Nearly half of all millwrights are represented by labor unions, one of the highest rates of membership for one profession. The International Union, United Automobile, Aerospace, and Agricultural Implement Workers of America; the International Association of Machinists and Aerospace Workers; and the United Brotherhood of Carpenters and Joiners of America are three unions to which millwrights belong. The Associated General Contractors of America, National Tooling & Machining Association, and the Precision Machined Products Association are membership organizations for construction contractors, manufacturers, and other construction- and manufacturing-related entities.
- 3-D Printing Specialists
- Advanced Manufacturing Engineers
- Advanced Manufacturing Technicians
- Aeronautical and Aerospace Technicians
- Aerospace Engineers
- Apparel Industry Workers
- Appliance Service Technicians
- Architects
- Asbestos Abatement Technicians
- Assessors and Appraisers
- Automation Engineers
- Automobile Collision Repairers
- Automobile Sales Workers
- Automobile Service Technicians
- Automotive Dealership Owners
- Automotive Dealership Sales Managers
- Automotive Designers
- Automotive Engineering Technicians
- Automotive Engineers
- Automotive Industry Workers
- Automotive Technology Teachers
- Autonomous Vehicle Safety and Test Drivers
- Avionics Engineers
- Avionics Technicians
- Bindery Workers
- Bioenergy/Biofuels Workers
- Biofuels Processing Technicians
- Biofuels Production Managers
- Biofuels/Biodiesel Technology and Product Development Managers
- Biomass Plant Technicians
- Biomass Power Plant Managers
- Biomedical Engineers
- Biomedical Equipment Technicians
- Biotechnology Patent Lawyers
- Biotechnology Production Workers
- Biotechnology Research Assistants
- Boilermakers and Mechanics
- Bricklayers and Stonemasons
- Building Automation Systems Engineers
- Building Automation Systems Technicians
- Building Performance Diagnosticians
- Business Managers
- Carpenters
- Cement Masons
- Ceramics Engineers
- Chemical Engineers
- Chemical Technicians
- Chemists
- Chief Robotics Officer
- Civil Engineering Technicians
- Civil Engineers
- Clinical Applications Specialists
- Computer-Aided Design Drafters and Technicians
- Construction Inspectors
- Construction Laborers
- Construction Managers
- Continuous Improvement Managers
- Coremakers
- Corporate Climate Strategists
- Cost Estimators
- Diesel Mechanics
- Drafters
- Driverless Car Engineers
- Drone Manufacturing Workers
- Drywall Installers and Finishers
- Electrical Engineering Technologists
- Electrical Engineers
- Electricians
- Electromechanical Engineering Technologists
- Electronics Engineering Technicians
- Electronics Engineers
- Electronics Service Technicians
- Electroplating Workers
- Elevator Installers and Repairers
- Engineering Technicians
- Engineers
- Ethical Sourcing Officer
- Fiber Optics Technicians
- Fleet Maintenance Technicians
- Floor Covering Installers
- Fluid Power Technicians
- Forge Shop Workers
- Furniture Designers
- Furniture Manufacturing Workers
- Futurists
- General Maintenance Mechanics
- Geodetic Surveyors
- Geologists
- Geotechnical Engineers
- Glass Manufacturing Workers
- Glaziers
- Green Builders
- Green Products Manufacturers
- Hardware Engineers
- Heat Treaters
- Heating and Cooling Technicians
- Indoor Environmental Health Specialists
- Industrial Chemicals Workers
- Industrial Designers
- Industrial Ecologists
- Industrial Engineering Technicians
- Industrial Engineers
- Industrial Machinery Mechanics
- Industrial Radiographers
- Industrial Safety and Health Technicians
- Industrial Traffic Managers
- Instrumentation Technicians
- Insulators/Insulation Workers
- Internet of Things Developers
- Job and Die Setters
- Laboratory Testing Technicians
- Landscape Architects
- Laser Technicians
- Lathers
- Layout Workers
- Leather Tanning and Finishing Workers
- Logging Industry Workers
- Logistics Analysts
- Logistics Engineers
- Manufacturing Engineering Technologists
- Manufacturing Engineers
- Manufacturing Production Technicians
- Manufacturing Supervisors
- Marble Setters, Tile Setters, and Terrazzo Workers
- Materials Engineers
- Mechanical Engineering Technicians
- Mechanical Engineers
- Mechatronics Engineers
- Metallurgical Engineers
- Metallurgical Technicians
- Microelectronics Technicians
- Molders
- Non-Destructive Testing Specialists
- Numerical Control Tool Programmers
- Occupational Safety and Health Workers
- Operating Engineers
- Ophthalmic Laboratory Technicians
- Optical Engineers
- Optics Technicians
- Packaging Engineers
- Packaging Machinery Technicians
- Painters and Paperhangers
- Paper Processing Workers
- Pharmaceutical Industry Workers
- Plasterers
- Plastics Engineers
- Plastics Products Manufacturing Workers
- Plastics Technicians
- Plumbers and Pipefitters
- Precision Machinists
- Precision Metalworkers
- Prepress Workers
- Product Designers
- Product Development Directors
- Product Management Directors
- Product Managers
- Quality Control Engineers
- Quality Control Technicians
- Radio Frequency Engineers
- Radio Frequency Identification Device Specialists
- Real Estate Developers
- Remote Health Care Engineers
- Renewable Energy Site Assessors
- Robotics Engineers
- Robotics Integrators
- Robotics Technicians
- Roofers
- Rubber Goods Production Workers
- Sales Managers
- Sales Representatives
- Semiconductor Technicians
- Sheet Metal Workers
- Silverware Artisans and Workers
- Smart Building Systems Designers
- Software Designers
- Software Engineers
- Sporting Goods Production Workers
- Stationary Engineers
- Steel Industry Workers
- Supply Chain Managers
- Surveying and Mapping Technicians
- Surveyors
- Swimming Pool Designers
- Test Drivers
- Textile Manufacturing Workers
- Tobacco Products Industry Workers
- Toy Industry Workers
- Traffic Managers
- Welders and Welding Technicians
- Wood Science and Technology Workers