Arizona concrete contractors license under C-9 Concrete, and finishing and flatwork often go to small subs. A finisher who works alone can waive workers comp only on a waiver that the finisher and your carrier both sign and date. An independent contractor agreement by itself creates only a presumption, and the facts on the job can rebut it.
Arizona Revised Statutes 23-902 settles most concrete coverage questions. When you hire a sub to place, finish or saw concrete, keep supervision or control of how it gets done, and that work is part of your own business, Arizona may count the sub and everyone on its crew as your employees. Finishing usually sits inside a concrete contractor's trade, so control often decides it. The Arizona statutory employer rule is laid out for every trade on the state page.
| Rule | What It Means for a Concrete Contractor | Source |
|---|---|---|
| Statutory employer | A finishing or flatwork sub and its crew may count as your employees when you keep supervision or control and the work is part of your concrete business. | Arizona Revised Statutes 23-902 |
| Independent contractor agreement | A written agreement with a finisher creates a presumption of independent status that the job facts can rebut. | Arizona Revised Statutes 23-902 |
| Sole proprietor waiver | A finisher who works alone may waive coverage on a form that the finisher and your carrier both sign and date. | Arizona Revised Statutes 23-961 |
| Audit charges for subs | Before charging premium on a sub's workers as your employees, the carrier needs written audit findings. | Arizona Revised Statutes 23-961 |
| Working owners | A working LLC member or shareholder below 50% is an employee; at 50% or more, only by written acceptance by endorsement, at the carrier's discretion. | Arizona Revised Statutes 23-901 |
| Employee rejection | A laborer or finisher may reject coverage, but only in writing and before an injury. | Arizona Revised Statutes 23-906 |
| License class | Concrete work is licensed as C-9 Concrete. A license class is not a workers comp class code. | Arizona Administrative Code R4-9-102 |
Working partners and sole proprietors follow the same election route as majority owners, and an owner brought onto the policy that way is assumed to earn no less than $600 a month. Confirm with the carrier whether you stay on.
Concrete payroll in Arizona is sorted under NCCI's classification system. With no official public Arizona list to cite, this site leaves Arizona codes unpublished, and the carrier decides how a concrete crew is classified from what it pours: slab foundations, tilt-up panels and elevated decks may be weighed differently. Your C-9 Concrete license says what you may contract to build, not how your payroll is classified.
A California concrete code has no standing on an Arizona pour, and workers comp class codes for contractors and restaurants explains how the three states' systems differ. We don't assign or confirm codes.
Illustrative scenario
Illustrative only. A C-9 Concrete contractor pours house slabs for a Mesa homebuilder and hands the finishing to two outside crews. One is a finisher who works alone and signed a sole proprietor waiver, countersigned and dated by the contractor's carrier. The other is a three-person crew with an independent contractor agreement and no policy. The contractor's foreman sets pour times and signs off on each finish, and finishing is concrete work, so the three-person crew may be treated as the contractor's employees despite the agreement. Before billing for that crew, the carrier would first owe the contractor written audit findings.
Across the line, the carrier-signed waiver drops out: Nevada handles the same pour through its principal contractor rule, as Nevada concrete workers compensation explains.
Treating the Contractor Agreement as the Waiver
A signed independent contractor agreement with a finisher is not the sole proprietor waiver. The agreement only raises a presumption the job facts can overturn, while the waiver needs the finisher's signature and your carrier's, each dated. Concrete contractors who file the agreement and skip the waiver may see the finisher's pay raised at audit.
Workers comp is meant for your crew's injuries. A cracked driveway, slurry washed into a neighbor's yard or a mixer truck crash typically falls to general liability and commercial auto, or to a contractor's bond. The concrete contractor workers comp hub sets Arizona beside the other two states, and crews who also grade pads can see Arizona excavation workers comp insurance.
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It depends on control and paperwork. If you direct the finisher's work and finishing is part of your concrete business, Arizona Revised Statutes 23-902 may treat the finisher and any helpers as your employees. A finisher working alone can waive coverage, but only on a waiver that both the finisher and your carrier sign and date.
No. The Registrar of Contractors license says what concrete work you may contract for. The workers comp classification comes from NCCI's system, applied by the carrier to the pouring and finishing your crews do, such as flatwork, foundations or structural walls. We don't assign or confirm Arizona codes.
Not automatically. A working LLC member or shareholder at 50% or more is treated as an employee only when the carrier accepts the owner in a written endorsement, a decision left to the carrier. Under that line, a working owner already counts. Work the choice out with the carrier before a pour, not after an injury.
Possibly, if Arizona's statutory employer rule pulls the sub's crew onto your payroll. Under Arizona Revised Statutes 23-961, the carrier has to document its audit findings in writing before it bills premium for those workers, so ask for the findings and answer them with certificates, waivers and invoices.
NCCI filed a proposed average decrease of 0.2% on July 28, 2026 for policies from January 1, 2027. It is a statewide average across all classifications and stays a proposal until the state acts. A concrete company's own premium still depends on its classifications, payroll and claims.
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Arizona concrete workers comp, from finishing subs to the audit.
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