A machine shop's most likely serious loss is a hand. Its most expensive loss is a part that left the building, got installed into something bigger, and failed there. Those are two completely different insurance conversations, and most shops we look at have thought hard about the first one and barely at all about the second.
Between Statesboro, Savannah, Dublin, Vidalia, Swainsboro and the Augusta corridor there is a real density of small and mid-size machining operations — job shops feeding the port, the paper and packaging plants, the poultry and food processors, the utility and energy contractors, and a growing amount of aerospace and defense subcontracting. They are almost all owner-run, they are almost all capital-heavy relative to headcount, and they are one of the classes where the difference between a decent program and a bad one is largest.
If you also fabricate structural or ornamental steel, weld in the field, or run a sheet metal department, those are separate conversations. For the product side generally, start with product liability for manufacturers. For the comp baseline, see Georgia manufacturing workers' comp.
| Line | What drives it on a machining account |
|---|---|
| Workers comp | Usually the biggest premium line. Lower-middle of the manufacturing ladder — below foundry, structural steel and sawmill, above light assembly — because the hazard is point of operation, not weight or heat. |
| Products / GL | The biggest potential loss. Rated on receipts, so sales growth raises the premium whether or not you hire. |
| Property + equipment breakdown | Unusually heavy for the size of the business. The machines are frequently worth more than the building. See equipment breakdown. |
| Business income | The line that decides whether the shop survives a fire. Driven by machine lead times, not by a formula. |
| Commercial auto | Lighter than a contractor, but delivery trucks and outside service calls still matter — check hired and non-owned. |
| Cyber | Underrated here. CAD/CAM files, customer prints under NDA, and shops targeted through wire-transfer fraud on large invoices. |
Classification systems generally separate a machine shop doing one-offs, prototypes, repairs and short runs to customer prints from a manufacturer of machined parts producing in repeating quantities. Both are separate again from tool-and-die, screw machine products, foundry and casting, structural or ornamental metal, sheet metal, heat treating, and plating or finishing.
The classification follows what the operation actually is, not what the sign says. That is why shops that started as repair benches and grew into production — or production shops that kept a repair bench for a legacy customer — are so often carrying a class that was accurate six years ago. Check it in both directions; it can run either way.
Machining concentrates its severity into a small number of point-of-operation events — amputation, crush, degloving. The mechanisms are so consistent that underwriters essentially have a checklist:
Two programs do most of the work in an underwriter's evaluation: machine guarding (fixed and interlocked guards, two-hand controls, presence sensing and light curtains, and a written rule that nothing runs with a guard defeated) and hazardous energy control (documented lockout/tagout with machine-specific procedures, individual locks, annual procedure review, training that includes affected employees and contractors).
Underneath that sits the frequency layer that actually drives the experience modifier: chips in eyes, deburring lacerations, burns from hot parts and swarf, hearing loss, and backs and shoulders from lifting billets, castings, fixtures and tooling. Because the mod responds to claim duration more than count, a return-to-work program moves the number more than shopping does — see the mod guide and what to expect at an audit. Guarding, lockout/tagout, hearing conservation and recordkeeping requirements are set by federal and state authority and are amended.
Building to a customer's drawing puts a shop in a materially better position than designing the part — but it is not a defense on its own. It does nothing for you if the part did not conform to the print, if the material certification does not support what shipped, if a process was substituted without written approval, or if the shop saw an obvious problem in the specification and stayed quiet.
The exposure that matters is the gap between the part and everything the part was installed into. A standard liability form excludes damage to your own product and your own work, so the machined component is normally not the covered item. What the policy answers for is bodily injury and damage to other property caused by that part. That is the whole reason a two-hundred-dollar component can generate a seven-figure claim once it is inside an engine, a press, an aircraft assembly, a medical device or a piece of energy equipment.
Three items that surprise people:
Carriers price the presence of a written program here more than the absence of claims, because in occupational illness the claims arrive far too late to be a useful underwriting signal. Exposure limits and surveillance requirements are set by federal and state authority and are amended — confirm with the relevant agency.
Three property exposures compound in a way that is specific to this trade.
It starts in predictable places: oil-saturated chip and swarf accumulation; oil mist deposited in ducting and across the ceiling; a tool crash or dry cut igniting a coolant fire inside an enclosed CNC; hot work; and the special case of fine titanium, magnesium or aluminum swarf, which is a combustible metal that ordinary agents can make worse. Shops that grind or polish also carry a combustible-dust question.
Spindle failure, control and drive electronics, transformers and switchgear, compressors and chillers — mechanical, electrical and pressure failures that the standard property form excludes and that an equipment breakdown endorsement exists to pick up.
A five-axis machining center is not a stock item. Replacement lead time is measured in many months, not weeks. A shop whose capability rests on one or two machines can lose its capacity, then its qualification on a customer's part number, then the customer. Build business income and extra expense limits and the period of restoration from actual lead times on your two most critical machines, and look hard at contingent business income if one customer or one specialty supplier dominates. Also schedule the things that are not obviously “equipment”: tooling, fixtures, patterns, dies, gages, work in process, and customer-owned material sitting on your floor, which is a care-custody-and-control question your GL will not answer — see inland marine.
We are an independent agency in Statesboro placing every line a manufacturer carries through one person. On a machining account the first review is short and specific: whether the classification still matches what the shop actually does, which industries the parts end up in and whether any of them are appetite decisions rather than pricing ones, whether the business income limit was built from machine lead times or from a percentage, and what the shop's own quotation terms say about liability. Those four answers take about twenty minutes and are worth more than a quote. More on how we work: Statesboro and Savannah. If you bid public, utility or federal work that requires a bond, our sister brand BettrBonds handles that side.
Send your comp declarations with classifications and payroll, your GL declarations with the products aggregate, your property schedule with equipment values, and a copy of your standard quotation terms. We'll tell you whether the class matches the operation, whether any end-use industry on your customer list is an appetite problem waiting for a renewal, whether your business income limit survives a twelve-month machine lead time, and where your own paperwork is giving away protection you could keep for free.
Get a free coverage reviewMachining sits in the lower-middle of the manufacturing comp ladder — generally below foundry, structural steel fabrication and sawmill work, above light assembly and warehousing — because the hazard is concentrated in point-of-operation contact rather than weight, height or heat. Comp is usually the largest premium line, rated per $100 of payroll. GL including products carries the largest single potential loss and is rated on receipts, so sales growth raises the premium whether or not headcount moves. Property and equipment breakdown are heavy relative to the size of the business because the machines routinely outvalue the building. The variables: which industries the parts serve (aerospace, defense, medical, energy and automotive underwrite very differently), whether the shop builds only to customer print or also designs and assembles, receipts and customer concentration, equipment age and guarding, whether finishing operations run in-house, and the losses read claim by claim.
Frequently yes. Classification systems generally separate job-shop, repair and prototype work from repeating production manufacturing, and both from tool-and-die, screw machine products, foundry and casting, structural or ornamental metal, sheet metal, heat treating and plating. The class follows what the operation actually is, not the company name, which is why shops that grew from repair into production — or kept a repair bench after moving to production — so often carry a class that was accurate years ago. It can be wrong in either direction, so it is worth checking rather than assuming. In-house welding, heat treating, plating, anodizing or painting departments are commonly separately classified or excluded from the main class, and where records do not support a division, payroll is generally assigned to the highest-rated class applicable.
Point-of-operation contact — amputation, crush and degloving to hands, fingers and forearms. The recurring mechanisms are reaching in to clear a chip or take a measurement before rotation stops, running with a guard removed or an interlock bypassed for setup, a workpiece or chuck jaw thrown from a lathe, entanglement of gloves, sleeves, jewelry, hair or a rag in rotating stock, hand feeding on a press or shear, and unexpected startup during setup or maintenance where energy was not isolated. Machine guarding and a documented lockout/tagout program with machine-specific procedures do most of the work in an underwriter's evaluation. Underneath sits the frequency layer: chips in eyes, deburring lacerations, burns from hot parts and swarf, hearing loss, and lifting injuries from billets, castings, fixtures and tooling.
Building to print is a materially better position than designing the part, but it is not a defense by itself — not if the part did not conform to the print, if the material certification does not support what shipped, if a process was substituted without approval, or if an obvious specification defect went unmentioned. The serious exposure is the gap between the part and what it was installed into. The standard liability form excludes damage to your own product and work, so the component itself is normally not covered; what the policy answers for is bodily injury and damage to other property caused by that part, which is how a two-hundred-dollar component produces a seven-figure claim inside an engine, press, aircraft assembly, medical device or energy equipment. Recall and withdrawal costs generally require separate coverage, impaired property provisions can remove loss-of-use claims where nothing is physically injured, and claims arrive years after shipment.
Metalworking fluids first: skin contact produces dermatitis and folliculitis, the highest-frequency occupational illness in machining, while mist inhalation has been associated with respiratory effects including asthma and, in poorly maintained systems, hypersensitivity pneumonitis. Carriers ask about mist collection, sump management and biocide use, concentration testing, change intervals and whether skin complaints are tracked. Then metal dust and fume, which depends entirely on the alloy — beryllium copper, hexavalent chromium from stainless, nickel alloys, manganese in weld fume, lead in free-machining brass, and titanium or magnesium in fine form each carry specific controls and sometimes medical surveillance, and the common failure is adding an alloy for a new customer without revisiting controls. Then noise, which is cumulative and produces hearing-loss claims at the end of a career. Carriers price the written program more than the claim history, because occupational illness claims arrive too late to be a signal.
Because the machines outvalue the building and cannot be rented. Fire starts in oil-saturated chip and swarf accumulation, oil mist in ducting, a tool crash igniting coolant inside an enclosed CNC, hot work, or fine titanium, magnesium or aluminum swarf, which is a combustible metal that ordinary agents can worsen. Equipment breakdown covers the mechanical, electrical and pressure failures the standard property form excludes — spindles, drives and controls, transformers and switchgear, compressors and chillers. The decisive exposure is the time element: a five-axis machining center is not a stock item, replacement lead time runs many months, and a shop can lose capacity, then its qualification on a part number, then the customer. Build business income and the period of restoration from real lead times, and consider contingent business income where one customer or supplier dominates.
A description of operations splitting job-shop, repair and prototype work from repeating production; receipts by industry served, flagging aerospace, defense, medical device, pharmaceutical, energy, marine, firearms, automotive safety or nuclear content, several of which are appetite decisions rather than pricing ones; the share built strictly to customer print versus work where the shop designs, specifies material or process, assembles or advises; customer concentration in the top one, three and five accounts; a machine schedule with make, model, year, replacement cost, manual or CNC, and realistic replacement lead time on the two most critical; the machine guarding policy and lockout/tagout program with machine-specific procedures; the metalworking fluid program, mist collection, hearing conservation and any medical surveillance; hot work permits, chip and swarf handling, and whether titanium or magnesium is machined; sprinkler and detection status including inside machine enclosures; any in-house welding, heat treating, plating, anodizing or coating; quality certifications, material traceability and first-article practice; the shop's own quotation terms including limitation of liability and consequential damages disclaimers; values for tooling, fixtures, dies, work in process and customer-owned material on premises; and three to five years of losses with injury claims separated from product claims.
For general information only. Not legal advice and not a quote or contract of insurance. Policy forms, endorsements, sublimits and exclusions vary by carrier and form edition — damage to your product and damage to your work exclusions, impaired property provisions, products and completed operations aggregates, recall and withdrawal coverage, professional services and design exclusions, care custody and control provisions, employer's liability limits under Part Two, equipment breakdown endorsements, business income waiting periods, coinsurance and period of restoration wording, contingent business income terms, inland marine and customer-owned property terms, and umbrella schedules of underlying insurance must all be read as actually issued. Workers' compensation classification, payroll allocation, overtime treatment, officer inclusion and exclusion, and premium audit rules are set by the applicable rating bureau and state authority; machine guarding, hazardous energy control, hearing conservation, respiratory protection, hazardous substance exposure limits and medical surveillance, combustible dust and injury and illness recordkeeping requirements are set by federal and state authority; product liability, warranty and contractual indemnity obligations are set by state statute and case law. All are amended over time — confirm your obligations with the relevant agency and qualified counsel. Coverage subject to policy terms, conditions, exclusions and carrier appetite.