3.3 Arizona Workers' Compensation Insurance

Mandatory Coverage and How to Secure It

Arizona workers' compensation is mandatory under A.R.S. Title 23, Chapter 6. An employer with one or more employees (including most part-time and seasonal workers) must carry coverage. This is a favorite exam contrast: Arizona is mandatory; Texas is the only state where private workers' compensation is voluntary.

An employer can satisfy the mandate four ways:

The Industrial Commission of Arizona (ICA)

The Industrial Commission of Arizona (ICA) — not DIFI and not the Department of Labor — administers the comp system.

• Oversees coverage, processes claims, and enforces compliance.
• Approves self-insurance applications and monitors solvency.
• Hears contested claims through administrative law judges (ALJs); awards may be reviewed, then appealed to the Arizona Court of Appeals.
• Sets the maximum average monthly wage used to cap benefits, adjusted periodically.

Independent contractor vs. employee

Whether coverage is owed turns on the employment relationship, not the job title. The ICA and courts apply a right-to-control test: who controls how the work is done, supplies tools, sets hours, and can fire at will. A worker labeled an 'independent contractor' but directed like an employee is an employee for comp purposes, and the employer must insure them. Genuine independent contractors are not covered, but misclassification is a leading cause of uninsured-exposure penalties — a key reason producers help business clients audit their payrolls before binding a policy.

Exclusive Remedy: The Grand Bargain

Workers' compensation is the exclusive remedy for a covered workplace injury. In exchange for no-fault, guaranteed benefits, the employee gives up the right to sue the employer for negligence. The employee need not prove the employer was at fault, and benefits are not reduced by the employee's own carelessness.

Note a unique Arizona wrinkle: an employee may reject the workers' compensation system in advance, in writing, and instead retain the right to sue the employer — but this election is rare and must be made before injury.

Benefit Schedule

Income-benefit mechanics (high-yield):

• Waiting period: the first 7 consecutive calendar days of lost time are not paid unless disability lasts 14 days or longer, at which point the 7-day period becomes payable retroactively to the date of injury.
• TTD rate: 66 2/3% of the average monthly wage, capped by the ICA's maximum average monthly wage in effect on the injury date.
• Medical: payable from day one with no statutory cap.

Penalties for Going Bare

Compensability and Reporting

A claim is covered when an injury arises out of and in the course of employment (AOE/COE). Injuries from purely personal disputes, intoxication, or off-duty horseplay may be denied, while many occupational diseases and gradual injuries are compensable. Reporting deadlines are exam-tested:

• The injured worker should notify the employer promptly and file a Worker's Report of Injury with the ICA; the right to benefits can be lost if a claim is not filed within the statutory window (generally one year from injury or from when the worker knew the condition was work-related).
• The carrier must accept or deny the claim within a set period; an accepted claim begins paying medical from day one and income benefits after the waiting period.
• A worker dissatisfied with an award may request a hearing before an ALJ within 90 days of the notice.

Exam tip: Memorize three numbers — 66 2/3% (TTD rate), 7 days (waiting period), 14 days (retroactive trigger) — and remember the agency is the ICA, not DIFI.