Plant and machine operators and assemblers operate and monitor industrial and agricultural machinery and equipment on the spot or by remote control; drive and operate trains, motor vehicles and mobile machinery and equipment; or assemble products from component parts according to strict specifications and procedures. Competent performance in most occupations in this major group requires skills at the second ISCO skill level.
The work mainly calls for experience with and an understanding of industrial and agricultural machinery and equipment, as well as an ability to cope with machine-paced operations and to adapt to technological innovations. 
Tasks performed by plant and machine operators and assemblers usually  include: operating and monitoring mining or other industrial machinery and equipment for processing metal, minerals, glass, ceramics, wood, paper or  chemicals; operating and monitoring machinery and equipment used to produce articles made of metal,  minerals, chemicals, rubber, plastics, wood, paper, textiles, fur or leather, and which process foodstuffs and related products; driving and operating trains and motor vehicles;  driving, operating and monitoring mobile industrial and agricultural machinery  and equipment; and assembling products from component parts according to strict  specifications and procedures. Supervision of other workers may be included.
Occupations in this major group are classified into the following sub-major groups:

• Stationary Plant and Machine Operators
• Assemblers
• Drivers and Mobile Plant Operators