Who We Are

SMART, the International Association of Sheet Metal, Air, Rail and Transportation Workers, is one of North America’s most dynamic and diverse unions with 203,000 members.

Our members ensure the quality of the air we breathe, promote energy efficiency and produce and provide the vital services that move products to market and passengers to their destinations. We are sheet metal workers, service technicians, bus operators, railroad engineers, conductors, sign workers, welders, production employees and more.

With members in scores of different occupations, we advocate for fairness in the workplace, excellence at work and opportunity for all working families.

See below for a full menu of career paths available to SMART members.

Our Careers

Take a look at some of the job areas SMART is proud to represent!

  • Architectural Sheet Metal
  • Bus Operators & Mechanics
  • CAD, Drafting & Detailing
  • Freight Rail
  • HVAC Installation
  • HVAC Shop/Fabrication
  • Lagging
  • Passenger Rail
  • Production / Manufacturing
  • Rail Mechanical
  • Residential HVAC
  • Service and Refrigeration
  • Roofing
  • Shipyard
  • Sign Fabrication & Installation
  • Indoor Air Quality and Energy Efficiency (TAB)
  • Transit & Commuter Rail
  • Industrial and Shop Welding
  • Yardmaster

Become a SMART Member

Take the next step on your journey towards a rewarding career. Learn how you can become a SMART member.

Member Voices

Hear about the union directly from SMART members themselves.

Buffalo sheet metal worker discusses his “purpose” and pride as a SMART member
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