Class Codes | Description |
| 0005 | Farm - Nursery Employees & Drivers |
| 0006 | Animal Raising |
| 0008 | Farm - Gardening |
| 0011 | Farm - NOC |
| 0016 | Farm - Orchards & Drivers |
| 0030 | Sugar Cane Plantation |
| 0034 | Poultry & Egg Production |
| 0035 | Farm - Florist |
| 0036 | Farm - Dairy (All Employees) |
| 0037 | Farm - Field Crops |
| 0042 | Landscape Gardening and Maintenance & Drivers |
| 0050 | Farm Machinery Operations-By Contractor/Right of Way Clearing |
| 0079 | Farm - Berry or Vineyard |
| 0083 | Farm - Cattle or Livestock Raising NOC & Drivers |
| 0106 | Arborist, Tree Services & Mechanical R-O-W Clearing |
| 0113 | Farm - Fish Hatchery |
| 0153 | Lawn or Shrub Spraying |
| 0170 | Farm - Animal Raising/Animal Raising (Fur Bearing) |
| 0251 | Irrigation Works Operation |
| 0400 | Cotton Compressing |
| 0401 | Cottin Gin Operation |
| 1165 | Mining NOC-Not Coal-Surface |
| 1320 | Oil & Gas Lease Operator - All Operations and Drivers |
| 1321 | Oil Production by Contract |
| 1322 | Oil or Gas Well Cleaning - No Drilling |
| 1604 | Quarry - Dimension Stone |
| 1605 | Excavation - Rock |
| 1624/1625/1655 | Quarry Operations |
| 1701 | Cement Mfg/Plaster Mill |
| 1710 | Stone Crushing |
| 1803/1807/1808 | Stone, Cutting or Polishing NOC |
| 1924 | Wire Drawing or Cable Mfg - Not Iron or Steel |
| 1925 | Die Cast Mfg |
| 2014 | Grain Milling (Feed Mfg)/Wood Flour Mfg |
| 2022 | Sugar Cane Milling - All Operations |
| 2070 | Creamery or Dairy & Milk Hauling |
| 2081 | Stockyard & Slaughtering |
| 2089 | Packing House - All Operations |
| 2095 | Meat Products Mfg |
| 2105 | Fruit/Vegetable Packing |
| 2111 | Cannery NOC |
| 2121 | Brewery |
| 2130 | Spirituous Liquor Distillery |
| 2143 | Fruit Juice Mfg/Winery |
| 2157 | Bottling/Carbonated Beverage Mfg - NOC |
| 2570 | Mattress or Box Spring Mfg |
| 2710 | Sawmills |
| 2714 | Veneer Mfg |
| 2731 | Planning or Molding Mill |
| 2735 | Furniture/Pencil (Wood) Stock Mfg |
| 2740/2741 | Cooperage/Barrel Mfg |
| 2759 | Pallet, Box or Box Shook Mfg, Wooden/Skid Mfg - Wood |
| 2790 | Wood Carving - By Hand or Machine |
| 2797 | Mobile or Trailer Home Mfg |
| 2802 | Truss, Door, Sash, Fence Mfg |
| 2804 | Casket or Coffin Mfg or Assembly - Wood |
| 2812 | Cabinet Works |
| 2841 | Wood Turned Products Mfg NOC |
| 2881 | Furniture Assembly - Wood-From Manufactured Parts |
| 2883 | Furniture Mfg, Wood NOC |
| 2915 | Veneer Products Mfg/Plywood Mfg |
| 2916 | Plywood Mfg/Veneer Products Mfg, No Veneer Mfg |
| 2960 | Wood Preserving & Drivers/Prefabricated Log House or Cabin Mfg |
| 3004 | Iron or Steel: Mfg, Steelmaking: Rolling Mill |
| 3018 | Iron or Steel: Mfg, Rolling Mill |
| 3022 | Pipe or Tube Mfg NOC |
| 3027 | Pipe or Tube Mfg - Lead |
| 3028 | Pipe or Tube Mfg - Iron or Steel, NOT Cast Iron |
| 3030 | Iron or Steel: Fabrication; Iron or Steel Works; Shop, Stuctural |
| 3040 | Iron or Steel: Fabrication, Iron Works; Shop, Ornamental |
| 3041 | Iron or Steel: Fabrication, Iron Works; Shop, Decorative or Artistic & Foundries |
| 3042 | Elevator or Escalator Mfg |
| 3064 | Sign Mfg; Metal or Neon |
| 3066 | Sheet Metal Work - Shop - Door, Door Frame or Sash Mfg |
| 3069/3076 | Sheet Metal Products Mfg |
| 3075 | Door, Door Frame or Sash Mfg - Wood-Metal Covered |
| 3081 | Foundry - Ferrous |
| 3082 | Car Wheel Mfg - Railroad; Foundry; Steel Castings |
| 3085 | Foundry - Non-Ferrous |
| 3086 | Foundry - Malleable Iron |
| 3110 | Tool Mfg - Drop/Machine Forged NOC: Forging |
| 3111 | Blacksmith/Pipe Bending & Cutting |
| 3113 | Tool Mfg - Not Drop or Machine Forged - NOC |
| 3114/3126 | Tool Mfg - Drop/Machine Forged - NOC |
| 3118 | Saw Mfg |
| 3122 | Cutlery/Pen Point Mfg |
| 3132/3145 | Nut, Bolt, Screw Mfg |
| 3146 | Hardware Mfg NOC |
| 3188 | Pkumbers' Supplies Mfg NOC |
| 3240/3241/3257 | Cable or Wire Goods Mfg |
| 3307 | Heat Treating - Metal |
| 3365 | Welding or Cutting |
| 3372 | Electroplating |
| 3373 | Galvanizing or Tinning, Not Electolytic |
| 3400 | Metal Stamped Good Mfg NOC |
| 3507 | Construction or Agricultural Machinery Mfg |
| 3612 | Hydraulic or Pneumatic Device/Pump Mfg |
| 3620 | Tank Building - Metal; Ship Building Iron or Steel/Boilermaking |
| 3629 | Precision Machined Parts Mfg |
| 3632 | Machine Shop NOC |
| 3634 | Valve Mfg |
| 3635/3638 | Gear or Ball Bearing Mfg |
| 3724 | Machinery or Equipment Erection or Repair NOC & Drivers |
| 3726 | Tank Erection, Boiler Installation and Repair |
| 3803/3807/3808 | Automobile Parts Mfg |
| 3821 | Automobile Parts Dismantling |
| 3822/3824 | Automobile, BUs, Truck or Trailer Body Mfg |
| 4000 | Sand, Gravel , Shale or Clay Digging |
| 4021 | Brick, Clay, or Concrete Products Mfg NOC |
| 4034 | Concrete Products Mfg |
| 4452/4459/4484 | Plastics Mfg |
| 4484 | Plastics Mfg - Molded Products NOC |
| 4557 | Plastics Mfg - Molded Products NOC |
| 5086 | Sheet Metal |
| 5184 | Asbestos Contractor |
| 5192 | Vending Machine Installation, Service, Repair & Drivers |
| 5496 | Cleaning or Renovating Building Exteriors |
| 5551/5545 | Roofing - All Kinds |
| 5705 | Salvage Operations - No Wrecking or Structural Operations |
| 6204 | Well Drilling - Water & Drivers |
| 6205 | Sulphur Producing - All Employees |
| 6206 | Oil & Gas Well - Acidizing, Cementing |
| 6213 | Oil & Gas Well - Specialty Tool Operation NOC, By Contractor, All Employees |
| 6214 | Oil & Gas Well - Perforating of Casing - All Employees |
| 6215 | Drilling - Lead or Zinc Prospect |
| 6216 | Oil/Gas Lease Work - NOC - Natural Gas, By Contractor |
| 6236 | Oil and Gas Well: Installing or Recovery of Casing |
| 6237 | Oil and Gas Well: Instrument Logging or Survey Work |
| 6252 | Caisson Work - All Operations to Completion |
| 6801 | Boatbuilding - Wood NOC - US Act |
| 6811 | Boatbuilding - Wood NOC - State Act |
| 6823/6824/6825 | Boat or Shipbuilding and Repair - US Act |
| 6826/6836 | Marina - Coverage US Act/State Act |
| 6827/6828 | Ship or Boatbuilding - US Act |
| 6834/6835 | Boatbuilding or Repair - State Act |
| 6838 | Boatbuilding or Repair - Fiberglass Only - State Act |
| 3843/6845/6846 | Shipbuilding |
| 6854 | Shipbuilding - Iron or Steel - NOC State Act |
| 6872 | Ship Cleaning/Ship Repair Conversion - All Operations US Act |
| 6873/6876 | Diving |
| 6874 | Painting; Ship Hulls/Ship Scaling - US Act |
| 6882 | Ship Cleaning/Ship Conversion- All Operations State Act |
| 6884 | Painting; Ship Hulls/Ship Scaling - State Act |
| 7038 | Boat Livery |
| 7046 | Vessels- Not Self-Propelled- Program I |
| 7201 | Livery or Boarding Stable - Not Sales Stables |
| 7219 | Trucking NOC; Tow Trucks (no Repo Work); Suspended Scaffold Installation and Repair |
| 7222 | Trucking; Oil Field Equipment, All Employees; Tow Trucks (No Repo Work) |
| 7223 | Trucking: Tow Trucks - Not including Repo Work |
| 7228 | Trucking: Local Hauling Only; Tow Trucks (No Repo Work) |
| 7229 | Trucking: Long Distance Hauling;l Tow Trucks (No Repo Work) |
| 7230 | Trucking: Palletized Freight Only |
| 7232 | Trucking: Mail, Parcel & Package Delivery Under Contract |
| 7309 | Stevedoring NOC |
| 7313 | Coal/Ore Dock Operations & Stevedoring |
| 7317 | Stevedoring: By Hand or Hand Trucks Exclusively |
| 7327 | Stevedoring; Containerized Freight |
| 7333 | Dredging- All Types Program I |
| 7350 | Freight Handling NOC-US Act |
| 7360 | Freight Handling NOC State Act |
| 7380 | Drivers NOC |
| 7390 | Beer or Ale/Wine Dealer - Wholesale & Driver |
| 7394 | Diving, Salvage, Wrecking - Marine Program I |
| 7500/7502 | Gas Company - Gas Work and Sales |
| 7515 | Gas Pipeline Operations |
| 7520 | Waterworks Operation - Not Municipality Operated |
| 7590 | Garbage Works - Commercial Bulk - Non-Residential |
| 8021 | Store: Meat, Fish, or Poultry Dealer - Wholesale |
| 8106 | Iron or Steel Merchant |
| 8107 | Machinery Dealer NOC - Store or Yard |
| 8111 | Plumbers' Supplies Dealer |
| 8113 | Pipe Reconditioning- Oil |
| 8116 | Farm Machinery Dealer |
| 8204 | Bldg Material Yard & Local/Oil-Gas Well Supplies & Equip Dealer (Used) |
| 8209 | Vegetables Packing |
| 8215 | Feed, Fertilizer, Hay or Grain Dealer - No Mfg |
| 8232 | Lumberyard Wholesale only/Redi-Mix Concrete & Drivers |
| 8234 | Wood Preserving |
| 8235 | Sash, Door or Assembled Millwork Dealer & Drivers |
| 8236 | Ready Mix Concrete Dealer |
| 8265 | Iron and Steel Scrap Dealer |
| 8279 | Stable or Breeding Farm/Kennel & Drivers |
| 8288 | Livestock Dealer or Commission Merchant & Salespersons |
| 8295 | Cotton Merchant/Storage |
| 8304 | Grain Elevator Operation |
| 8350/8399 | Gasoline Dealer |
| 8399 | Truck or Trailer Body Repair |
| 8500 | Metal Scrap Dealers |
| 8606/8607 | Geophysical Exploration - Seismic |
| 8709 | StevedoringL Talliers, Check Clerks- US Act |
| 8719 | Stevedoring |
| 8720 | Inspection of Risks |
| 9102 | Lawn Maintenance |
| 9170 | Chimney Cleaning |
| 9402 | Street/Tank Cleaning |
| 9403 | Garbage Collection - No Residential |
| 9501 | Sign Painting or Lettering - Inside of Buildings, Shop Only |
| 9505 | Auto, Bus, Truck, or Trailer Body Mfg: Painting |
| 9521 | Carpet-Flooring/Window Trimming - Sales/Installation |
| 9558 | Sign Painting or Lettering |
