How Is Workers' Comp Calculated for Roofers?
Workers’ comp cost commonly depends on business location, type of roofing work, total payroll, and claims history. In experience rating, payroll and loss data are analyzed over time to calculate the mod. Premium usually starts with an estimated exposure and is then finalized after an audit. Roofing is generally a higher-cost class because claim frequency is materially higher than many other classes. In many NCCI states, roofing falls under class code 5551; California uses separate roofing classifications.
What usually moves the premium for a roofing company:
Residential vs. commercial work
Repair/service vs. tear-off vs. full replacement
Experience mod and prior losses
Subcontractor usage and worker-status issues
Multi-state operations
Contract endorsements, such as a waiver of subrogation
A practical way to shop is to gather estimated annual payroll by class, employee counts, years in business, current or prior coverage info, and loss runs if you have them. Those are the inputs underwriters actually use.