What is California Comp Authority?

California Comp Authority has 25 pages. See its app structure and page count in a summary based only on verified setup data.

Are plumbers classified separately from HVAC?

Yes—plumbing and HVAC typically use distinct WCIRB class codes with different rates, even when performed by the same company. Payroll must be tracked by trade.

Does trenching change my classification?

Significant excavation work can shift some payroll into excavation class codes, which carry higher rates. Discuss the split with your broker.

Do I need coverage for drain-cleaning technicians?

Yes. Drain technicians are employees and their payroll is included under the plumbing class code unless a separate code applies.

Workers' Compensation Insurance for California Plumbing Contractors

California plumbers face lifting, slip, and confined-space hazards that drive workers' compensation claims, though generally at lower severity than roofing or framing. Coverage is rated on plumbing class codes by payroll and adjusted for claims history and experience modification.

Get a Quote

Key Takeaways

Plumbing carries specific workplace hazards that drive class-code selection and premium.
Correct classification and payroll tracking are essential to accurate pricing and audit results.
Claims history and the experience mod strongly affect both cost and carrier options.

Plumbing-Specific Hazards

Lifting and material-handling strain
Slips and falls on wet surfaces
Confined-space and trench work
Tool and burn injuries

Common Workers' Compensation Exposures

Residential vs. commercial code differences
Trenching and excavation exposure
Service-call vehicle exposure
Subcontractor certificate tracking

Typical Employee Roles

Journeyman plumbersApprenticesDrain techniciansProject managersService plumbers

Classification Considerations

Plumbing is typically split into residential and commercial class codes with different rates. Trenching work may shift classification toward excavation codes.

Payroll Considerations

Track residential versus commercial hours separately. Service-call volume can add payroll variability.

Claims Considerations

Lifting and slip injuries are most common. Proper material handling and trench safety reduce frequency and severity.

Experience Modification

Moderate base rates mean the mod has a solid but not extreme premium effect. Consistent safety records help keep the mod below 1.00.

Risk-Management Considerations

Material-handling and lifting training
Trench and confined-space safety
Slip and fall prevention
Tool safety
Modified-duty return-to-work roles

Information Needed to Obtain a Quote

Mix of residential vs. commercial work
Trenching or excavation performed
Annual payroll by trade
Loss runs for three to five years
Current experience mod
Renewal date and current carrier

Plumbing Workers' Comp FAQ

Need Workers' Comp for Your Plumbing Business?

Get options based on your operations, payroll, and claims history.

Get a Quote