What Class Code 9180 Covers
Class code 9180 applies to winery production operations — the activities that occur in the winery facility itself, from receiving grapes at the crush pad through fermentation, aging, bottling, and case warehousing. This includes crush pad and receiving operations where incoming grapes are sorted, destemmed, and crushed; fermentation operations where must is managed in tanks; barrel cellar operations where wine ages in oak barrels on racks; bottling line operations where wine is filtered, filled, sealed, labeled, and packaged; and finished goods warehouse operations where cased wine is stored and shipped.
The key geographic and operational distinction is between the vineyard (growing) and the winery (processing). Agricultural vineyard operations including planting, training, irrigating, spraying, and harvesting grapes in the field use different agricultural class codes appropriate to farm and vineyard labor. Once harvested grapes are delivered to the crush pad and winery production begins, the operations fall under 9180.
Tasting room operations may or may not be included under 9180 depending on carrier treatment and how the tasting room is structured. A separately operated tasting room with dedicated staff that functions as a retail and hospitality operation may require separate treatment under 9079 (for food and wine service) or retail codes.
Who This Code Applies To
Winery production workers including cellar workers sometimes called cellar rats, fermenter monitors, pump-over and punch-down crew, barrel handlers, and forklift operators in the barrel cellar are the primary 9180 employees. These workers are the highest-exposure category because they interact with heavy equipment, work at height on barrel racks that can be three or more tiers high, and handle large volumes of liquid in tanks and vessels.
Bottling line operators and laborers who monitor the filling line, operate labeling and foiling equipment, manage case packing and palletizing, and maintain the bottling line are 9180 workers. Winemakers, assistant winemakers, and cellar masters who direct production operations are 9180 workers.
Administrative and sales staff including tasting room managers, DTC sales coordinators, and marketing personnel who work exclusively in office or retail environments may qualify for 8810 (clerical) or retail classification rather than the production code depending on carrier guidelines.
Rate Calculation Example
At the WCIRB advisory rate of $3.22 per $100 of payroll, a boutique winery with $600,000 in production staff payroll faces an estimated gross premium of approximately $19,320 before carrier LCM. For Napa and Sonoma wineries where production staff wages have increased significantly with labor market tightening, the gross payroll base and resulting premium have grown correspondingly.
A large production winery with $3 million in combined production and warehouse payroll faces an estimated gross premium of approximately $96,600. For high-volume production wineries in the Central Valley operating multiple shifts during crush season with a large seasonal workforce, the seasonal payroll spike during harvest from August through October can represent 30-40% of annual payroll and must be accurately reported.
Common Misclassifications
The most common misclassification error for wineries is including vineyard agricultural labor under 9180. Vineyard workers who plant, prune, tie, irrigate, and harvest grapes in the field are subject to California agricultural workers comp rules and are typically classified under specific agricultural codes. Mixing vineyard agricultural payroll with winery production payroll under 9180 can create regulatory issues.
Seasonal harvest workers and crush crew present a classification challenge. Workers brought on specifically for the harvest period who work exclusively in vineyard picking operations are agricultural workers. Workers who come onto the crush pad and production facility during harvest are 9180 workers. For operations that use the same seasonal workers across both vineyard and winery, accurate time and payroll tracking by work location is critical.
Tasting room staff misclassification cuts both ways. Including tasting room servers and retail staff under the production code (9180) overstates risk for the retail function. Attempting to include production workers under a lower-rated retail code understates risk for the production function.
Common Injury Types
Forklift injuries in the barrel cellar and finished goods warehouse are the most severe injury exposure at wineries. Forklifts moving heavy barrels in tight cellar aisles create struck-by, crush, and tip-over risks. Falls from barrel racks during barrel maintenance operations including topping, sampling, and rolling are high-severity events.
Chemical exposure is a distinctive winery hazard. Sulfur dioxide (SO2) is used extensively in winemaking as an antimicrobial and antioxidant. Tank-washing and barrel-cleaning operations using peracetic acid, citric acid, and caustic soda create skin and eye exposure risks. CO2 accumulation in below-grade tank and barrel areas, where CO2 is a byproduct of fermentation and is denser than air, creates confined-space asphyxiation risk — one of the most serious winery hazards.
Musculoskeletal injuries from barrel handling including rolling barrels, stacking barrels, and performing repetitive pumping and filtering operations are frequent and cumulative. Falls on wet crush pad surfaces during harvest are a consistent fall exposure.
Risk Mitigation
Confined-space entry programs for tank and below-grade cellar operations are legally required under Cal/OSHA and operationally critical. Fermentation tanks are permit-required confined spaces. CO2 accumulation from active fermentation can rapidly displace oxygen and render a tank fatally hazardous within seconds of entry. Written confined-space entry permits, atmosphere testing for CO2 concentration and oxygen level, a designated attendant, and rescue equipment are all required components of a legally compliant confined-space program.
Forklift safety programs must meet Cal/OSHA requirements: operators must be trained and certified on the specific equipment they will operate, training records must be documented, and equipment must be inspected before each use with deficiencies corrected before operation. In barrel cellars, aisle width standards that allow safe forklift clearance around barrel racks and designated pedestrian walkways distinct from forklift travel lanes are meaningful injury prevention measures.
Chemical handling controls are critical. PPE programs for SO2 handling including respirators rated for SO2, chemical-resistant gloves and aprons for acid and caustic handling, eyewash stations at tank washing and barrel washing locations, and annual respiratory medical evaluations for workers with SO2 exposure are the core chemical safety elements for California winery operations.
Best Carriers for Class Code 9180
The California wine country workers comp market includes specialists who understand winery operations. ICW Group writes winery accounts in Napa, Sonoma, and the Central Valley. The Hartford and Travelers both write winery production accounts for mid-size and large operations.
Seasonal workforce management is the primary underwriting concern for harvest operations. Carriers want to see documented hiring processes for seasonal crush workers, including pre-employment orientation, confined-space and chemical handling training for all production workers, and clear language in seasonal employment agreements about safety program expectations.