Your Part Leaves the Shop and Fails Inside Someone Else's Machine — Years Later.
Protecting machine shops, staff, and customers
Machine shops make precision metal and plastic components to spec — using CNC mills, lathes, grinders, and presses — that other businesses install inside their own products, machines, and vehicles. The defining feature of the risk is downstream: a part measured in thousandths leaves the shop, gets built into a customer's assembly, and if it is out of tolerance or defective it can cause a failure or injury months or years later, with the component maker named in the suit. Layered on that is the high-severity machinery hazard of the shop floor itself. A machine shop needs coverage built around products liability with a long tail, machinery-injury workers' comp, and equipment and property. This is a corner of manufacturing insurance built for how machine shops actually get sued.
Properly structured coverage protects the shop, its workers, and its customers.
The Machine Shop's Signature Exposures
The defining exposure is products liability with a long completed-operations tail. A machined part is installed into a customer's product, machine, or vehicle, and a defect or out-of-tolerance dimension can cause a downstream failure or injury long after delivery, with plaintiff attorneys naming every party in the supply chain, including the component maker. Products-completed-operations has its own aggregate, and one bad year of critical-part claims can exhaust a thin one, so shops making safety-critical parts need dedicated limits. A distinct gap sits beside it: an out-of-spec part that injures no one but shuts down the customer's production line is pure economic loss general liability won't touch. High-severity machinery injury — amputations, lacerations, and crush injuries — and CNC equipment breakdown complete the profile.
Key Risks in Machine Shop Operations
Machine shops face exposure related to:
A defective part causing a downstream failure or injury after installation
An out-of-tolerance part shutting down a customer's production line
A products-completed-operations aggregate exhausted by critical-part claims
A lathe, mill, or press amputation, laceration, or crush injury
Mechanical or electrical breakdown of a high-value CNC machine
A metalworking-fluid or coolant spill or mist exposure
Damage to customer-owned parts held at the shop
A precision part failing downstream is what most defines the shop.
Core Coverages for Machine Shops
A properly built machine-shop program typically includes:
Products Liability & Completed Operations — Covers a defective machined part that causes injury or property damage after it leaves the shop — the core exposure, ideally with dedicated limits for safety-critical work.
General Liability — Covers third-party injury and property damage at the shop and satisfies the additional-insured requirements in customer purchase orders.
Equipment Breakdown Coverage — Covers sudden mechanical or electrical failure of CNC spindles, compressors, and lasers, which standard property excludes.
Commercial Property & Business Income — Cover machinery, tooling, raw stock, and work in process, and replace revenue during a shutdown.
Inland Marine / Bailee Coverage — Covers customer-owned parts at the shop and tools in transit between facilities.
Workers' Comp — Covers the high-severity amputation and crush injuries the machinery creates.
Pollution / Environmental Liability — Covers metalworking fluids, coolants, and solvents.
Commercial Auto & Umbrella / Excess — Cover pickup and delivery and the $2M–$5M limits automotive and aerospace customers require.
What's Commonly Overlooked
Machine-shop programs are most often weakened by:
A products-completed-operations aggregate too low or shared for critical-component work
No answer for the out-of-tolerance-but-no-injury line-shutdown economic loss
Equipment breakdown missing from a plain property policy
Pollution excluded for metalworking fluids and coolants
Workers' comp miscoded between machining and any in-house welding
The gaps that hurt most are a thin products aggregate and the uncovered economic-loss shutdown.
Real-World Claim Examples
A machined component fails months after delivery and damages the customer's equipment, with six-figure defense costs alone
An out-of-spec part injures no one but halts the customer's production line
An operator clearing a jam on an unguarded mill or lathe loses fingers or a hand
A CNC spindle motor burns out or a control board arcs on a machine worth six figures
A coolant spill or mist triggers cleanup or a respiratory claim GL excludes
Any one of these can be significant, and the downstream-failure and amputation claims are the most distinctive.
Regulatory & Licensing Context
Machine shops need general business licensing and are treated as high-hazard manufacturing, so the specialized rules are safety and environmental. OSHA machine-guarding standards require guarding every point of operation, and the lockout/tagout standard governs the moment a worker enters the guard envelope to clear a jam or perform maintenance — guarding and lockout deficiencies are frequent citations and aggravate workers' comp severity. OSHA Hazard Communication covers coolants, oils, and solvents, industry guidance addresses metalworking-fluid mist, and EPA and state hazardous-waste rules govern used cutting oils and coolant disposal.
Why Proper Placement Matters
Underwriters weigh annual sales, what the parts go into — aerospace, automotive, and medical-device end uses sharply raise products risk and required limits — CNC equipment value, whether welding or open-flame work is done in house, flammable-material storage, payroll, turnover, and prior products and comp claims. Run-of-the-mill shops place in the admitted market, while aerospace, medical, or critical-component work, high equipment values, in-house welding, or adverse losses often push products and general liability to specialty and surplus-lines markets. Securing dedicated products limits, adding equipment breakdown, and coding workers' comp correctly are the essential steps.
Our Approach
At Cory Washington & Co., we insure machine shops around the part that fails downstream — securing products and completed-operations limits sized to what your components go into, adding equipment breakdown for your CNC machines, and covering metalworking-fluid pollution and the customer parts in your care. We meet the additional-insured and high-limit requirements your automotive and aerospace customers demand. We also insure related businesses, including welding contractors, metal fabrication shops, and manufacturers.
Your part leaves the shop and fails inside someone else's machine years later, which makes a machine shop a distinct risk — we build the coverage to match it, dedicated products limits and equipment breakdown included.
All insurance descriptions on this website are provided by Cory Washington & Co. LLC strictly for general informational purposes. They are not intended to be, and should not be relied upon as, legal, financial, or insurance advice. The information presented is general in nature and does not guarantee the availability, terms, conditions, or scope of any insurance coverage. Actual coverage is determined solely by the specific policy language issued by the insurer and remains subject to underwriting approval. Nothing on this website creates or implies an agent-client relationship, binds coverage, or alters any existing policy. Cory Washington & Co. LLC expressly disclaims any liability for actions taken, or not taken, based on the content provided here. For advice regarding your particular situation, please consult directly with a licensed insurance professional at Cory Washington & Co. LLC or another qualified insurance professional, and always review your policy documents in full.
Frequently Asked Questions
How do I get machine shop insurance through Cory Washington & Co.?
Request a quote or contact our team. We start with a short conversation about your operations, analyze your exposures, then negotiate machine shop insurance across multiple carriers that compete for your account and present options with the trade-offs explained. Cory Washington & Co. LLC is licensed in all 50 states.
How much does machine shop insurance cost?
Premiums vary from business to business. The main drivers of machine shop insurance pricing are the nature of your operations, your revenue and payroll, your loss history, and the limits you carry. Rather than quote a flat figure, we negotiate across several markets and walk you through the options, so you only pay for the protection you actually need.
Who needs machine shop insurance?
Whether machine shop insurance is strictly required depends on your state, your contracts, and your lenders or clients. Even where it is not mandatory, going without it can leave serious financial gaps. We assess your exposure and any contractual requirements, then structure coverage that meets both.
What if another agency has already declined or non-renewed my coverage?
Difficult, specialty, and previously-declined placements are a core part of our work. We access excess & surplus (E&S) and specialty markets that many generalist agencies cannot, and we explain the trade-offs clearly so you can decide with confidence.
Available in all 50 states. See how requirements differ in California, Texas, Florida, New York, or choose your state.