Workers' comp class code · Industrial & Other
Class code 3632 — Machine Shop
Machining, milling, and fabrication of metal parts using powered equipment.
This classification applies to machine shops that cut, mill, drill, turn, and grind metal parts to precise tolerances using powered equipment such as lathes, milling machines, CNC centers, and grinders. Work is typically performed to customer specifications on a job-shop or contract-manufacturing basis, producing components for other manufacturers rather than finished consumer products.
Day-to-day operations revolve around setting up stock, running cutting tools, deburring and inspecting finished parts, and moving material between stations. Payroll usually includes machine operators, setup technicians, quality inspectors, and shop supervisors, along with material handlers who feed the floor.
Injury exposure centers on point-of-operation contact with cutting tools, entanglement in rotating spindles or chucks, metal chips and coolant causing lacerations or skin irritation, and repetitive strain from manual loading. Proper machine guarding, lockout/tagout discipline, and eye and hand protection are the main levers for controlling both frequency and severity here.
What code 3632 typically includes
- CNC and manual lathe, mill, and grinder operators
- Setup and tooling technicians
- Quality control and dimensional inspection staff
- Deburring, cleaning, and finishing work performed in-house
- Shop supervisors and material handlers moving stock between machines
Codes this one gets confused with
3179 — Machine Shop — Manufacturing NOC
Used when a shop's machining work doesn't fit a more specific manufacturing description; 3632 is the standard job-shop machining code.
See code 31793018 — Metal Stamping
Stamping presses sheet metal into shape rather than removing material by cutting, so the exposures and code differ.
See code 3018What this code means for your premium
Machine shop work generally falls in the middle of the manufacturing rate range — higher than office or light assembly work, but well below classifications involving hot work or heavy material handling.
Estimate your premiumClassification is not final until a carrier assigns it. Code numbers, wording and exceptions vary by state and rating bureau — several states run their own bureaus. This page is general reference written in our own words; your carrier's underwriter assigns the code based on your actual operations and payroll records.
Questions about code 3632
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