Occupational Title | Brief Number | HOC Code |
| Ultrasonographers | 513 | RSI |
| Ultrasound Technologists | 513 | RSI |
| Umpires (Sports) | 294 | ESR |
| Unemployment Insurance Auditors | 101 | no code |
| Upholsterers | 219 | RCS |
| Upholsterers (furniture manufacturing) | 373 | RCI |
| Upsetters (forge shop) | 352 | RIS |
| Urban Economists | 233 | IAS |
| Urban Geographers | 155 | IRE |
| Urban Horticulturists | 203 | IRS |
| Urban Planners | 152 | ESI |
| Urban and Regional Planners | 152 | ESI |
| Urban and Regional Planning Aides | 152 | CSE |
| Urban Sociologists | 316 | IES |
| Ushers (motion picture theater) | 70 | CES |
| Utility Arborists | 291 | RSE |
| Utility Company Dispatchers | 180 | ECS |
| Valets | 463 | CRS |
| Valets (household service) | 232 | SEC |
| Variety Performers | 607 | no code |
| Varnish Makers (paint & coatings industry) | 56 | REI |
| Vascular Sonographers | 437 | ISR |
| Vascular Technologists | 437 | ISR |
| Vending Machine Repairers | 313 | RSE |
| Vendors (entrepreneurs) | 550 | RES |
| Ventriloquists (variety performers) | 607 | AES |
| Veterinarians | 83 | IRS |
| Veterinary Assistants (animal caretakers) | 319 | ISR |
| Veterinary Behaviorists | 547 | IRE |
| Veterinary Epidemiologists | 49 | IRE |
| Veterinary Technicians | 480 | ISR |
| Veterinary Technologists | 480 | ISR |
| Vial and Ampoule Examiners (pharmaceutical industry) | 306 | CRS, RCE |
| Vial and Ampoule Fillers (pharmaceutical industry) | 306 | RCE |
| Vice Presidents for Admissions and Records | 371 | ESC |
| Video Game Developers | 678 | IRC |
| Virologists | 135 | IRA |
| Vision Rehabilitation Therapists | 539 | SER |
| Viticulturists | 334 | EIR |
| Vocational Counselors | 598 | SAE |
| Voice Cccaptioners (court reporters) | 265 | IRC |
| Voice Writers | 265 | CSE |
| Volcanologists | 148 | IRS |
| Volunteer Services Coordinators | 639 | SEC |
| Waiters and Waitresses | 17 | ECS, ESC |
| Wait Staff | 17 | ECS, ESC |
| Wall Covering Applicators | 98 | RSE |
| Wardrobe Supervisors (stage production technical staff) | 675 | RES |
| Warehouse Managers (industrial traffic) | 115 | ESR |
| Warp Knitting Machine Operators | 413 | RCS |
| Washer Operators (canning & preserving) | 389 | REC |
| Washroom Attendants (laundry) | 79 | REI |
| Wastewater Treatment Plant Chemists | 153 | IRC |
| Wastewater Treatment Plant Operators | 517 | REI |
| Watch Repairers (bench jewelers) | 640 | REI |
| Water Resources Engineers (civil) | 156 | IRE, IRS |
| Water Treatment Plant Operators | 517 | REI |
| Water and Wastewater Treatment Plant Attendants (operators) | 517 | REI |
| Water and Wastewater Treatment Plant Operators | 517 | REI |
| Water and Wastewater Treatment Plant Technicians (operators) | 517 | REI |
| Water Well Drillers | 499 | RIE |
| Weathercasters (radio & television news reporters) | 466 | IRS |
| Web Administrators | 296 | IRC |
| Webbers (furniture manufacturing) | 373 | RCS |
| Webbers (upholsterers) | 219 | RCS |
| Web Content Developers (professionals) | 296 | IRE |
| Web Designers (professionals) | 296 | AER |
| Web Developers (professionals) | 296 | IRE |
| Web Marketing Directors | 633 | AES |
| Webmasters | 296 | IRC |
| Webmasters | 648 | RSI |
| Webmasters (publishing) | 231 | IRS |
| Web Professionals | 296 | RSI |
| Web Programmers (professionals) | 296 | IRC |
| Web Publications Designers | 195 | CRA |
| Web Technical Designers | 330 | AER |
| Wedding Consultants | 454 | AES |
| Weekly Newspaper Editors | 128 | AES, ESA |
| Weight Reduction Specialists | 571 | SEC |
| Welders | 27 | no code |
| Welders, Arc | 27 | RIS |
| Welders, Gas | 27 | REI |
| Welders, Resistance | 27 | RES |
| Welders (shipbuilding) | 435 | RIS |
| Welding Engineers | 565 | IRE |
| Wholesale Dealers (manufacturer's representatives) | 417 | ESA |
| Wholesalers (export-import) | 403 | ESA |
| Wild Animal Trainers | 508 | RES, SEC |
| Wildlife Biologists | 237 | IRE |
| Wildlife Biologists | 453 | IRE |
| Wildlife Biologists (animal behaviorists) | 547 | IAR |
| Wildlife Enforcement Officers | 213 | RES |
| Wildlife Special Agents (conservation) | 213 | ERI |
| Winch Operators (longshore) | 484 | RIS |
| Windjammers (circus performers) | 251 | ASC |
| Window Dressers | 127 | ARE |
| Winemakers | 334 | EIR |
| Winery Workers | 613 | REC |
| Wireless and Satellite Service Installers (telecommunications workers) | 690 | RIE |
| Wood Products Technicians | 477 | IRS |
| Wood Scientists | 477 | IRS |
| Wood Technologists | 477 | IRS |
| Woodworking Machine Operators (furniture manufacturing) | 373 | RIE |
| Wool Pullers (slaughtering & meat-packing production) | 423 | CRE |
| Word Processing Specialists (data entry operators) | 308 | CRS |
| D&D Workers (hazardous material removal) | 566 | REI |
| Wrestlers, Professional | 444 | SRC |
| Wringer Machine Operators (leather tanning & finishing) | 297 | REC |
| Writers, Continuity (radio & television broadcasting) | 428 | AES |
| Writers, Creative | 606 | no code |
| Writers, Fiction | 606 | AIE |
| Writers, Freelance | 606 | no code |
| Writers, Freelance | 212 | AES |
| Writers, Medical | 57 | IRS |
| Writers (publishing) | 231 | AES, AIE, IRS |
| Writers, Questionnaire (marketing researchers) | 254 | IRS |
| Writers, Technical | 178 | IRS |