Trade licensing overview · machinist
How machinist licensing works — California
How this trade is regulated in California. none-in-pilot-states The framework below describes the national pathway most machinists in California follow.
Machinists are not state-licensed in the United States. Competency is demonstrated through NIMS (National Institute for Metalworking Skills) credentials, employer-administered machining and inspection tests, or completion of a DOL-registered Machinist apprenticeship.
Machinist wages in California · BLS OES A01 2024
Wages are state-level annual figures from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program (A01 2024). Specific machinist earnings in California vary by metro area, employer type, union membership, and years of experience. Verify the current state and metro figures on the BLS OES site (bls.gov/oes).
What this trade actually looks like in California
California machining spans aerospace and space (SpaceX, Northrop, Lockheed, Boeing in Los Angeles and Long Beach), medical device in Orange County and the Bay Area, semiconductor-equipment precision work tied to Applied Materials and Lam Research, and a large general job-shop base statewide. The state has the largest and most diverse machining economy in the country, with corresponding cost-of-living pressure on take-home pay.
Where they work
Los Angeles County (El Segundo, Hawthorne, Sun Valley, City of Industry) hosts the densest aerospace and space-launch machining cluster. Orange County (Irvine, Anaheim) anchors medical-device precision work. The Bay Area (Fremont, San Jose, Livermore, Hayward) holds semiconductor-equipment, robotics, and research-instrument machining. San Diego has biotech and Navy-contractor work. Sacramento and the Central Valley run ag-equipment and food-equipment machining. The Inland Empire holds production and Tier-2 aerospace work.
Pay context
BLS OES reports a California median of $56,220 for machinists. The headline number sits below several aerospace-heavy states despite California's large nominal economy because the median includes inland and Central Valley shops; Los Angeles and Orange County aerospace and medical-device shops commonly pay 10 to 30 percent above the statewide median, but coastal cost of living absorbs much of that premium.
Training pathway
Cerritos College, Long Beach City College, Cypress College, Saddleback College, El Camino, Mt. SAC, and Las Positas all run NIMS-aligned machining programs across Southern California and the Bay Area. The California Apprenticeship Council registers a handful of machinist apprenticeships. IAM Local 1484 and other IAM lodges represent some aerospace and shipyard machinists. Direct hire from community college is the most common path.
Considerations
If you want aerospace, space, medical-device, or semiconductor-equipment work, California has more employers and more specialty depth than any other state. If you want take-home pay to clear cost of living without a long commute, the statewide median sits below several aerospace-heavy states despite a large nominal economy. Verify housing distance to the shop before accepting an offer in coastal counties.
California machinist snapshot
| MSA | Employed | Median wage |
|---|---|---|
| Los Angeles-Long Beach-Anaheim, CA | 8,820 | $50,610 |
| San Diego-Chula Vista-Carlsbad, CA | 2,430 | $63,650 |
| San Francisco-Oakland-Fremont, CA | 2,000 | $66,320 |
| Riverside-San Bernardino-Ontario, CA | 1,960 | $49,620 |
| San Jose-Sunnyvale-Santa Clara, CA | 1,830 | $62,870 |
STATE LICENSE STATUS
No pilot state (TX, CA, FL, NY, IL) issues a person-level machinist license. The U.S. Bureau of Labor Statistics classifies machinists under SOC 51-4041 and lists typical entry through long-term on-the-job training, apprenticeship, or community-college machine-tool programs (https://www.bls.gov/ooh/production/machinists-and-tool-and-die-makers.htm). Because there is no statutory license, hiring shops typically verify skill through a bench test, print-reading and GD&T questions, and (increasingly) NIMS credential records (https://www.nims-skills.org). ITAR-regulated aerospace and defense shops add employer-specific background and citizenship checks per 22 CFR 120-130; those are job requirements, not state licenses.
NIMS CREDENTIALS
NIMS (National Institute for Metalworking Skills) issues 52 stackable, ANSI-accredited credentials covering Machining Level I, II, and III; CNC Milling and CNC Turning Operator and Programmer; Tool & Die; Mold Making; Stamping; Grinding; and Industrial Technology Maintenance (https://www.nims-skills.org/credentialing). Each credential requires an online theory exam plus a performance/part-inspection component verified by a NIMS-credentialed evaluator (https://www.nims-skills.org). Machining Level I is the recognized entry credential and is used by many registered apprenticeships as a first-year benchmark. NIMS credentials are accepted as Related Technical Instruction (RTI) evidence by many DOL-registered Machinist programs (https://www.apprenticeship.gov). The International Machine Tool Manufacturers Association (IMTMA, https://www.imtma.org) and the National Tooling and Machining Association (NTMA, https://www.ntma.org) both reference NIMS as the industry-standard skills benchmark.
CNC PROGRAMMING
CNC (computer numerical control) programming is the core skill for production machining. G-code and M-code fundamentals (ISO 6983 / EIA RS-274) are the baseline language read by Fanuc, Siemens, Haas, and Mazak controls (https://www.iso.org/standard/34608.html). Most production programs are generated in CAM software: Mastercam (https://www.mastercam.com), Autodesk Fusion 360 (https://www.autodesk.com/products/fusion-360), and SolidWorks CAM (https://www.solidworks.com) are the most commonly listed in BLS machinist job postings (https://www.bls.gov/ooh/production/machinists-and-tool-and-die-makers.htm). 5-axis simultaneous programming is typical in aerospace structural and impeller work and is covered by NIMS CNC Milling Programmer Level III (https://www.nims-skills.org/credentialing). NIMS also offers a stand-alone Job Planning, Benchwork, and Layout credential that is a prerequisite for Machining Levels II and III.
APPRENTICESHIP PATHWAY
The U.S. Department of Labor registers Machinist apprenticeships under RAPIDS occupation code 0296 with a typical term of 8,000 on-the-job-training hours plus 576 hours of Related Technical Instruction; Tool and Die Maker (RAPIDS 0295) typically requires 10,000 OJT hours (https://www.apprenticeship.gov/apprenticeship-job-finder). Community-college Associate of Applied Science (AAS) degrees in Machine Tool Technology are a common parallel or substitute pathway and frequently articulate into NIMS credentials. The International Association of Machinists and Aerospace Workers (IAM, https://goiam.org) represents machinists in parts of aerospace, defense, and rail, though most U.S. production machinists work in non-union shops. NTMA and the Precision Metalforming Association (PMA) both sponsor employer-led apprenticeships registered through DOL.
ADJACENT ROLES
Tool-and-die maker is the most demanding adjacent role, requiring roughly 10,000 OJT hours and tight-tolerance grinding, heat-treat, and fixture-building experience (https://www.bls.gov/ooh/production/machinists-and-tool-and-die-makers.htm). CNC programmer roles split into shop-floor edit/offset programmers and off-line CAM programmers; NIMS CNC Milling and CNC Turning Programmer credentials cover both (https://www.nims-skills.org/credentialing). Manual mill and lathe operator positions are still common in prototype, R&D, and repair shops. Quality-control and gauge inspector roles require formal GD&T training per ASME Y14.5-2018, Dimensioning and Tolerancing (https://www.asme.org/codes-standards/find-codes-standards/y14-5-dimensioning-tolerancing); ASME also publishes Y14.5.1 Mathematical Definition of Dimensioning and Tolerancing Principles. AS9100 (aerospace) and ISO 13485 (medical device) quality-system training are often required before a machinist is cleared to run regulated parts.