Arizona pool builder workers comp: pool builders hold A-9 Swimming Pools for commercial pools or B-5 General Swimming Pool Contractor for residential ones, and a pool build typically strings together several specialty subs. When you control those trades on your job and the work is part of your business, Arizona can treat their workers as yours, so a current certificate from each sub matters at audit.
A pool job runs through a chain of trades: the dig, steel, plumbing, shotcrete or gunite, tile and coping, plaster and the deck. Under Arizona Revised Statutes 23-902, when you keep supervision or control of a sub's work and that work is part of your trade, Arizona can count the sub's crew as your own employees. A builder who books and inspects every phase is the kind of builder that rule tends to reach. The state-level picture is on Arizona workers comp for contractors and restaurants.
| Rule | What It Means for a Pool Builder | Source |
|---|---|---|
| Licenses | A-9 Swimming Pools (commercial) or B-5 General Swimming Pool Contractor (residential); neither is a workers comp class code. | Arizona Administrative Code R4-9-102 and R4-9-103 |
| Subs you control | Workers of a dig, steel, shotcrete or plaster sub may count as yours when you keep supervision or control and the work is part of your pool business. | Arizona Revised Statutes 23-902 |
| Contract with a sub | A written independent contractor agreement creates a rebuttable presumption, not a final answer. | Arizona Revised Statutes 23-902 |
| One-person subs | A tile setter or plasterer working alone may waive coverage on a waiver that person and your carrier both sign and date. | Arizona Revised Statutes 23-961 |
| Audit charges | Premium on a sub's workers treated as yours requires written audit findings first. | Arizona Revised Statutes 23-961 |
| Owners | Working members and shareholders below 50% are employees; at or above it, only by written acceptance by endorsement, at the carrier's discretion. | Arizona Revised Statutes 23-901 |
| Employee rejection | Allowed only in writing, before an injury. | Arizona Revised Statutes 23-906 |
Many pool companies are owner-run, with the owner selling and designing pools while crews build them. Working partners and sole proprietors come in the way majority owners do. Confirm any owner's place on the policy with the carrier.
Arizona carriers use NCCI classifications, and since we found no official public Arizona list to cite, pool classifications for Arizona aren't printed here. The carrier assigns the classification from what your own crews do. A builder whose crews dig and shoot shells does different work from one that sells, designs and manages subs, and the classification follows that difference. Neither your ROC license nor a California pool classification settles it; the workers comp classification codes page explains the systems. We don't assign or confirm codes.
Illustrative scenario
Illustrative only. A B-5 General Swimming Pool Contractor builder in Scottsdale runs a backyard pool through six subs: dig, steel, plumbing, shotcrete, tile and plaster. Five certificates are current; the plaster crew's policy lapsed in midsummer. The builder's project manager books each phase and walks the shell before plaster goes on, and plastering a pool is part of the builder's trade, so the plaster crew may be treated as the builder's employees. Any premium for them would first need findings the carrier puts in writing. In Nevada, the principal contractor rule would decide the same question.
That rule is explained on Nevada pool builder workers compensation.
Checking Certificates Only When the Contract Is Signed
A certificate shows coverage on the day it was issued. Pool subs work for many builders over a long season, so a policy can lapse between the dig and the plaster. Builders who collect a certificate once and never check again may meet the gap at audit. Ask for a fresh certificate before each phase starts.
If a sub's crew is added, how to dispute a workers comp audit covers what to send back.
Workers comp is for injuries to your crew. A shell that cracks, a neighbor's yard flooded after a line break or a dump truck backing into a block wall is typically a matter for general liability, a contractor's bond or commercial auto. The swimming pool contractor workers comp hub compares how each state handles pool builders.
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The Registrar of Contractors licenses commercial pool work as A-9 Swimming Pools and residential pool work as B-5 General Swimming Pool Contractor. Neither license sets the workers comp classification; the carrier assigns that under NCCI's system from the work your crews do.
They can if you keep supervision or control of the shotcrete work and it is part of your pool business. Arizona Revised Statutes 23-902 may then treat his crew as your employees, though the carrier has to put audit findings in writing before it bills for them. His current certificate is the simplest answer.
If you own 50% or more and work in the business, you're on the policy only if the carrier, at its discretion, accepts you by a written endorsement. Owners below that line who work in the company count as employees anyway. Decide it with the carrier before the season's first dig.
A tile setter working alone as an independent contractor may waive Arizona workers comp on a waiver signed and dated by both the tile setter and your carrier. A contract alone only raises a presumption. If the setter brings anyone else to the pool, ask for a certificate covering them.
Not as of our last review. NCCI filed a proposed 0.2% average decrease on July 28, 2026 for January 1, 2027, and no state decision was found. It is an average across all classifications, so a pool builder's renewal may move differently.
8 official sources
Reviewed by David Gleason, Principal, on .
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Arizona pool builder workers comp, from the dig to the plaster sub's certificate.
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