These industries have been designated the highest hazard industries by
Cal/OSHA:
| Foundation, Structure and Building Exterior Contractors (NAICS 2381) |
| Drywall and Insultation Contractors (NAICS 23831) |
Finish Carpentry Contractors (NAICS 23835) |
| Sugar and Confectionery Product Manufacturing (NAICS 3113) |
| Frozen Food Manufacturing (NAICS 31141) |
Dairy Product (except frozen) Manufacturing (NAICS 31151) |
| Animal Slaughtering and Processing (NAICS 3116) | |
Bakeries and Tortilla Manufacturing (NAICS 3118) |
| Soft Drink and Ice Manufacturing (NAICS 31211) |
| Wood Product Manufacturing (NAICS 321) |
| Stationery Product Manufacturing (NAICS 32223) |
| Steel Product Manufacturing from Purchased Steel (NAICS 3312) |
Nonferrous Metal Foundries (NAICS 33152) |
| Metal Window and Door Manufacturing (NAICS 332321) |
Special Die and Tool, Die Set, Jig, and Fixture Manufacturing (NAICS 333514) |
| Ship and Boat Building (NAICS 3366) |
Air Transportation (NAICS 481) |
| Transit and Ground Passenger Transportation (NAICS 485) |
| Support Activities for Water Transportation (NAICS 4883) |
| Warehousing and Storage (NAICS 493) |
| Couriers and Messengers (NAICS 492) |
| Water, Sewage and Other Systems (NAICS 2213) |
| Waste Management and Remediation Services (NAICS 562) |