| R-C-E | Pressure Vessel Inspectors |
| R-C-A | Civil Drafters |
| R-C-I | Electronic Drafters |
| R-C-I | Mechanical Drafters |
| R-C-I | Calibration and Instrumentation Technicians |
| R-C-I | Surveying Technicians |
| R-C-I | Geological Data Technicians |
| R-C-E | Couriers and Messengers |
| R-C-E | Tire Repairers and Changers |
| R-C-E | Mechanical Door Repairers |
| R-C-E | Electric Meter Installers and Repairers |
| R-C-E | Valve and Regulator Repairers |
| R-C-E | Meter Mechanics |
| R-C-E | Heating and Air Conditioning Mechanics |
| R-C-E | Refrigeration Mechanics |
| R-C-E | Home Appliance Installers |
| R-C-E | Gas Appliance Repairers |
| R-C-E | Maintenance and Repair Workers, General |
| R-C-E | Extruding, Forming, Pressing, and Compacting Machine Setters and Set-Up Operators |
| R-C-E | Extruding, Forming, Pressing, and Compacting Machine Operators and Tenders |
| R-C-I | Furnace, Kiln, Oven, Drier, and Kettle Operators and Tenders |
| R-C-E | Materials Inspectors |
| R-C-E | Mechanical Inspectors |
| R-C-I | Precision Devices Inspectors and Testers |
| R-C-I | Electrical and Electronic Inspectors and Testers |
| R-C-E | Production Inspectors, Testers, Graders, Sorters, Samplers, Weighers |
| R-C-A | Silversmiths |
| R-C-A | Model and Mold Makers, Jewelry |
| R-C-E | Radio Operators |
| R-C-I | Radiologic Technicians |
| R-C-I | Medical Equipment Preparers |
| R-C-E | Forest Fire Inspectors and Prevention Specialists |
| R-C-E | Cooks, Fast Food |
| R-C-S | Cooks, Institution and Cafeteria |
| R-C-E | Food Preparation Workers |
| R-C-E | Combined Food Preparation and Serving Workers, Including Fast Food |
| R-C-E | Dishwashers |
| R-C-E | Janitors and Cleaners, Except Maids and Housekeeping Cleaners |
| R-C-S | Maids and Housekeeping Cleaners |
| R-C-E | Pest Control Workers |
| R-C-E | Pesticide Handlers, Sprayers, and Applicators, Vegetation |
| R-C-E | Motion Picture Projectionists |
| R-C-E | Amusement and Recreation Attendants |
| R-C-I | Embalmers |
| R-C-E | Stock Clerks, Sales Floor |
| R-C-E | Mail Machine Operators, Preparation and Handling |
| R-C-E | Graders and Sorters, Agricultural Products |
| R-C-E | Agricultural Equipment Operators |
| R-C-E | Nursery Workers |
| R-C-I | Farmworkers, Farm and Ranch Animals |
| R-C-E | Hunters and Trappers |
| R-C-E | Fallers |
| R-C-E | Logging Tractor Operators |
| R-C-E | Boilermakers |
| R-C-E | Construction Carpenters |
| R-C-E | Rough Carpenters |
| R-C-E | Carpenter Assemblers and Repairers |
| R-C-E | Ship Carpenters and Joiners |
| R-C-E | Boat Builders and Shipwrights |
| R-C-E | Brattice Builders |
| R-C-E | Carpet Installers |
| R-C-E | Floor Layers, Except Carpet, Wood, and Hard Tiles |
| R-C-E | Floor Sanders and Finishers |
| R-C-E | Tile and Marble Setters |
| R-C-E | Cement Masons and Concrete Finishers |
| R-C-E | Terrazzo Workers and Finishers |
| R-C-E | Construction Laborers |
| R-C-E | Paving, Surfacing, and Tamping Equipment Operators |
| R-C-E | Pile-Driver Operators |
| R-C-E | Grader, Bulldozer, and Scraper Operators |
| R-C-E | Drywall Installers |
| R-C-E | Tapers |
| R-C-E | Glaziers |
| R-C-E | Insulation Workers, Floor, Ceiling, and Wall |
| R-C-E | Insulation Workers, Mechanical |
| R-C-E | Painters, Construction and Maintenance |
| R-C-E | Paperhangers |
| R-C-E | Pipelayers |
| R-C-E | Pipe Fitters |
| R-C-E | Pipelaying Fitters |
| R-C-E | Plasterers and Stucco Masons |
| R-C-E | Reinforcing Iron and Rebar Workers |
| R-C-E | Roofers |
| R-C-E | Sheet Metal Workers |
| R-C-E | Structural Iron and Steel Workers |
| R-C-E | Helpers--Brickmasons, Blockmasons, Stonemasons, and Tile and Marble Setters |
| R-C-E | Helpers--Carpenters |
| R-C-E | Helpers--Electricians |
| R-C-E | Helpers--Painters, Paperhangers, Plasterers, and Stucco Masons |
| R-C-E | Helpers--Pipelayers, Plumbers, Pipefitters, and Steamfitters |
| R-C-E | Elevator Installers and Repairers |
| R-C-E | Fence Erectors |
| R-C-I | Irradiated-Fuel Handlers |
| R-C-E | Highway Maintenance Workers |
| R-C-E | Rail-Track Laying and Maintenance Equipment Operators |
| R-C-E | Septic Tank Servicers and Sewer Pipe Cleaners |
| R-C-E | Derrick Operators, Oil and Gas |
| R-C-E | Rotary Drill Operators, Oil and Gas |
| R-C-E | Service Unit Operators, Oil, Gas, and Mining |
| R-C-E | Construction Drillers |
| R-C-E | Well and Core Drill Operators |
| R-C-E | Explosives Workers, Ordnance Handling Experts, and Blasters |
| R-C-E | Continuous Mining Machine Operators |
| R-C-E | Mine Cutting and Channeling Machine Operators |
| R-C-E | Rock Splitters, Quarry |
| R-C-E | Roof Bolters, Mining |
| R-C-E | Roustabouts, Oil and Gas |
| R-C-E | Helpers--Extraction Workers |
| R-C-E | Automatic Teller Machine Servicers |
| R-C-I | Data Processing Equipment Repairers |
| R-C-E | Office Machine and Cash Register Servicers |
| R-C-I | Radio Mechanics |
| R-C-I | Central Office and PBX Installers and Repairers |
| R-C-I | Frame Wirers, Central Office |
| R-C-E | Communication Equipment Mechanics, Installers, and Repairers |
| R-C-E | Station Installers and Repairers, Telephone |
| R-C-I | Avionics Technicians |
| R-C-E | Electric Home Appliance and Power Tool Repairers |
| R-C-I | Electric Motor and Switch Assemblers and Repairers |
| R-C-E | Battery Repairers |
| R-C-E | Transformer Repairers |
| R-C-E | Electrical Parts Reconditioners |
| R-C-E | Hand and Portable Power Tool Repairers |
| R-C-I | Electrical and Electronics Installers and Repairers, Transportation Equipment |
| R-C-I | Electrical and Electronics Repairers, Powerhouse, Substation, and Relay |
| R-C-I | Electronic Equipment Installers and Repairers, Motor Vehicles |
| R-C-I | Electronic Home Entertainment Equipment Installers and Repairers |
| R-C-I | Aircraft Body and Bonded Structure Repairers |
| R-C-E | Automotive Body and Related Repairers |
| R-C-E | Automotive Glass Installers and Repairers |
| R-C-I | Automotive Master Mechanics |
| R-C-I | Automotive Specialty Technicians |
| R-C-I | Bus and Truck Mechanics and Diesel Engine Specialists |
| R-C-I | Mobile Heavy Equipment Mechanics, Except Engines |
| R-C-E | Rail Car Repairers |
| R-C-E | Motorcycle Mechanics |
| R-C-E | Outdoor Power Equipment and Other Small Engine Mechanics |
| R-C-E | Bicycle Repairers |
| R-C-E | Maintenance Workers, Machinery |
| R-C-I | Refractory Materials Repairers, Except Brickmasons |
| R-C-I | Electrical Power-Line Installers and Repairers |
| R-C-I | Telecommunications Line Installers and Repairers |
| R-C-I | Camera and Photographic Equipment Repairers |
| R-C-E | Watch Repairers |
| R-C-E | Coin, Vending, and Amusement Machine Servicers and Repairers |
| R-C-E | Fabric Menders, Except Garment |
| R-C-E | Locksmiths and Safe Repairers |
| R-C-I | Signal and Track Switch Repairers |
| R-C-E | Helpers--Installation, Maintenance, and Repair Workers |
| R-C-I | Aircraft Structure Assemblers, Precision |
| R-C-I | Aircraft Systems Assemblers, Precision |
| R-C-I | Aircraft Rigging Assemblers |
| R-C-E | Coil Winders, Tapers, and Finishers |
| R-C-I | Electrical and Electronic Equipment Assemblers |
| R-C-I | Electromechanical Equipment Assemblers |
| R-C-I | Engine and Other Machine Assemblers |
| R-C-E | Metal Fabricators, Structural Metal Products |
| R-C-I | Fitters, Structural Metal- Precision |
| R-C-I | Timing Device Assemblers, Adjusters, and Calibrators |
| R-C-E | Bakers, Manufacturing |
| R-C-E | Meat, Poultry, and Fish Cutters and Trimmers |
| R-C-E | Slaughterers and Meat Packers |
| R-C-I | Food and Tobacco Roasting, Baking, and Drying Machine Operators and Tenders |
| R-C-E | Food Cooking Machine Operators and Tenders |
| R-C-E | Numerical Control Machine Tool Operators and Tenders, Metal and Plastic |
| R-C-I | Numerical Tool and Process Control Programmers |
| R-C-E | Extruding and Drawing Machine Setters, Operators, and Tenders, Metal and Plastic |
| R-C-E | Forging Machine Setters, Operators, and Tenders, Metal and Plastic |
| R-C-E | Rolling Machine Setters, Operators, and Tenders, Metal and Plastic |
| R-C-I | Sawing Machine Tool Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Punching Machine Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Press and Press Brake Machine Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Shear and Slitter Machine Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Drilling and Boring Machine Tool Setters, Operators, and Tenders, Metal and Plastic |
| R-C-E | Grinding, Honing, Lapping, and Deburring Machine Set-Up Operators |
| R-C-E | Buffing and Polishing Set-Up Operators |
| R-C-I | Lathe and Turning Machine Tool Setters, Operators, and Tenders, Metal and Plastic |
| R-C-E | Milling and Planing Machine Setters, Operators, and Tenders, Metal and Plastic |
| R-C-E | Metal-Refining Furnace Operators and Tenders |
| R-C-E | Pourers and Casters, Metal |
| R-C-I | Model Makers, Metal and Plastic |
| R-C-E | Patternmakers, Metal and Plastic |
| R-C-I | Foundry Mold and Coremakers |
| R-C-E | Plastic Molding and Casting Machine Setters and Set-Up Operators |
| R-C-E | Plastic Molding and Casting Machine Operators and Tenders |
| R-C-E | Metal Molding, Coremaking, and Casting Machine Setters and Set-Up Operators |
| R-C-E | Metal Molding, Coremaking, and Casting Machine Operators and Tenders |
| R-C-E | Casting Machine Set-Up Operators |
| R-C-E | Combination Machine Tool Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Combination Machine Tool Operators and Tenders, Metal and Plastic |
| R-C-I | Tool and Die Makers |
| R-C-E | Welders, Production |
| R-C-I | Welders and Cutters |
| R-C-E | Solderers |
| R-C-E | Brazers |
| R-C-E | Welding Machine Setters and Set-Up Operators |
| R-C-I | Welding Machine Operators and Tenders |
| R-C-E | Soldering and Brazing Machine Setters and Set-Up Operators |
| R-C-E | Soldering and Brazing Machine Operators and Tenders |
| R-C-E | Heating Equipment Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Heat Treating, Annealing, and Tempering Machine Operators and Tenders, Metal and Plastic |
| R-C-E | Heaters, Metal and Plastic |
| R-C-E | Lay-Out Workers, Metal and Plastic |
| R-C-E | Electrolytic Plating and Coating Machine Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Electrolytic Plating and Coating Machine Operators and Tenders, Metal and Plastic |
| R-C-E | Nonelectrolytic Plating and Coating Machine Setters and Set-Up Operators, Metal and Plastic |
| R-C-E | Nonelectrolytic Plating and Coating Machine Operators and Tenders, Metal and Plastic |
| R-C-E | Tool Grinders, Filers, and Sharpeners |
| R-C-E | Bindery Machine Setters and Set-Up Operators |
| R-C-I | Bindery Machine Operators and Tenders |
| R-C-E | Job Printers |
| R-C-E | Hand Compositors and Typesetters |
| R-C-E | Paste-Up Workers |
| R-C-E | Scanner Operators |
| R-C-E | Strippers |
| R-C-E | Platemakers |
| R-C-E | Dot Etchers |
| R-C-E | Electronic Masking System Operators |
| R-C-E | Electrotypers and Stereotypers |
| R-C-E | Plate Finishers |
| R-C-I | Typesetting and Composing Machine Operators and Tenders |
| R-C-A | Photoengraving and Lithographing Machine Operators and Tenders |
| R-C-A | Precision Printing Workers |
| R-C-E | Offset Lithographic Press Setters and Set-Up Operators |
| R-C-E | Letterpress Setters and Set-Up Operators |
| R-C-A | Design Printing Machine Setters and Set-Up Operators |
| R-C-E | Marking and Identification Printing Machine Setters and Set-Up Operators |
| R-C-E | Screen Printing Machine Setters and Set-Up Operators |
| R-C-E | Embossing Machine Set-Up Operators |
| R-C-E | Engraver Set-Up Operators |
| R-C-E | Printing Press Machine Operators and Tenders |
| R-C-E | Spotters, Dry Cleaning |
| R-C-I | Precision Dyers |
| R-C-E | Laundry and Drycleaning Machine Operators and Tenders, Except Pressing |
| R-C-E | Pressers, Delicate Fabrics |
| R-C-E | Pressing Machine Operators and Tenders- Textile, Garment, and Related Materials |
| R-C-E | Pressers, Hand |
| R-C-E | Sewing Machine Operators, Garment |
| R-C-E | Sewing Machine Operators, Non-Garment |
| R-C-E | Shoe Machine Operators and Tenders |
| R-C-E | Sewers, Hand |
| R-C-A | Shop and Alteration Tailors |
| R-C-E | Textile Bleaching and Dyeing Machine Operators and Tenders |
| R-C-E | Textile Cutting Machine Setters, Operators, and Tenders |
| R-C-E | Textile Knitting and Weaving Machine Setters, Operators, and Tenders |
| R-C-E | Textile Winding, Twisting, and Drawing Out Machine Setters, Operators, and Tenders |
| R-C-I | Extruding and Forming Machine Operators and Tenders, Synthetic or Glass Fibers |
| R-C-E | Fabric and Apparel Patternmakers |
| R-C-E | Upholsterers |
| R-C-E | Model Makers, Wood |
| R-C-E | Patternmakers, Wood |
| R-C-I | Sawing Machine Setters and Set-Up Operators |
| R-C-E | Sawing Machine Operators and Tenders |
| R-C-I | Woodworking Machine Setters and Set-Up Operators, Except Sawing |
| R-C-I | Woodworking Machine Operators and Tenders, Except Sawing |
| R-C-I | Nuclear Power Reactor Operators |
| R-C-I | Power Distributors and Dispatchers |
| R-C-I | Power Generating Plant Operators, Except Auxiliary Equipment Operators |
| R-C-I | Auxiliary Equipment Operators, Power |
| R-C-I | Boiler Operators and Tenders, Low Pressure |
| R-C-E | Stationary Engineers |
| R-C-I | Water and Liquid Waste Treatment Plant and System Operators |
| R-C-I | Chemical Plant and System Operators |
| R-C-E | Gas Processing Plant Operators |
| R-C-E | Gas Distribution Plant Operators |
| R-C-E | Petroleum Pump System Operators |
| R-C-I | Gaugers |
| R-C-I | Chemical Equipment Controllers and Operators |
| R-C-I | Chemical Equipment Tenders |
| R-C-I | Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders |
| R-C-E | Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders |
| R-C-E | Grinding and Polishing Workers, Hand |
| R-C-E | Mixing and Blending Machine Setters, Operators, and Tenders |
| R-C-E | Cutters and Trimmers, Hand |
| R-C-E | Fiber Product Cutting Machine Setters and Set-Up Operators |
| R-C-E | Stone Sawyers |
| R-C-E | Glass Cutting Machine Setters and Set-Up Operators |
| R-C-E | Cutting and Slicing Machine Operators and Tenders |
| R-C-E | Bench Workers, Jewelry |
| R-C-A | Pewter Casters and Finishers |
| R-C-A | Gem and Diamond Workers |
| R-C-I | Precision Lens Grinders and Polishers |
| R-C-I | Optical Instrument Assemblers |
| R-C-E | Packaging and Filling Machine Operators and Tenders |
| R-C-I | Coating, Painting, and Spraying Machine Setters and Set-Up Operators |
| R-C-I | Coating, Painting, and Spraying Machine Operators and Tenders |
| R-C-E | Painters, Transportation Equipment |
| R-C-A | Painting, Coating, and Decorating Workers |
| R-C-E | Photographic Reproduction Technicians |
| R-C-I | Film Laboratory Technicians |
| R-C-I | Photographic Processing Machine Operators |
| R-C-I | Semiconductor Processors |
| R-C-E | Cementing and Gluing Machine Operators and Tenders |
| R-C-E | Cleaning, Washing, and Metal Pickling Equipment Operators and Tenders |
| R-C-I | Cooling and Freezing Equipment Operators and Tenders |
| R-C-A | Precision Etchers and Engravers, Hand or Machine |
| R-C-A | Pantograph Engravers |
| R-C-E | Precision Mold and Pattern Casters, except Nonferrous Metals |
| R-C-E | Precision Pattern and Die Casters, Nonferrous Metals |
| R-C-A | Glass Blowers, Molders, Benders, and Finishers |
| R-C-E | Mold Makers, Hand |
| R-C-E | Molding and Casting Workers |
| R-C-E | Paper Goods Machine Setters, Operators, and Tenders |
| R-C-E | Tire Builders |
| R-C-E | Production Laborers |
| R-C-E | Production Helpers |
| R-C-E | Truck Drivers, Heavy |
| R-C-E | Tractor-Trailer Truck Drivers |
| R-C-E | Truck Drivers, Light or Delivery Services |
| R-C-I | Locomotive Engineers |
| R-C-I | Locomotive Firers |
| R-C-E | Rail Yard Engineers, Dinkey Operators, and Hostlers |
| R-C-I | Train Crew Members |
| R-C-I | Railroad Yard Workers |
| R-C-S | Subway and Streetcar Operators |
| R-C-E | Able Seamen |
| R-C-E | Ordinary Seamen and Marine Oilers |
| R-C-E | Bridge and Lock Tenders |
| R-C-E | Railroad Inspectors |
| R-C-E | Motor Vehicle Inspectors |
| R-C-I | Conveyor Operators and Tenders |
| R-C-E | Crane and Tower Operators |
| R-C-E | Dredge Operators |
| R-C-E | Excavating and Loading Machine Operators |
| R-C-E | Dragline Operators |
| R-C-E | Loading Machine Operators, Underground Mining |
| R-C-E | Hoist and Winch Operators |
| R-C-E | Industrial Truck and Tractor Operators |
| R-C-E | Cleaners of Vehicles and Equipment |
| R-C-E | Stevedores, Except Equipment Operators |
| R-C-E | Grips and Set-Up Workers, Motion Picture Sets, Studios, and Stages |
| R-C-E | Freight, Stock, and Material Movers, Hand |
| R-C-E | Machine Feeders and Offbearers |
| R-C-E | Packers and Packagers, Hand |
| R-C-I | Gas Pumping Station Operators |
| R-C-I | Gas Compressor Operators |
| R-C-I | Pump Operators, Except Wellhead Pumpers |
| R-C-E | Wellhead Pumpers |
| R-C-E | Refuse and Recyclable Material Collectors |
| R-C-E | Shuttle Car Operators |
| R-C-E | Tank Car, Truck, and Ship Loaders |
