prevailing Wage Act enumerates classifications including but not limited to: carpenters, electricians, ironworkers, laborers, operating engineers, painters, plumbers, and pipefitters. A single project may require 12 or more distinct wage determinations depending on scope.
4. Hours Worked
- Straight time: Hours up to 8 per day and 40 per week, depending on project-specific conditions.
- Overtime: Under 29 CFR regulations governing Davis-Bacon, overtime on federally covered contracts is triggered by the Contract Work Hours and Safety Standards Act (CWHSSA) at 40 hours per week, requiring time-and-one-half the basic rate of pay — fringe benefits are not doubled.
The Prevailing Wage Calculation Formula
The core formula for total minimum compensation per worker per pay period is:
Total Obligation = (Straight-Time Hours × Total Package Rate)
+ (OT Hours × 0.5 × Basic Hourly Rate)
Where:
Total Package Rate = Basic Hourly Rate + Fringe Benefit Rate
The fringe benefit rate can be satisfied in three ways, as detailed in WHD Fact Sheet #66:
- Bona fide plan payments: Employer contributions to a qualifying pension, health, vacation, or apprenticeship fund.
- Annualized cash equivalent: If no qualifying plan exists, the fringe amount must be paid as additional cash wages.
- Combination: A partial bona fide plan contribution plus a cash remainder to reach the full fringe obligation.
Critically, fringe benefit credit is calculated on a per-hour-worked basis, not per-hour-paid. An employer paying $8.75/hour into a health plan gets credit for $8.75 per hour actually worked — hours of paid leave do not generate additional fringe credit.
Sample Calculation
A concrete example using hypothetical rates illustrates the structure. Assume a state-funded project in Allegheny County classifies a worker as a journeyman electrician with:
- Basic hourly rate: $42.00
- Fringe benefit rate: $18.50
- Total package rate: $60.50
- Hours in the pay period: 48 (40 straight time + 8 overtime)
Calculation:
| Component | Hours | Rate | Amount |
|---|---|---|---|
| Straight-time total package | 40 | $60.50 | $2,420.00 |
| Overtime premium (½ basic rate) | 8 | $21.00 | $168.00 |
| Total minimum obligation | $2,588.00 |
The fringe benefit portion of the 8 overtime hours is already captured in the straight-time total package calculation — only the half-time premium on the basic rate is added for overtime.
Common Errors That Trigger Violations
Averaging wages across workers: The prevailing rate applies to each individual worker in each classification — averaging higher-paid workers against lower-paid workers to meet a blended rate is non-compliant.
Using the wrong county rate: Performing work in Chester County while applying Montgomery County rates because the difference is minor does not constitute compliance.
Misclassifying the funding source: State grants routed through a local municipality may still trigger federal Davis-Bacon coverage if the underlying appropriation carries federal dollars. Contractors must trace the funding source, not rely on the immediate contracting entity's characterization.
Ignoring apprentice ratios: Apprentices may be paid at reduced rates only if employed through a registered apprenticeship program and only at the ratio specified in the applicable wage determination (according to the Pennsylvania Department of Labor & Industry).
Where to Obtain Official Rate Determinations
- State projects: Pennsylvania Department of Labor & Industry, Prevailing Wage Division publishes current wage determinations searchable by county and classification.
- Federal projects: SAM.gov wage determinations, maintained by the U.S. Department of Labor, provides active General Wage Determinations and project-specific determinations by state and county.
- Regulatory authority: eCFR Title 29 contains the full federal regulatory text governing Davis-Bacon compliance, fringe benefit calculations, and enforcement procedures.
The Pennsylvania Independent Fiscal Office has published economic analyses examining prevailing wage's cost impact on public contracts, providing context for budget estimation on covered projects.
Frequently Asked Questions
Does the $25,000 threshold apply per contract or per project?
The $25,000 threshold under the Pennsylvania Prevailing Wage Act (Act 442 of 1961) applies per contract. A public body cannot split a single project into sub-$25,000 contracts to avoid coverage — that practice constitutes intentional evasion under the statute.
Are material suppliers covered under Pennsylvania prevailing wage rules?
Material suppliers who deliver goods to a job site but perform no on-site construction work are generally not covered. Workers who both deliver and install materials at the site are covered for the installation hours (according to the Pennsylvania Department of Labor & Industry).
Does overtime on a Davis-Bacon project double the fringe benefit amount?
No. Under WHD Fact Sheet #66, the overtime premium on federally covered contracts is one-half the basic rate only — the fringe benefit portion is not multiplied for overtime hours.
Can a general contractor rely on a subcontractor's certified payrolls to confirm prevailing wage compliance?
The general contractor bears joint liability for prevailing wage violations by subcontractors on covered projects (according to the U.S. Department of Labor, Wage and Hour Division). Certified payroll review is a compliance practice, but it does not transfer legal responsibility.