What insurance does a welder need?
Start with general liability, then add the policies your setup calls for: workers' comp once you hire, tools cover for gear that travels, and commercial auto for a business truck.
| Coverage | What it pays for | Why it matters for welding |
|---|---|---|
| General liability | Injuries to others and damage to property you don't own | A spark starts a fire in a client's building; someone trips over your leads |
| Workers' compensation | Medical bills and lost wages for injured employees | Burns, electric shock and fume exposure; required in most states once you have employees |
| Tools and equipment (inland marine) | Theft or damage to gear away from your shop | Welders, torches, gas cylinders, grinders and fume extractors on trucks and job sites |
| Commercial auto | Accidents in vehicles your business owns | Rig trucks and trailers on public roads |
| Business owner's policy (BOP) | General liability plus your building and contents | Shops with a fixed location |
| Professional liability | Claims your work was faulty or late | Insureon's example: failure of a welded item |
| Umbrella | Extra limits above GL, auto and employer's liability | Contracts that demand higher limits |
Some jobs also need a surety bond, which guarantees the work to the client rather than insuring you. When you're ready, compare business insurance quotes and describe where you weld and what you weld on.
Mobile welder or shop: what changes?
A mobile welder adds the truck and the gear on it. A shop adds the building, its contents and the work that leaves it.
| Mobile welder | Welding or fab shop | |
|---|---|---|
| Vehicle | Commercial auto for the rig truck; hired and non-owned auto if you drive a personal vehicle for work | Commercial auto if the business owns vehicles |
| Equipment | Tools and equipment cover, since commercial property only covers your building and what's in it | Commercial property or a BOP for machines kept at the shop |
| Liability focus | Fire and damage at the client's site | Customers on your premises, and products or welds that fail later |
Shops can also add business income cover, which The Hartford describes as replacing lost income if a covered fire forces you to close for a while. Insureon points out that items worth more than $2,500 may need to be listed separately on a tools policy. Ask how a welder mounted on the truck is covered: as part of the vehicle under the auto policy, or as equipment under the tools policy. Get the answer in writing so the gap doesn't show up after a theft.
Does general liability cover a fire I start while welding?
General liability is the policy that pays when your work damages someone else's property, and The Hartford lists a fire started while welding as a typical welding claim. Whether a given fire is covered depends on your policy's wording, so read it for hot-work terms before the first job.
Ask each insurer:
- Does the policy have a hot-work exclusion, or conditions such as a permit or fire watch that must be met for a fire claim to be paid?
- Does it cover damage to the part of the property you are working on, or only to property around it?
- Are any job types excluded or rated separately (tanks, roofs, occupied buildings, oil and gas sites)?
- What limits will the general contractors and property owners you work for require?
The safety rules give you the starting point. Under OSHA's welding fire-prevention rule, the area must be inspected and work authorized, preferably with a written permit, and a fire watch is required in several situations, including when combustible material sits within 35 feet. That watch must stay for at least half an hour after the work ends. Travelers, an insurer, sets a higher bar in its hot work guidance for construction sites: permits valid for one shift and a continuous fire watch for at least 60 minutes afterward.
Keep the permits and fire-watch records for each job. If a fire claim comes in, they show what you did.
What workers' comp class do welders use, and what does it cost?
Specialist welders have their own classification. In states that use NCCI codes, that class is 3365, "Welding or Cutting NOC & Drivers," and its rate sits far above office work and in the middle of the construction trades.
Which class applies depends on what your business does, not only on the fact that you weld. The NCCI Scopes Manual, as quoted by the South Dakota Supreme Court in a 2015 decision, says:
- 3365 is for specialist contractors engaged only in welding or cutting, in a shop or outside.
- A business that also does construction work is assigned the construction class for that work.
- In that case, the court put a trailer manufacturer's welding back under the machine shop class (3632), not 3365.
That wording is from 2015, and your state's manual may differ. Check your code with the class code lookup, and expect it to be checked again at the year-end payroll audit.
To see where welding sits against other trades, here are Alaska's 2026 assigned-risk rates (the insurer of last resort, not the open market):
| NCCI class | Work | Rate per $100 of payroll |
|---|---|---|
| 8810 | Clerical office staff | $0.200 |
| 5190 | Electrical wiring | $1.630 |
| 5183 | Plumbing | $2.131 |
| 3365 | Welding or cutting | $2.596 |
| 5551 | Roofing | $10.420 |
Source: Alaska assigned-risk rate pages, effective January 1, 2026. Rates differ by state and insurer; your claims history adjusts them through your experience mod.
Most states require workers' comp once you have employees. Texas lets private employers opt out, South Dakota has no mandate and Wyoming requires it only for listed hazardous work. In North Dakota, Ohio, Washington and Wyoming, you buy it from the state fund and add stop-gap employer's liability. Details: workers' comp requirements by state.
Do I need commercial auto for a welding rig?
If the business owns the truck, yes in most states. Insureon and ERGO NEXT both note that a personal auto policy may not cover business driving or hauling your gear.
Commercial auto pays for accidents, injuries and damage involving the truck. If you use your own car or a rented vehicle for work, look at hired and non-owned auto instead. Among Insureon's construction customers, including welders, commercial auto runs a median $268 a month. More on choosing limits: commercial auto insurance guide.
Who writes welding insurance?
Not every insurer does. The Hartford's welding page says it doesn't offer coverage for welders and sends visitors to a third-party marketplace. ERGO NEXT does sell welder policies, and says its general liability for welders includes contractors' errors and omissions, with tools and equipment cover available as an add-on.
QuoteSweep doesn't yet publish carrier appetite for welders, because we haven't verified it against each insurer's own underwriting pages. When you ask for quotes, describe the work exactly: mobile or shop, structural or repair, and any work on tanks, pipelines or occupied buildings. You'll hear from insurers that want it.
How much does welding insurance cost?
Among Insureon's welding customers, the median general liability premium is $167 a month, or $2,000 a year.
| Policy | Median per month | Median per year | Whose customers |
|---|---|---|---|
| General liability | $167 | $2,000 | Welders |
| Workers' compensation | $175 | $2,101 | Construction businesses, including welders |
| Tools and equipment | $42 | $505 | Construction contractors, including welders |
| Commercial auto | $268 | $3,212 | Construction businesses and welders |
| Business owner's policy | $125 | $1,503 | Construction contractors |
| Professional liability | $67 | $808 | Construction businesses, including welders |
Source: Insureon, welding insurance cost, read October 10, 2026 (page updated August 13, 2026). These are Insureon's figures for its own customers: medians of policies bought through Insureon. Insureon's headings call them averages. Its typical general liability policy has $1 million per occurrence and $2 million aggregate limits with a $500 deductible.
Insureon says your price moves with the type of projects (large commercial work costs more), employees and payroll, equipment value, years in business, location, limits and claims history.
What will a general contractor ask for?
Whatever the subcontract's insurance clause says, so read it before you quote the job. It may ask for a certificate of insurance showing general liability, workers' comp and auto, set minimum limits, require an umbrella, and name the contractor as an additional insured. On construction sites the general contractor usually assigns the person who issues hot-work permits, per Travelers' guidance. Insureon notes that welding contractors may also need insurance to sign a client contract, lease a space or get a business loan.
Our guides for general contractors and construction subcontractors cover how those requirements flow down. More on the form itself: certificate of insurance (COI).
Frequently asked questions
What insurance does a welder need?
Most welders need general liability, workers' comp once they hire, tools and equipment cover for gear that travels and commercial auto for a business truck. Shops add property or a business owner's policy, and some contracts call for an umbrella or a surety bond.
How much does welding insurance cost?
Among Insureon's welding customers, the median general liability premium is $167 a month. Insureon's medians for construction businesses including welders are $175 a month for workers' comp, $42 for tools and equipment and $268 for commercial auto.
Does general liability cover a fire caused by welding?
General liability is the policy for damage you cause to other people's property, and fire is a typical welding claim. Read your policy for hot-work exclusions or conditions, such as a permit or fire watch, and ask the insurer to confirm coverage in writing.
What is the workers' comp class code for welders?
In NCCI states, specialist welding contractors use class 3365, "Welding or Cutting NOC & Drivers." Welding that is part of construction or manufacturing work goes under that work's own class, so check your code with your insurer.
Do mobile welders need commercial auto insurance?
If the business owns the truck, yes in most states, because personal auto policies may not cover business use. If you drive a personal or rented vehicle for work, ask about hired and non-owned auto coverage.
How long does OSHA require a fire watch after welding?
At least half an hour after welding or cutting ends, where a fire watch is required. Travelers' risk control guidance for construction sites recommends at least 60 minutes.
Ready to compare? Describe your welding work, your truck and your gear, then compare business insurance quotes.