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Labor Burden Explained: The True Cost of a Union Worker

A Journeyman Electrician's prevailing wage rate of $89/hr is not what hiring that worker costs you. By the time you add fringe benefits, payroll taxes, insurance, and tools, the real number is closer to $130–$145/hr. Understanding each component of labor burden is essential for accurate bidding and project financial control.

The Full Cost Stack

Labor cost in construction has three tiers. Each tier is mandatory — you cannot opt out of any of them on a prevailing wage project:

Tier 1 — Base Wage
$89.24/hr
Straight-time hourly rate paid to the worker
Tier 2 — Fringe Benefits
+ $48.50/hr
Annuity, pension, welfare, vacation, JIB, other fund contributions
Subtotal — Total Package (Prevailing Wage)
= $137.74/hr
What the wage schedule shows
Tier 3 — Payroll Burden & Insurance
+ $18–25/hr
FICA, FUTA, SUTA, workers' comp, general liability
Fully Burdened Rate
≈ $155–163/hr
True employer cost used for estimating and billing

Breaking Down Tier 3: Payroll Burden

The prevailing wage schedule covers Tiers 1 and 2. Tier 3 is the responsibility of the employer and varies by trade, experience rating, and insurance carrier. Here is each component explained:

FICA (Federal Insurance Contributions Act)

The employer matches the employee's FICA contribution: 6.2% for Social Security (on wages up to the annual wage base, $168,600 in 2025) plus 1.45% for Medicare (no cap). The employer share is 7.65% on base wages only — fringe benefit contributions are generally exempt from FICA.

FICA employer share ≈ 7.65% × base wage = $6.83/hr (at $89.24 base)

FUTA (Federal Unemployment Tax Act)

Employers pay 6.0% on the first $7,000 of each employee's wages, reduced to 0.6% net after the state unemployment tax credit. At 0.6% net, this is a relatively small number but must be accounted for.

FUTA net: 0.6% × $7,000 = $42/employee/year ≈ $0.02/hr (for a full-time worker)

SUTA (New York State Unemployment Insurance)

New York imposes state unemployment insurance on the first $12,500 of wages per employee (2025 taxable wage base). Rates range from 2.1% to 9.9% based on the employer's experience rating. Construction employers with high turnover typically carry higher rates.

SUTA at 4.0% × $12,500 = $500/employee/year ≈ $0.25/hr

Workers' Compensation Insurance

This is the largest variable in Tier 3. Workers' comp is priced per $100 of payroll and varies dramatically by NCCI class code (trade). In New York, electrical work (class 5190) runs roughly $9–$14 per $100 of payroll. Roofing (class 5551) can exceed $50. Mechanical insulation, ironwork, and demolition are similarly high-rate trades.

Important: Workers' comp is calculated on the full total package rate in New York (base + fringes), not just the base wage. This significantly increases your burden compared to non-prevailing wage projects.

General Liability Insurance

GL insurance for specialty contractors is typically priced as a percentage of payroll or as a per-project rate negotiated with the GC. Typical ranges: 2–4% of labor payroll for mechanical/electrical, 5–8% for demo/civil. Owner Controlled Insurance Programs (OCIP) or Contractor Controlled Insurance Programs (CCIP) may shift this cost to the project owner.

Small Tools Allowance

Many estimators include a small tools allowance of $1–$3/hr per worker to cover consumable tooling, PPE, and hand tools that are not reimbursed by the owner. This is not a statutory cost but is a real expense that belongs in the fully burdened rate.


Burden Rate by Trade: Illustrative Examples

TradeBaseBenefitsPackage+BurdenBurdened
Electrician$89.24$48.50$137.74~$20~$158
Plumber$91.38$52.30$143.68~$22~$166
Laborer$52.10$38.40$90.50~$28~$119
Ironworker$68.70$44.20$112.90~$32~$145
Carpenter$63.45$40.80$104.25~$18~$122

* Illustrative figures based on approximate NYC prevailing wage rates. Burden varies by carrier, experience rating, and project type. Use WageHound's Labor Burden Calculator for project-specific calculations.


OCIP / CCIP: When Burden Changes

On large projects (typically $50M+ construction value), owners or GCs often implement a controlled insurance program (OCIP/CCIP). Under these programs, the owner procures workers' comp and GL insurance for all enrolled contractors, eliminating those costs from the subcontractors' burden.

For prevailing wage projects with an OCIP/CCIP:

  • Subcontractors must exclude WC and GL from their bid — failing to do so is a common error that inflates bids artificially.
  • The “net burden rate” drops significantly — sometimes from 25% to 10–12% of payroll.
  • FICA and SUTA remain the contractor's responsibility and are not absorbed by an OCIP/CCIP.
  • Some programs also exclude sub-tier contractors or those performing off-site work — read the enrollment requirements carefully.

✓ Labor Burden Checklist

  • Start from the prevailing wage Total Package — not just the base rate.
  • Identify the correct NCCI class code(s) for each trade before calculating workers' comp.
  • Verify whether the project has an OCIP/CCIP — exclude enrolled coverages from your burden.
  • Apply FICA only to base wages (fringes are generally exempt).
  • Use your actual SUTA experience rate, not a generic estimate.
  • Add a small tools or consumables allowance as a line item.