WCIRB Class Code 2797 applies to employers that manufacture mobile homes, automobile bodies and recreation vehicles in California. The approved pure premium rate for 9/1/2026 is $10.827 per $100 of payroll, which reflects the higher frequency and severity of manufacturing exposures in these industries.
This classification covers shops and plants that perform the fabrication and final assembly of mobile homes, manufactured housing components, motor vehicle bodies and recreation vehicles (RVs). Typical operations include chassis and frame assembly, structural welding and riveting, fiberglass and composite layup, cabinetry and interior finish carpentry, HVAC, plumbing and electrical installation, and final painting and refinishing. The code applies to shop-based manufacturing and permanent production lines; it does not apply to simple vehicle repair or detached contractor installation work, which are classified separately. It also captures ancillary activities performed on-site such as material handling, parts machining, paint booth operations, and quality inspection.
The pure premium rate of $10.827 per $100 payroll is the loss-cost component that insurers use to estimate the expected cost of claims for this class. To compute a base premium multiply your payroll for employees in this class by 0.10827 (that is, $10.827/100); final premium is adjusted by your insurer s expense loads, experience modification (X-mod), schedule credits/debits, state assessments and any policy-level discounts. Factors that materially affect the premium you actually pay include payroll mix, claims history, safety controls (ventilation, hot-work permits, PPE), and how accurately employees are classified at audit.
Manufacturing of mobile homes, automobile bodies and RVs is subject to California Title 8 requirements and the Injury and Illness Prevention Program (IIPP). Key compliance areas include respiratory protection and fit testing for isocyanate/solvent exposures, hazard communication for composite resins and coatings, ventilation and dust/overspray controls for spray booths, welding and cutting safety, machine guarding and lockout/tagout for powered equipment, and hot-work permit procedures for welding near flammable materials.
A PEO like Key HR can centralize payroll classification, manage payroll audits, and administer workers compensation claims to reduce misclassification and premium surprises. We deliver safety program development (IIPP templates, respirator programs, hot-work procedures), on-site or remote training, return-to-work coordination and claims advocacy—services that commonly improve experience modifiers and bring down long-term workers comp costs for manufacturers.
Get a QuoteNo. 2797 is for manufacturing and final assembly of mobile homes, vehicle bodies and RVs. Repair, collision, and routine auto maintenance are typically classified under different auto repair or collision codes. If a facility both manufactures and repairs, payroll should be split and each activity reported to the correct class.
Key controls include engineering ventilation for spray booths and composite shops, respiratory protection and fit testing, solvent substitution and closed resin systems, hot-work permitting, proper machine guarding and lockout/tagout, powered-lift and ergonomics programs, and pre-employment testing plus routine training and inspections.
If subcontractors supply their own insurance and you verify certificates, their payroll is generally excluded. If you control, direct, or pay temporary workers, their payroll must be reported under the employer of record. A PEO can manage certificate tracking, vendor audits and accurate payroll reporting to avoid misclassification at audit.
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.