Operating Engineers Local Union No. 3 (OE3) is the largest construction trades local in North America, representing over 40,000 members across California, Hawaii, Nevada, and Utah. They advocate for heavy-equipment operators, surveyors, mechanics, inspectors, miners, public employees, and state workers. OE3 provides job security, benefits (retirement and healthcare), and top-notch training facilities, including a heavy equipment operator training school. The union also engages in community involvement and political advocacy.


