← back to workercheck.app The 5 most-misclassified
NCCI codes in 2024.
v0.1 · 38 NCCI states · last updated 2026-05-01
These are the five class codes carrier auditors reclassify most frequently in the NCCI states. Sourced from the IA Magazine 2024 reclassification roundup, Federato carrier-data summary, and our own analysis of duty-keyword triggers. If your payroll has any of these codes assigned, scan the duty descriptions in this guide — there's a 35–60% chance one of the five applies somewhere.
How to use this guide
Each code shows the typical reclassification pair (current → suggested), the duty-keywords that should have triggered the higher code, and the typical 3-year retroactive exposure. Take this to your broker before your annual audit.
i.The five codes
Clerical Office Employees
The most-reclassified-out-of code in NCCI states. By definition, 8810 requires "exclusively clerical" duties — no shop exposure, no field exposure, no driving. The moment a role helps in the warehouse, drops by job sites, or runs deliveries, 8810 doesn't apply.
Currently 8810 — Clerical (rate ~$0.20/$100)
Auditor reclassifies to 7380 / 8742 / governing class
Duty-keywords that should trigger reclassification: "delivers," "drops by," "helps in warehouse," "occasional shop work," "site visits," "drives company vehicle."
Typical 3-yr exposure: $4,000–$25,000 per role.
Drivers, Chauffeurs, Messengers
The #1 governing-class-change finding in carrier audits — Federato data shows ~80% of audits with a delivery role result in a 7380 reassignment. The driver code's rate is typically 8–25× the rate of the code it's reclassified out of (often a clerical or sales code).
Currently (mis-)assigned to 8810 (clerical) / 8742 (outside sales) / 9079 (restaurant)
Auditor reclassifies to 7380 — Drivers
Duty-keywords: "delivery," "courier," "drops off," "picks up," "route," "company vehicle," "DOT log."
Typical 3-yr exposure: $6,000–$30,000 per role.
Salespersons, Collectors, or Messengers — Outside
"Outside sales" — the salesperson visits client sites but does no manual labor at those sites. The trap: when sales reps occasionally help with installation, deliver samples, or work on-site even briefly, 8742 no longer applies and the role takes the governing class code (carpentry, retail-shop, manufacturing, whatever's relevant).
Currently 8742 — Outside sales (rate ~$0.40/$100)
Auditor reclassifies to Governing class (5645 / 5651 / etc.)
Duty-keywords: "helps install," "delivers samples," "demos on-site," "trains client staff hands-on," "occasional field work."
Typical 3-yr exposure: $5,000–$22,000 per role.
Carpentry — Detached One-or-Two-Family Dwellings
5645 is the lowest of the carpentry codes — applies only to detached single/duplex residential. Multi-family, commercial, or any larger framing kicks the rate up to 5651 (carpentry NOC) or beyond. This is one of the most misclassified construction codes because contractors take whatever work comes in, and "carpentry" often gets coded as 5645 by default.
Currently (default) 5645 — Detached residential (rate ~$5–$8/$100)
Auditor reclassifies to 5651 — Carpentry NOC (rate ~$8–$13/$100)
Duty-keywords: "townhomes," "multi-family," "duplex+," "commercial framing," "tenant build-out," "office buildout," "apartment renovation."
Typical 3-yr exposure: $8,000–$40,000+ per role for active carpenters.
Restaurants — All Employees
9079 is the catch-all for restaurant operations — back-of-house, front-of-house, dishwashers, cleaning. The trap: any role that involves driving for delivery (catering, third-party delivery, off-site events) is supposed to be split out under 7380. Most owner-operators don't.
Currently 9079 — Restaurant (rate ~$2–$4/$100)
Auditor reclassifies driver portion to 7380 — Drivers (rate ~$4–$9/$100)
Duty-keywords: "catering," "off-site events," "third-party delivery," "DoorDash from our kitchen," "weekend delivery shift," "personal-vehicle delivery."
Typical 3-yr exposure: $3,000–$12,000 per affected role.
ii.What to do with this
- Pull your latest payroll register. Sort by current class code.
- For every 8810, 8742, 9079, and 5645 row — read the duty description. Compare against the keywords above.
- Flag every role where any of those keywords appear. These are the carrier-audit-trigger candidates.
- Send the flagged list to your broker with the reclassification suggestion. Brokers can update class codes on the policy mid-term and submit a class-code dispute if needed.
- Update job descriptions. If a role's duties have shifted (clerical→hybrid clerical+driving), get the duty description on file before the next renewal so the audit doesn't surprise you.
The math, briefly
Auditor reclassifies 1 employee from 8810 ($0.20/$100 of $50K wages = $100/yr premium contribution) to 7380 ($5.00/$100 = $2,500/yr). Difference: $2,400/yr. Times 3 years retroactive = $7,200 surprise bill — for a single role. Multi-role discoveries are how the typical "$20K audit" stories happen.
iii.What this guide doesn't cover
- CA, NY, NJ, PA, TX — these states use independent rate bureaus (WCIRB, NYCIRB, CRIB, PCRB, TDI) with different class codes and rules. v1 of this guide is NCCI-only.
- Monopolistic state funds (ND, OH, WA, WY) — state-run WC, no NCCI involvement.
- Other top-50 codes. The full WorkerCheck audit covers all 50 most-misclassified codes plus the long tail. This guide is the headline 5.
- Experience modification. The 3-yr exposure numbers in this guide assume an x-mod of 1.00. Your actual mod could be 0.75–1.50, which scales the exposure linearly.
iv.Next step
The full WorkerCheck audit takes the same approach across all 50 top-misclassified codes, your full payroll register, and per-role duty descriptions you provide — and gives you a per-employee risk report your broker can act on.
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© 2026 WorkerCheck · v0.1 · This guide is a self-assessment reference, not insurance advice. Take any class-code change to your licensed broker before action.