
Electrical | Electricians
Maintain, repair, alter and install electrical systems and components from low- to high-voltage distribution and end-usage devices.
Electronics | Electronics Mechanics
Perform complex work in the fabrication, modification, maintenance and repair of specialized electronic equipment, including fire alarm systems, security systems and related devices, and participate in electronic design activities and resolve operational problems.
Elevators | Elevator Mechanics
Inspect, repair, maintain, modify and fabricate electrical and electronic circuitry and electrical, electronic, hydraulic and mechanical equipment of passenger and freight elevator systems and power lifts.
HVAC & Refrigeration | HVAC Mechanics, Refrigeration Mechanics
Repair, maintain, alter and install heating, ventilating and air-conditioning (HVAC) systems and mechanically driven refrigeration units and associated controls.
Glass and Glazier | Glaziers
Replace, install, alter repair and maintain all types of glass and glass substitutes.
Keyshop | Locksmiths
Provide combinations and lock and key service involving the repair, installations and maintenance of locking systems
Masonry | Masons
Perform work in the fabrication, maintenance, repair or alteration of brick, tile, stone and prefabricated components.

Mechanical Services | Pipefitters, Welders, Refrigeration Mechanics, Maintenance Mechanics
Maintain and repair absorption systems, steam distribution systems, steam heating systems, water distribution systems and storm and sanitary sewer systems.
Metal Working | Metal workers
Fabricate, install and maintain sheet metal, machined and plastic parts and equipment.
Paint Shop | Painters
Prepare and coat interior and exterior surfaces of buildings, structures, fixtures and furniture and perform a variety of related operations.
Pipefitting | Pipefitters
Layout, fabricate, install, repair and maintain piping fixtures used in the production and distribution of steam or hot water under low or high pressures, back-flow prevention, fire pump maintenance and repair and water treatment.
Plumbing | Plumbers
Assemble, install, repair and perform maintenance to piping, fixtures and equipment used in the distribution, drainage and ventilation of water, water-carried waste, air, gas and other liquids.
Roofing | Roofers
Repair, maintain, alter, replace and install a wide variety of roofing systems.