State-plan jurisdiction: ADOSH incorporation of federal OSHA updates, freeze date, and State Plan approval history
Arizona as an OSHA State Plan jurisdiction and approval timeline
Arizona operates its own OSHA-approved "State Plan," administered by the Arizona Division of Occupational Safety and Health (ADOSH), subject to federal oversight by the U.S. Department of Labor. State Plans must be "at least as effective as" federal OSHA. Arizona’s State Plan was initially approved on November 5, 1974, under Section 18 of the federal Occupational Safety and Health Act (29 U.S.C. § 667). Arizona’s plan was certified as providing adequate enforcement capability on June 20, 1985. These milestones are documented by federal OSHA and mark Arizona's authority to operate independently within the federal framework.
Incorporation of federal OSHA changes — frozen date and rulemaking requirement
Arizona does not automatically adopt all future changes to federal OSHA standards. Under Ariz. Admin. Code § R20-5-602, Arizona has incorporated the federal OSHA general industry standards (29 C.F.R. 1910, Subparts B through Z) only as they existed on July 14, 2020. Later amendments, editions, or supplements to these federal standards are not automatically adopted. For any post–July 14, 2020 updates to become enforceable in Arizona, the Industrial Commission must complete state rulemaking to specifically incorporate each change.
This means employers should consult both the Arizona Administrative Code and the official Arizona Register for the operative version of occupational safety and health standards—as recent federal OSHA rule changes do not apply in Arizona unless and until the state formally incorporates them through its own process.
(And yes, this has real-world compliance implications: If federal OSHA issues a new rule, Arizona employers remain subject to the July 14, 2020 language until state-level adoption catches up.)
Practitioner takeaway
Practitioners should check both the Arizona Administrative Register and the federal OSHA State Plans directory for the current adoption status of recent standards, as Arizona’s incorporation lags federal changes unless and until formal rulemaking is completed.
Source: Ariz. Admin. Code R20-5-602; A.R.S. § 23-410; 29 C.F.R. § 1953.4
Injury and illness recordkeeping — OSHA 300 Log requirement
Arizona employers with more than 10 employees at any time during the previous calendar year must maintain records of work-related injuries and illnesses using OSHA Forms 300 (Log of Work-Related Injuries and Illnesses), 300A (Annual Summary), and 301 (Incident Report), unless the establishment is classified in a partially exempt low-hazard industry. ADOSH enforces federal recordkeeping requirements under 29 C.F.R. Part 1904, which State Plan states must apply in a manner substantially identical to federal OSHA. The Form 300A Summary must be posted annually from February 1 to April 30 in a location visible to all employees.
Source: 29 C.F.R. § 1904.1; 29 C.F.R. § 1904.37; ADOSH FAQ
Electronic submission of OSHA Form 300A data — size and industry thresholds
Under the federal electronic reporting rule incorporated by the Arizona State Plan, certain Arizona employers are required to submit OSHA Form 300A (Summary of Work-Related Injuries and Illnesses) data electronically via the OSHA Injury Tracking Application (ITA). Arizona has adopted federal OSHA recordkeeping and reporting requirements at 29 C.F.R. Part 1904, including the electronic submission elements. The thresholds are as follows:
1. Establishments with 250 or more employees: Any Arizona establishment with 250 or more employees at any point during the previous calendar year, and that is required to keep OSHA injury and illness records under 29 C.F.R. Part 1904, must electronically submit Form 300A annually (even if not required to submit Forms 300 or 301).
2. Specified high-risk industries (20–249 employees): Establishments in certain high-risk industries, as listed in Appendix A to Subpart E of 29 C.F.R. Part 1904, with 20–249 employees must also electronically submit Form 300A data. The industry list includes (but is not limited to) sectors like manufacturing, construction, transportation, warehousing, and healthcare.
Deadlines: The Form 300A data must typically be submitted by March 2 of the year following the calendar year covered by the form.
State Plan coverage: Because Arizona is a State Plan state, the Division of Occupational Safety and Health (ADOSH) enforces these standards identically for establishments under its jurisdiction. Federal OSHA remains responsible for federal workplaces and industries specifically excluded from State Plan enforcement.
Whistleblower and anti-retaliation protections under Arizona workplace safety law
Arizona law prohibits employers from retaliating against employees who engage in protected workplace safety activities. Under A.R.S. § 23-425, an employer may not discharge or otherwise discriminate against any employee because the employee has:
- Filed a complaint related to occupational safety or health with the Industrial Commission of Arizona's Division of Occupational Safety and Health (ADOSH),
- Instituted or caused to be instituted any proceeding under or related to state workplace safety law, or
- Testified, or is about to testify, in a proceeding on workplace safety.
Protected activities: Under Arizona Administrative Code R20-5-680 (as amended June 6, 2024), protected activities include:
- Filing a complaint with ADOSH alleging a violation of Arizona occupational safety and health laws or regulations,
- Instituting, participating in, or testifying in workplace safety proceedings,
- Requesting an inspection from ADOSH.
Refusing dangerous work: The June 2024 amendments to R20-5-680 clarify that an employee’s refusal to work is protected only if (1) the refusal results from a "good faith" apprehension of death or serious injury caused by a hazardous condition, (2) there is insufficient time to eliminate the danger through regular enforcement processes, and (3) the employer fails to remedy the condition after notice. Importantly, refusal to follow valid health or safety rules, or standards, is not protected.
Filing a retaliation complaint and remedies:
- Retaliation complaints must be filed with ADOSH within 30 days of the alleged adverse action (R20-5-682).
- ADOSH investigates, and if a violation is found, remedies may include reinstatement, back pay, or other appropriate relief.
These anti-retaliation provisions apply to employees covered under Arizona’s State Plan for occupational safety and health. The statutes themselves do not detail industry or sectoral exclusions.
Recent change: The explicit criteria in R20-5-680 regarding refusal to work took effect June 6, 2024, clarifying the scope of protection for employees refusing dangerous work.
Source: A.R.S. § 23-425; Ariz. Admin. Code R20-5-680 (June 6, 2024); Ariz. Admin. Code R20-5-682
ADOSH civil penalty factors and calculation method
Arizona’s Division of Occupational Safety and Health (ADOSH) adjusts proposed civil penalties for workplace safety violations by considering several mandatory factors. These are enumerated by both statute and regulation:
- Size of employer: The number of employees, allowing for reductions for smaller businesses.
- Gravity of the violation: The level of risk, severity, and likelihood of harm.
- Good faith of employer: Demonstrated efforts to comply or correct hazards, including prompt abatement actions.
- Quick-fix abatement (regulatory factor only): Rapid correction of a hazard prior to or during an inspection is specifically recognized by regulation.
- History of previous violations: Whether the employer has been cited before, which can increase penalties for repeat offenses.
These requirements are codified in Ariz. Admin. Code § R20-5-622(B), which provides that the Director must consider the above factors when proposing penalties. By statute, A.R.S. § 23‑418(I) mandates that penalty assessments give due consideration to the gravity of the violation, number of employees, the employer’s good faith, and history of violations. The "quick‑fix abatement" adjustment is provided for in regulation but is not listed in the statute.
Comparison to federal OSHA: Federal OSHA applies a nearly identical set of factors—size, good faith, history, and gravity—with specific percentage reductions and a prescribed calculation sequence set out in the OSHA Field Operations Manual, Chapter 6. Arizona, by contrast, uses the same general factors but does not specify a required order or fixed percentage reductions; the ADOSH Director has discretion to weigh and apply these factors on a case-by-case basis, and the process is not driven by a public matrix or formula as in the federal system.
Arizona workplace safety — complaint procedures (ADOSH complaint process and inspections in response to employee complaints)
An employee or employee representative (including a union rep or attorney, as provided in A.R.S. § 23‑408) can file a workplace safety or health complaint with the Arizona Division of Occupational Safety and Health (ADOSH) by submitting a written, signed notice to the ADOSH Director or an authorized agent. The complaint must specify the alleged hazard or violation or imminent danger “with reasonable particularity” (A.R.S. § 23‑408(F)).
Types of complaints: ADOSH distinguishes between “formal” complaints (those that meet criteria for inspection) and inquiries or referrals that may result in further follow-up. A formal complaint is:
- Put in writing (often using ADOSH’s online form or the OSHA-7 form),
- Signed by a current employee or their authorized representative, and
- Alleges either: (a) a violation exposing employees to physical harm or (b) an imminent danger.
Procedures and inspection response: When a formal complaint provides reasonable grounds to believe a violation or hazard exists, ADOSH normally conducts an on-site inspection. Inspections triggered by serious, credible formal complaints are often prioritized—typically within five working days if resources permit, a practice consistent with federal OSHA procedure. If a complaint does not meet all formal complaint criteria, ADOSH may conduct an inquiry—generally requesting a written response from the employer, and escalating to inspection if the response is inadequate or the hazard appears unresolved. These practices are documented in ADOSH’s published complaint procedures.
Comparison to federal OSHA: ADOSH, as a state-plan agency, is required by federal OSHA to operate in a manner “at least as effective” as federal OSHA. Its process for handling, reviewing, and responding to employee complaints—including prioritizing serious complaints for inspection—is substantially aligned with the federal OSHA Field Operations Manual structure for complaint review and inspections.
Source: ADOSH Complaint Policies and Procedures; A.R.S. § 23-408(F); OSHA Arizona State Plan