Arizona workers’ compensation requirements for employers start with a single rule: if you have even one regularly employed worker, you must carry a workers’ compensation policy. That mandate applies under A.R.S. § 23-902 to corporations, LLCs, partnerships, sole proprietors with employees, and government entities on the same terms.1Industrial Commission of Arizona. Workers’ Compensation Insurance Employers’ Frequently Asked Questions Coverage buys you a no-fault system that pays an injured worker’s medical bills and lost wages, and it shields you from being sued directly for the injury. Skip it, and the fines, lawsuit exposure, and reimbursement obligations stack quickly.
Who Has to Carry a Policy
The threshold is low. Any worker “regularly employed” in your trade, business, or profession triggers the requirement, and Arizona defines regular employment to include both continuous and seasonal work. A holiday retail hire or a summer landscaping crew counts.2Arizona Legislature. Arizona Revised Statutes 23-902 – Employers Subject to Chapter; Exceptions Full-time, part-time, minors (whether legally employed or not), and workers you lease through a professional employer organization are all inside the mandate. So are the state, counties, cities, towns, municipal corporations, and school districts.
The statute carves out a narrow set of exceptions. Domestic servants are excluded from mandatory coverage, though a household employer can opt in voluntarily. Workers whose employment is both casual and outside the usual course of your business are also excluded, but both conditions have to be true at the same time. A one-off helper doing something that falls within your normal operations still counts as an employee.3Arizona Legislature. Arizona Revised Statutes 23-901 – Definitions A sole proprietor who works as an independent contractor for another business can sign a written waiver of their own coverage rights, co-signed by the hiring business’s carrier; if that sole proprietor has their own employees, those employees still need to be covered.4Arizona Legislature. Arizona Revised Statutes 23-961 – Methods of Securing Compensation by Employers
How to Buy Coverage in Arizona
Arizona has no state-run insurance fund. You buy a policy on the private market from any carrier licensed to write workers’ compensation in the state, either directly or through a licensed insurance agent.1Industrial Commission of Arizona. Workers’ Compensation Insurance Employers’ Frequently Asked Questions When your application is approved, the carrier issues a certificate of insurance that serves as proof of compliance.
To underwrite the policy, an insurer will typically ask for your Federal Employer Identification Number, your estimated annual payroll (premiums are calculated per $100 of payroll, so accuracy matters), and the NCCI classification codes that describe each job category in your business. A clerical worker carries a very different code than a roofer. Misclassifying people into lower-risk codes to shrink the premium almost always surfaces during the annual payroll audit, and the retroactive adjustment is painful.
Keep payroll and employment records for the most recent four calendar years. The same records satisfy both unemployment insurance and workers’ compensation audit requirements.5Arizona Department of Economic Security. Employer Requirements – Record Keeping If you can’t produce clean records during an audit, the insurer will estimate your premium from its own assumptions, and those assumptions rarely favor you.
Two alternatives exist for employers who don’t fit the standard market. Large companies can apply to the Industrial Commission to self-insure if they meet the financial thresholds — at least $2 million in annual payroll, $50 million in total assets or a cash-flow ratio of at least 0.25, and five years of Arizona operations.6Industrial Commission of Arizona. Self-Insurance Authority Information Employers rejected by two private carriers can access the assigned risk pool through the National Council on Compensation Insurance. Premiums there run higher than the voluntary market, and employers with premiums of $250,000 or more land in a mandatory retrospective rating plan.
Employees Versus Independent Contractors
Misclassifying an employee as an independent contractor is one of the costliest mistakes Arizona employers make. Calling someone a contractor doesn’t eliminate your insurance obligation if the relationship actually looks like employment; it just means you’ve been operating without required coverage.
Arizona’s test comes down to who controls the work. The analysis looks at whether you dictate when, where, and how tasks get done, whether you provide the tools and materials, whether the person can take on other clients, and whether you pay by the hour rather than a flat project fee. No single factor decides it. The overall relationship matters, and the core question is whether you have the right to direct and control the work.
Written Contractor Agreements
A.R.S. § 23-902(D) gives you a formal way to document a genuine contractor relationship. A written agreement signed and dated by both parties, confirming that the business does not supervise or control the contractor’s actual work, creates a rebuttable presumption of contractor status. The agreement has to include a disclosure that the contractor is not entitled to workers’ compensation benefits from the business.2Arizona Legislature. Arizona Revised Statutes 23-902 – Employers Subject to Chapter; Exceptions
To qualify, the agreement must confirm that you do not require exclusive service, do not provide tools or business licenses, do not pay by the hour, do not dictate work schedules, and do not combine operations with the contractor. Submit the signed agreement to your insurance carrier, and no premium can be collected on payments to that contractor unless someone rebuts the presumption. The agreement is automatically void if the worker signed under misrepresentation, fraud, or coercion.
Required Workplace Postings
Buying a policy is not the end of the job. Under A.R.S. § 23-906(D), every covered employer must post a notice at the workplace, in English and Spanish, naming the insurance carrier and policy number and informing employees that they are presumed to have accepted workers’ compensation coverage unless they file a written rejection before any injury.7Arizona Legislature. Arizona Revised Statutes 23-906 – Liability Under Chapter or Under Common Law of Employer Securing Compensation8Industrial Commission of Arizona. Workers’ Compensation Law Bilingual Poster Blank rejection forms have to be available at the workplace as well.9Industrial Commission of Arizona. Employee Rejection of Terms Form
The consequence of letting the posting lapse is not a fine. Any employee hired during a period when the notice is down or the rejection forms are unavailable is not considered to have accepted workers’ compensation coverage. That worker can then decide after an injury whether to take comp benefits or sue you in civil court. The posting protects you as much as it informs your workers.
If your workers face potential exposure to bloodborne pathogens or infectious diseases, Arizona Administrative Code § R20-5-164 requires two additional notices — “Work Exposure to Bodily Fluids” and “Work Exposure to MRSA, Spinal Meningitis, or Tuberculosis” — displayed immediately next to the standard poster. Your carrier should supply them, and the Industrial Commission provides them on request.10Legal Information Institute. Arizona Administrative Code R20-5-164 – Human Immunodeficiency Virus, Hepatitis C, MRSA, Spinal Meningitis and Tuberculosis
Reporting a Workplace Injury
Once an employee reports an injury, you have ten days from the date you received notice to file an Employer’s Report of Injury with both the Industrial Commission and your insurance carrier. The form must be completed in full, and the commission encourages electronic submission.11Industrial Commission of Arizona. Employer’s Report of Injury Form
A work-related fatality has a much tighter deadline. You must notify the commission by phone, telegram, or electronic filing no later than the next business day after the death.
Penalties for Operating Without Coverage
A.R.S. § 23-907 sets out an escalating civil penalty structure, and the exposure compounds if a worker is actually injured while you are uninsured.12Arizona Legislature. Arizona Revised Statutes 23-907 – Liability of Employer Failing to Secure Compensation; Defenses
- First offense: the Industrial Commission can assess up to $1,000 against any employer subject to the law who lacks coverage.
- Second offense within five years: up to $5,000.
- Third or subsequent offense: up to $10,000, and the commission can weigh the premiums you avoided as an aggravating factor.
- Court injunction: the commission can go to court to shut down your operations until you obtain a policy.
If a worker is injured while you have no policy, Arizona’s Special Fund pays the benefits and then comes after you for full reimbursement, plus a penalty of 10% of what the fund spent or $1,000, whichever is greater, plus interest. That reimbursement obligation acts as a court judgment and can become a lien on your property for up to eight years.
The worst piece may be the loss of your defenses in court. An uninsured employer cannot raise assumption of risk or contributory negligence against an injured worker’s lawsuit. Proof of the injury alone creates a presumption that you were negligent, and you carry the burden of disproving it.