Class Code 9420 covers municipal, state and other public agency employees grouped as "Others" — staff not assigned to specialized municipal codes (police, fire, public works, healthcare, teachers). The September 1, 2026 approved pure premium rate for California is $7.498 per $100 of payroll, which is the baseline used by carriers to price risk for these public-sector operations.
This classification applies to non-sworn, non-specialized public agency workers whose duties are not assigned to more specific municipal codes. Typical operations include administrative and clerical offices for city/county/state agencies, customer service counters and permit centers, parks and recreation staff, election and records processing, and light facilities or grounds maintenance for public buildings. It captures employees of municipalities, counties, special districts and state agencies when their day-to-day functions are general support, program coordination, recordkeeping or light building/grounds care rather than high-hazard public-safety, heavy public-works, medical, or teaching duties. Employers should assign payroll to 9420 only for roles whose primary duties match these everyday public-agency support functions.
The approved pure premium rate of $7.498 per $100 of payroll is the carriers' actuarial estimate of future loss costs for this class before expense loads and adjustments. Insurers apply that pure premium to your payroll in the class to generate base premium, then adjust it for your employer experience modification, carrier expense loads, schedule credits/debits, state assessments and any deductible or retrospective rating programs—so your actual premium can be higher or lower than the pure premium implies.
Employers in this class must implement a written Injury and Illness Prevention Program (IIPP) and follow relevant Cal/OSHA Title 8 standards. Public-facing and outdoor staff require heat illness prevention, appropriate PPE, and training on bloodborne pathogens or biohazard response where applicable; custodial and maintenance crews must comply with Hazard Communication for cleaning chemicals. Also maintain OSHA 300/301 recordkeeping and report serious injuries within the required Cal/OSHA timeframes.
A PEO like Key HR can help public agencies reduce workers' comp cost drivers by ensuring correct classification of payroll, administering targeted loss-prevention programs (IIPP, heat illness, de-escalation training), and providing proactive claims management and return-to-work coordination. Key HR also centralizes payroll reporting and audit support, tracks experience modification impacts, and provides access to loss-control consultants and group purchasing power that small departments may not achieve on their own.
Get a QuoteNo. 9420 is for public-agency employees not otherwise classified. Police, fire, heavy public works, teachers and medical personnel each have dedicated WCIRB class codes and should not be grouped under 9420.
Allocate payroll based on the employees' primary duties and time spent in each activity. If duties clearly align with another exposed class (e.g., heavy public works), use that class for the payroll portion. Key HR can review job descriptions and payroll records to recommend correct splits and reduce audit exposure.
Maintain a robust IIPP, provide heat-illness and ergonomic training, implement light-duty/return-to-work programs, document safety inspections, and control claims through timely reporting and medical management. Partnering with a PEO for centralized claims handling and loss-control services often produces measurable premium improvements.
Key HR provides pay-as-you-go workers' comp for California employers — no large deposits, no audits, better rates.
Get a Quoteor call (800) 922-4133Key HR provides California employers with pay-as-you-go workers' comp, HR compliance support, and payroll — all through one PEO partnership.