Occupational Title | Brief Number | HOC Code |
| Early Childhood Education Teachers | 241 | SAE |
| Earth Scientists | 129 | IRE |
| Ecologists, Animal | 237 | IRE |
| Ecologists, Aquatic (zoologists) | 237 | IRE |
| Ecologists, Behavioral | 547 | IRE |
| Econometricians | 233 | IAS |
| Economic Geographers | 155 | IRE |
| Economic Officers | 189 | ESA |
| Economists | 233 | IAS |
| Economists, Demographic | 233 | IAS |
| Economists, Financial | 233 | IAS |
| Economists, Industrial | 233 | IAS |
| Economists, International Trade | 233 | IAS |
| Economists, Labor | 233 | IAS |
| Economists, Monetary | 233 | IAS |
| Economists, Organizational | 233 | IAS |
| Economists, Public Finance | 233 | IAS |
| Economists, Regional | 233 | IAS |
| Economists, Urban | 233 | IAS |
| Editorial Assistants | 481 | CIA |
| Editorial Cartoonists | 124 | AES |
| Editorial Illustrators (cartoonists) | 124 | AER |
| Editors, Copy | 131 | AES |
| Editors, Film (motion picture) | 262 | AES |
| Editors (publishing) | 231 | AES, CIA |
| Editors, Sound (motion picture industry) | 2 | RAE |
| Editors, Weekly Newspaper | 128 | AES, ESA |
| Educational Psychologists | 144 | IES |
| Educational Services Directors (training & development specialists) | 572 | EIS, SRE |
| Educational Sociologists | 316 | IES |
| Education and Training Managers (human resources) | 258 | EIS |
| Education and Training Managers (training & development specialists) | 572 | EIS, SRE |
| Educators, Distance Learning | 632 | SER |
| Egg Farmers (poultry industry) | 248 | RSE |
| Egg Farm Owners (poultry industry) | 248 | ESR |
| Egg Farm Supervisors (poultry industry) | 248 | no code |
| EKG Technicians (cardiovascular technologists) | 437 | RCI |
| Electrical Drafters | 22 | IRC |
| Electrical and Electronics Industry Workers | 318 | no code |
| Electrical and Electronics Repairers (instrumentation technicians) | 194 | RIS |
| Electrical Engineering Technicians | 158 | RIE |
| Electrical Engineers | 356 | IRE |
| Electrical Engineers | 158 | IRE |
| Electricians | 395 | RCI |
| Electricians, Maintenance | 395 | RCI |
| Electricians, Master (stage production technical staff) | 675 | AES |
| Electric Power Line Workers | 109 | RES |
| Electrocardiograph Technicians (cardiovascular technologists) | 437 | RCI |
| Electroencephalographic Technologists | 474 | RCS |
| Electrologists | 168 | CRE |
| Electroneurodiagnostic Technologists | 474 | RCS |
| Electronic Drafters | 22 | IRE |
| Electronic Pagination System Workers | 195 | CRA |
| Electronic Publishing Specialists | 195 | CRA |
| Electronics Engineering Technicians | 166 | IRE |
| Electronics Engineers | 166 | RIE |
| Electro-optics Engineers | 540 | IRE |
| Electroplaters | 398 | RIE |
| Electroplaters (bench jewelers) | 640 | RIE |
| Elementary School Counselors | 145 | SAE |
| Elementary School Teachers | 216 | SAE |
| Elevator Installers | 286 | RIE |
| Elevator Repairers (installers) | 286 | RIS |
| Embalmers (funeral directors) | 38 | RIS |
| Embryologists (zoologists) | 237 | IRE |
| Emergency Management Specialists | 684 | ESA |
| Emergency Medical Services Dispatchers | 180 | CSE |
| Emergency Medical Technicians | 501 | RSI |
| Emergency Response Specialists (hazardous waste management) | 537 | ESI |
| Emergency Services Operators (receptionists) | 107 | CSE |
| Employee Development Specialists/Managers (training & development) | 572 | EIS, SRE |
| Employee Welfare Managers (human resources) | 258 | SEA |
| Employment Clerks | 402 | CES |
| Employment Counselors | 598 | SAE |
| Employment Firm Managers | 402 | ESC |
| Employment Firm Workers | 402 | no code |
| Employment Interviewers | 214 | SCE |
| Employment Interviewers | 402 | SCE |
| Employment Managers (human resources) | 258 | ESC |
| EMTs | 501 | RSI |
| EMTs - Basic | 501 | RSI |
| EMTs - Intermediate | 501 | RSI |
| EMTs - Paramedic | 501 | RSI |
| Endocrinologists, Reproductive (obstetrician-gynecologists) | 578 | IRS |
| Endodontists (dentists) | 59 | ISE |
| Energy Auditors | 575 | RES |
| Energy Conservation Specialists | 575 | RES |
| Energy Management Technicians | 575 | RES |
| Engineering Geologists | 129 | IRE |
| Engineering Psychologists | 144 | IRS |
| Engineers, Aerodynamics (aerospace) | 159 | IRE |
| Engineers, Aeronautical | 159 | IRS |
| Engineers, Aerospace | 159 | IRS |
| Engineers, Agricultural and Biological | 176 | IRE |
| Engineers, Applications | 614 | IES |
| Engineers, Astronautical | 159 | IRS |
| Engineers, Audio Maintenance (recording industry) | 317 | RES |
| Engineers, Audio (recording industry) | 317 | RES |
| Engineers, Bioinstrumentation | 519 | IRE |
| Engineers, Biomaterials | 519 | IRE |
| Engineers, Biomechanical | 519 | IRE |
| Engineers, Biomedical | 519 | IRE |
| Engineers, Bioprocess (biotechnologists) | 634 | IAR |
| Engineers, Broadcast (radio & television broadcasting) | 428 | RSE |
| Engineers, Cellular, Tissue and Genetic | 519 | IRE |
| Engineers, Ceramic | 161 | IRS |
| Engineers, Ceramic (materials) | 256 | IRS |
| Engineers, Chemical | 160 | IRE |
| Engineers, Chemical (petroleum refining) | 188 | IRE |
| Engineers, Chief Compressor Station (gas & oil distribution) | 196 | RES |
| Engineers, Chief (merchant mariners) | 379 | RES |
| Engineers, Chief (radio & television broadcasting) | 428 | RIE |
| Engineers, Chief Station (gas & oil distribution) | 196 | RES |
| Engineers, Civil | 156 | IRE |
| Engineers, Clinical | 519 | IRE |
| Engineers, Composites | 256 | REI |
| Engineers, Computer Applications Software | 672 | IRE |
| Engineers, Computer Hardware (electronics) | 166 | RIE |
| Engineers, Computer Software | 672 | IRE |
| Engineers, Computer Systems Software | 672 | IRE |
| Engineers, Construction (civil) | 156 | ERS, IRE |
| Engineers, Design | 159 | IRE |
| Engineers, Drilling (petroleum) | 263 | RIE |
| Engineers, Electrical | 158 | IRE |
| Engineers, Electrical | 356 | IRE |
| Engineers, Electronics | 166 | RIE |
| Engineers, Electro-optics | 540 | IRE |
| Engineers, Environmental | 116 | IRE |
| Engineers, Environmental (civil) | 156 | IRE |
| Engineers, Fiber Optics | 659 | IRE, RIC |
| Engineers, Fire Protection | 576 | IEC |
| Engineers, Fire Protection (safety professionals) | 420 | IEC |
| Engineers, Flight (airplane pilots) | 29 | RIE |
| Engineers, Flight Test (aerospace) | 159 | RIE |
| Engineers, Genetic | 533 | IRS |
| Engineers, Geotechnical (civil) | 156 | IER |
| Engineers, Hydraulics (civil) | 156 | IRE, IRS |
| Engineers, Illuminating | 356 | IRE |
| Engineers, Industrial | 284 | EIR |
| Engineers, Industrial Health (safety professionals) | 420 | EIC |
| Engineers, Industrial Hygiene | 461 | EIC |
| Engineers, Laser | 540 | IRE |
| Engineers, Locomotive (railroad) | 14 | RES |
| Engineers, Manufacturing | 542 | IRE |
| Engineers, Manufacturing (aerospace) | 159 | REI |
| Engineers, Marine | 200 | IRE, IRS |
| Engineers, Marine | 163 | IRE |
| Engineers, Materials | 256 | REI |
| Engineers, Materials (aerospace) | 159 | REI |
| Engineers, Mechanical | 326 | RIS |
| Engineers, Medical Imaging | 519 | IRE |
| Engineers, Metallurgical (materials) | 256 | IRE |
| Engineers, Metallurgical (mining) | 312 | IRE |
| Engineers, Mining | 312 | RIE |
| Engineers, Nuclear (power plant) | 320 | IRE |
| Engineers, Ocean | 163 | IRE |
| Engineers, Ocean | 200 | IRE, IRS |
| Engineers, Oceanographic | 200 | IRE, IRS |
| Engineers, Oceanographic | 163 | IRE |
| Engineers, Packaging | 274 | ICS |
| Engineers, Petroleum | 197 | RIE |
| Engineers, Pipeline (gas & oil distribution) | 196 | ISR |
| Engineers, Plastics | 256 | REI |
| Engineers, Port | 163 | IRE |
| Engineers, Production (petroleum drilling) | 263 | EIC |
| Engineers, Project | 324 | ERS |
| Engineers, Propulsion | 159 | IRS |
| Engineers, Quality | 458 | IRE |
| Engineers, Radiological (nuclear power plant) | 320 | RCS |
| Engineers, Recording | 317 | RES |
| Engineers, Rehabilitation | 519 | IRE |
| Engineers, Safety (professionals) | 420 | ISR |
| Engineers, Simulation | 159 | IRS |
| Engineers, Stability and Control | 159 | IRS |
| Engineers, Stationary | 252 | REI |
| Engineers, Station (gas & oil distribution) | 196 | RCE |
| Engineers, Structural (aerospace) | 159 | RIE |
| Engineers, Structural (civil) | 156 | IRE, IRS |
| Engineers, Technical Publications | 195 | CRA |
| Engineers, Transportation | 488 | ISR |
| Engineers, Transportation (civil) | 156 | IRE, ISR |
| Engineers, Water Resources (civil) | 156 | IRE, IRS |
| Engineers, Welding | 565 | IRE |
| Engineers, Yarder (logging industry) | 416 | RES |
| Engineers, Yard (railroad) | 14 | RIE |
| Engine Outfitters (shipbuilding) | 435 | RIE |
| Engine Programmers | 678 | IRC |
| English as a Second Language Teachers | 58 | SER |
| Engravers | 240 | RCE, RIE |
| Engravers (bench jewelers) | 640 | RCE |
| Engravers, Bowling Ball (sporting goods production) | 567 | RCE |
| Enlisted Personnel (armed forces) | 439 | no code |
| Enologists | 334 | EIR |
| Enologists (winery workers) | 613 | EIR |
| Enrobing Machine Operators (confectionery industry) | 357 | RES |
| Enrolled Agents | 568 | CES |
| Enroute Air Traffic Controllers | 322 | SER |
| Entomologists | 243 | IRS |
| Entomologists (zoologists) | 237 | IRS |
| Entrepreneurs | 550 | ESA, ESR, RES |
| Environmental Engineers | 116 | IRE |
| Environmental Engineers (civil) | 156 | IRE |
| Environmental Geographers | 155 | IRE |
| Environmental Geologists | 129 | IRE |
| Environmental Health Specialists | 431 | ESR, IRE, ISR |
| Epidemiologists | 49 | IRE, IRS |
| Equal Employment Opportunity Officers (human resources) | 258 | SRI |
| Equestrians (circus performers) | 251 | AER |
| Ergonomists | 551 | IRS |
| Ergonomists (industrial hygienists) | 461 | IRS |
| ESL Teachers | 58 | SER |
| Estate Managers (household service) | 232 | ECR |
| Estheticians | 7 | SEA |
| Estheticians | 7 | SEA |
| Ethics Officers | 323 | ESR |
| Ethnic Dancers | 394 | AER |
| Ethnologists | 382 | IRE |
| Ethologists | 237 | IRE |
| Ethologists (animal behaviorists) | 547 | IAR |
| Etymologists | 658 | IAS |
| Eviscerators, Animal (slaughtering & meat-packing production) | 423 | RES |
| Evoked Potential Technologists | 474 | RCS |
| Executive Assistants (congressional aides) | 525 | ESR |
| Executive Assistants (secretaries) | 19 | ESC |
| Executive Chefs | 40 | SER |
| Executive Chefs (lodging) | 350 | SER |
| Executive Directors of Aviation | 457 | ESR |
| Executive Editors (publishing) | 231 | AES, CIA |
| Executive Housekeepers | 358 | ECR |
| Executive Housekeepers (lodging) | 350 | ECR |
| Executive Officers, Chief (association) | 549 | ESR |
| Executives, Assistant Account (advertising agency) | 113 | AES |
| Executives, Association | 549 | ESA |
| Executive Secretaries | 19 | ESC |
| Executives, Publications (association) | 549 | AES |
| Exercise Riders (racetrack workers) | 629 | REA |
| Expediters | 246 | CSE |
| Experimental Machinists | 32 | RIS |
| Experimental Psychologists | 144 | IRS |
| Exploration Geophysicists | 148 | IER |
| Export-Import Managers | 403 | ESA |
| Export-Import Specialists | 403 | no code |
| Extension Agents | 238 | IRS |
| Exterminators (pest control workers) | 372 | RES |
| External Auditors | 101 | EIS |
| Extractive Metallurgists | 62 | IRE |
| Extruder Operators (industrial chemicals production) | 369 | CRE |
| Eye Doctors | 85 | ISE |