🏗️ Union Locals & Wage Rates
A union local is a chapter of a craft union representing workers in a specific geographic area and trade. "Carpenters Local 22 — San Francisco Bay Area" covers a different territory than "Carpenters Local 405 — San Mateo/Marin Counties," and they have different CBA-negotiated rates.
When a union local is set up in your payroll system, you're capturing: the trade, the jurisdiction, the effective date range (CBAs expire and get renegotiated), and the full package rate broken down into base wage plus each fringe line item.
Anatomy of a union local rate
What makes up the total package rate for one worker classification.
The base wage is the taxable cash amount paid to the worker. Fringe contributions go to trust funds administered by the union — not to the worker directly. The total package rate is what the employer actually pays per hour of work.
Wage classifications within a local
Each local has multiple classifications — all with different rates.
Apprentice periods
Apprentice rates advance by period, typically every 6 months or 1,000 hours of work:
| Period | Typical % of journeyman | Example at $52/hr base |
|---|---|---|
| 1st | 50–60% | $26.00–$31.20 |
| 2nd | 55–65% | $28.60–$33.80 |
| 3rd | 60–70% | $31.20–$36.40 |
| 4th | 65–75% | $33.80–$39.00 |
| 5th | 70–80% | $36.40–$41.60 |
| 6th | 75–85% | $39.00–$44.20 |
| 7th | 80–90% | $41.60–$46.80 |
| 8th | 85–95% | $44.20–$49.40 |
The exact percentages and number of periods vary by trade. Some trades have 4 periods, others have 8 or 10.
Geographic scope
Each local covers a specific jurisdiction — rates differ between locals for the same trade. A carpenter in the SF Bay Area may have a different total package rate than a carpenter in Northern California's interior counties, even though they belong to the same parent union (UBC).
| Factor | How it affects rates |
|---|---|
| Cost of living | Higher-cost areas generally have higher base wages |
| Market conditions | Competitive labor markets push rates up |
| Local negotiation | Each local negotiates its own CBA with the contractor association |
| Trust fund costs | H&W costs vary by the plan's demographics and provider contracts |
Rates change when a new CBA takes effect — typically every 3–5 years with annual adjustments. The union allocates each year's increase between base wage and fringe funds. You need to update rates in your payroll system when the new allocation takes effect, and track which rate schedule was in effect for each pay period.
How fringe payments work
Fringes can be paid three ways, each with different cost implications:
| Method | How it works | Tax impact |
|---|---|---|
| Trust fund contributions | Pay fringe amounts directly to qualifying benefit plans | Lower — not subject to FICA, FUTA, workers' comp |
| Cash in lieu | Add fringe amount to the worker's hourly cash wage | Higher — full payroll taxes on the fringe amount |
| Combination | Pay some to plans, remaining shortfall as cash | Mixed — saves on the portion paid to plans |
On a $52/hr base wage with $31/hr in fringes, the payroll tax difference between paying fringes as cash vs. to trust funds is roughly $10/hr per worker in savings (FICA + workers' comp + GL). On a 10-person crew, that's $100/hr.
For the full breakdown of fringe payment methods, tax implications, and trust fund reporting requirements, see the Fringe Benefits in Construction guide.
Apprentice-to-journeyman ratios
Most union CBAs and state prevailing wage programs mandate a maximum ratio of apprentices to journeymen. Violating ratios triggers grievances (union) or penalties (prevailing wage).
| Trade | Typical ratio | Notes |
|---|---|---|
| Carpenter | 1 apprentice per 5 journeymen | Varies by local |
| Electrician (IBEW) | 1 per 3–5 journeymen | Stricter in most locals |
| Plumber (UA) | 1 per 3–5 journeymen | Varies by agreement |
| Laborer (LIUNA) | 1 per 5 journeymen | Standard across most locals |
| Operating Engineer | 1 per 5 journeymen | Varies |
| Ironworker | 1 per 5–6 journeymen | Varies by local |
California public works have mandatory apprentice participation on projects over $30,000 — see the California DIR Compliance page for details.
CBA fringe OT rules
Not all fringes stay at straight-time rates during overtime. Some CBAs require certain fringe contributions at the OT multiplier. This is CBA-specific — you must read the agreement.
Common patterns
| Pattern | Which trades | Example |
|---|---|---|
| All fringes at ST | Most building trades | Fringes paid at 1.0x for all hours |
| Pension at OT rate | Some IBEW locals | Pension at 1.5x; other fringes at 1.0x |
| All fringes at OT rate | Rare | All fringe contributions multiplied by OT factor |
| Vacation/holiday at OT | Some UA locals | Vacation fund at 1.5x; others at 1.0x |
Federal prevailing wage always uses fringes at straight time (per 29 CFR 5.32). CBA fringe OT only applies when the CBA rate exceeds the PW rate for that component. See Prevailing Wage Rate Management for the full breakdown.
Related resources
- Union Construction Guide — CBAs, hiring halls, trust fund reporting
- Fringe Benefits in Construction — H&W, pension, annuity, vacation funds
- Prevailing Wage Rate Management — CBA vs PW rate priority, fringe OT rules
- Worker Classifications — Trade classifications and tiers
- Apprenticeship Programs — Apprentice ratios and requirements
- California DIR Compliance — CA apprentice requirements
- Prevailing Wage Calculator — Interactive wage + fringe calculation