Before filing H1B petition with USCIS, the U.S. employer is required to file LCA with the Department of Labor. LCA requires to mention the occupation code.
Occupations in Architecture, Engineering, and Surveying
001 ARCHITECTURAL OCCUPATIONS
002 AERONAUTICAL ENGINEERING OCCUPATIONS
003 ELECTRICAL/ELECTRONICS ENGINEERING OCCUPATIONS
005 CIVIL ENGINEERING OCCUPATIONS
006 CERAMIC ENGINEERING OCCUPATIONS
007 MECHANICAL ENGINEERING OCCUPATIONS
008 CHEMICAL ENGINEERING OCCUPATIONS
010 MINING AND PETROLEUM ENGINEERING OCCUPATIONS
011 METALLURGY AND METALLURGICAL ENGINEERING OCCUPATIONS
012 INDUSTRIAL ENGINEERING OCCUPATIONS
013 AGRICULTURAL ENGINEERING OCCUPATIONS
014 MARINE ENGINEERING OCCUPATIONS
015 NUCLEAR ENGINEERING OCCUPATIONS
017 DRAFTERS
018 SURVEYING/CARTOGRAPHIC OCCUPATIONS
019 OTHER OCCUPATIONS IN ARCHITECTURE, ENGINEERING, AND SURVEYING
Occupations in Mathematics and Physical Sciences
020 OCCUPATIONS IN MATHEMATICS
021 OCCUPATIONS IN ASTRONOMY
022 OCCUPATIONS IN CHEMISTRY
023 OCCUPATIONS IN PHYSICS
024 OCCUPATIONS IN GEOLOGY
025 OCCUPATIONS IN METEOROLOGY
029 OTHER OCCUPATIONS IN MATHEMATICS AND PHYSICAL SCIENCES
Computer – Related Occupations
030 OCCUPATIONS IN SYSTEMS ANALYSIS AND PROGRAMMING
031 OCCUPATIONS IN DATA COMMUNICATIONS AND NETWORKS
032 OCCUPATIONS IN COMPUTER SYSTEM USER SUPPORT
033 OCCUPATIONS IN COMPUTER SYSTEM TECHNICAL SUPPORT
039 OTHER COMPUTER-RELATED OCCUPATIONS
Occupations in Life Sciences
040 OCCUPATIONS IN AGRICULTURAL SCIENCES
041 OCCUPATIONS IN BIOLOGICAL SCIENCES
045 OCCUPATIONS IN PSYCHOLOGY
049 OTHER OCCUPATIONS IN LIFE SCIENCES
Occupations in Social Sciences
050 OCCUPATIONS IN ECONOMICS
051 OCCUPATIONS IN POLITICAL SCIENCE
052 OCCUPATIONS IN HISTORY
054 OCCUPATIONS IN SOCIOLOGY
055 OCCUPATIONS IN ANTHROPOLOGY
059 OTHER OCCUPATIONS IN SOCIAL SCIENCES
Occupations in Medicine and Health
070 PHYSICIANS AND SURGEONS
071 OSTEOPATHS
072 DENTISTS
073 VETERINARIANS
074 PHARMACISTS
075 REGISTERED NURSES
076 THERAPISTS
077 DIETICIANS
078 OCCUPATIONS IN MEDICAL AND DENTAL TECHNOLOGY
079 OTHER OCCUPATIONS IN MEDICINE AND HEALTH
Occupations in Education
090 OCCUPATIONS IN COLLEGE AND UNIVERSITY EDUCATION
091 OCCUPATIONS IN SECONDARY SCHOOL EDUCATION
092 OCCUPATIONS IN PRESCHOOL, PRIMARY SCHOOL, AND KINDERGARTEN EDUCATION
094 OCCUPATIONS IN EDUCATION OF PERSONS WITH DISABILITIES
096 HOME ECONOMISTS AND FARM ADVISERS
097 OCCUPATIONS IN VOCATIONAL EDUCATION
099 OTHER OCCUPATIONS IN EDUCATION
Occupations in Museum, Library, and Archival Sciences
100 LIBRARIANS
101 ARCHIVISTS
102 MUSEUM CURATORS AND RELATED OCCUPATIONS
109 OTHER OCCUPATIONS IN MUSEUM, LIBRARY, AND ARCHIVAL SCIENCES
Occupations in Law and Jurisprudence
110 LAWYERS
111 JUDGES
119 OTHER OCCUPATIONS IN LAW AND JURISPRUDENCE
Occupations in Religion and Theology
120 CLERGY
129 OTHER OCCUPATIONS IN RELIGION AND THEOLOGY
Occupations in Writing
131 WRITERS
132 EDITORS: PUBLICATION, BROADCAST, AND SCRIPT
139 OTHER OCCUPATIONS IN WRITING
Occupations in Art
141 COMMERCIAL ARTISTS: DESIGNERS AND ILLUSTRATORS, GRAPHIC ARTS
142 ENVIRONMENTAL, PRODUCT, AND RELATED DESIGNERS
149 OTHER OCCUPATIONS IN ART
Occupations in Entertainment and Recreation
152 OCCUPATIONS IN MUSIC
159 OTHER OCCUPATIONS IN ENTERTAINMENT AND RECREATION
Occupations in Administrative Specializations
160 ACCOUNTANTS, AUDITORS, AND RELATED OCCUPATIONS
161 BUDGET AND MANAGEMENT SYSTEMS ANALYSIS OCCUPATIONS
162 PURCHASING MANAGEMENT OCCUPATIONS
163 SALES AND DISTRIBUTION MANAGEMENT OCCUPATIONS
164 ADVERTISING MANAGEMENT OCCUPATIONS
165 PUBLIC RELATIONS MANAGEMENT OCCUPATIONS
166 PERSONNEL ADMINISTRATION OCCUPATIONS
168 INSPECTORS AND INVESTIGATORS, MANAGERIAL AND PUBLIC SERVICE
169 OTHER OCCUPATIONS IN ADMINISTRATIVE OCCUPATIONS
Managers and Officials
180 AGRICULTURE, FORESTRY AND FISHING INDUSTRY MANAGERS AND OFFICIALS
181 MINING INDUSTRY MANAGERS AND OFFICIALS
182 CONSTRUCTION INDUSTRY MANAGERS AND OFFICIALS
183 MANUFACTURING INDUSTRY MANAGERS AND OFFICIALS
184 TRANSPORTATION, COMMUNICATION, AND UTILITIES INDUSTRY MANAGERS AND OFFICIALS
185 WHOLESALE AND RETAIL TRADE MANAGERS AND OFFICIALS
186 FINANCE, INSURANCE, AND REAL ESTATE MANAGERS AND OFFICIALS
187 SERVICE INDUSTRY MANAGERS AND OFFICIALS
188 PUBLIC ADMINISTRATION MANAGERS AND OFFICIALS
189 MISCELLANEOUS MANAGERS AND OFFICIALS
Miscellaneous Professional, Technical, and Managerial Occupations
195 OCCUPATIONS IN SOCIAL AND WELFARE WORK
199 MISCELLANEOUS PROFESSIONAL, TECHNICAL, AND MANAGERIAL OCCUPATIONS
Sales Promotion Occupations
297 FASHION MODELS
Miscellaneous
137 INTERPRETERS AND TRANSLATORS
143 OCCUPATIONS IN PHOTOGRAGPHY
144 FINE ARTISTS
150 OCCUPATIONS IN DRAMATICS
151 OCCUPATIONS IN DANCING
153 OCCUPATIONS IN ATHLETICS AND SPORTS
191 AGENTS AND APPRAISERS
193 RADIO OPERATORS
194 SOUND, FILM
196 AIRPLANE PILOTS
197 SHIP CAPTAINS
198 RAILROAD CONDUCTORS
