General Engineering Contractor Insurance in California (A)

What the A license covers

The CSLB’s definition

“A general engineering contractor is a contractor whose principal contracting business is in connection with fixed works requiring specialized engineering knowledge and skill, including the following divisions or subjects: irrigation, drainage, water power, water supply, flood control, inland waterways, harbors, docks and wharves, shipyards and ports, dams and hydroelectric projects, levees, river control and reclamation works, railroads, highways, streets and roads, tunnels, airports and airways, sewers and sewage disposal plants and systems, waste reduction plants, bridges, overpasses, underpasses and other similar works, pipelines and other systems for the transmission of petroleum and other liquid or gaseous substances, parks, playgrounds and other recreational works, refineries, chemical plants and similar industrial plants requiring specialized engineering knowledge and skill, powerhouses, power plants and other utility plants and installations, mines and metallurgical plants, land leveling and earthmoving projects, excavating, grading, trenching, paving and surfacing work and cement and concrete works in connection with the above mentioned fixed works.”

General engineering claims are big when they happen: an excavator striking a gas line, a trench collapse, a utility outage blamed on your crew, or a vehicle hitting a worker in a work zone. Public agencies and prime contractors set high limits, require additional insured and waiver of subrogation wording, and often ask for pollution coverage on underground work.

The A coverage stack

General Liability — often $2M per occurrence on public work, with additional insured wording
Workers’ Compensation — payroll split across grading, paving, excavation and pipe codes
Commercial Auto — dump trucks, lowboys and service trucks
Inland Marine — excavators, loaders, compactors and rented equipment
Bonds — the $25,000 CSLB bond plus bid, performance and payment bonds
Excess & Umbrella — public agencies commonly require $5M or more

A requirements

What California requires of a A licensee

Requirement	What applies to A general engineering contractors
Contractor’s license bond	A $25,000 bond is required to activate and keep the license. LLC licensees also need a $100,000 LLC employee/worker bond. How the bond works
Workers’ compensation	Required now if you have even one employee. With no employees you can file a CSLB exemption, but that option ends for every classification on January 1, 2028. Check your requirement
General liability	Required by the CSLB only for LLC licensees (at least $1 million). General contractors and owners require it anyway, usually with additional insured status.

Workers’ comp class codes and 2026 rates

Class code	Description	Advisory rate per $100 payroll
5507	Street or road construction, grading	$3.80
5506	Street or road construction, paving and surfacing	$5.60
6218	Excavation and grading N.O.C., workers paid under $45.00/hr	$5.39
6220	Excavation and grading N.O.C., workers paid $45.00/hr or more	$3.61
6307	Sewer construction, workers paid under $45.00/hr	$7.45
6308	Sewer construction, workers paid $45.00/hr or more	$4.12
6315	Water or gas mains, workers paid under $45.00/hr	$4.92
6316	Water or gas mains, workers paid $45.00/hr or more	$3.15

Source: WCIRB California, approved September 1, 2026 advisory pure premium rates and classification descriptions. These are benchmark loss costs, not quotes: each carrier files its own rates, and your experience mod and credits adjust the final premium.

These are the most common codes for A contractors, not the whole list. Bridges, dams, tunnels and pipelines each have their own. Several codes split at a $45 hourly wage, and the higher-wage code is often far cheaper, but the auditor only allows it when your payroll records show each worker’s hourly rate. Payroll that moves between codes has to be tracked by job, or it all lands in the most expensive one.

$45/hr

the wage line that splits several heavy-construction codes

Public contracts

usually mean higher limits plus bid and performance bonds

WC by 2028

every A licensee needs a policy, employees or not

Common questions

A coverage, answered

What workers’ comp class codes apply to general engineering contractors in California?

It depends on the work. Common codes are 5507 for road grading, 5506 for paving, 6218/6220 for excavation, 6307/6308 for sewer work and 6315/6316 for water and gas mains. Several split at a $45.00 hourly wage. The WCIRB’s 2026 advisory rates for these range from about $3.15 to $7.45 per $100 of payroll.

Is general liability required for an A license?

Only for LLC licensees, which must carry at least $1 million. Sole proprietors and corporations aren’t required to by the CSLB, but most general contractors and public agencies will require it before you start.

What insurance do public works contracts require?

Most public agencies ask for general liability at $1M to $2M per occurrence, an umbrella of $2M to $5M or more, commercial auto, workers’ comp, additional insured and waiver of subrogation endorsements, and bid, performance and payment bonds. Underground and environmental work often adds a pollution requirement.

Do A contractors need workers’ comp with no employees?

Not yet. An A licensee with no employees can file the CSLB exemption until January 1, 2028, when the exemption ends for every classification. Any employee means you need a policy now.

General Engineering Contractor Insurance in California

The CSLB’s definition

The A coverage stack

What California requires of a A licensee

Workers’ comp class codes and 2026 rates

A coverage, answered

Get a A quote that fits the work