Maintenance managers are responsible for ensuring that facilities, layout, and machinery used to produce new and existing materials and goods run to their maximum efficiency and output.
A bus/truck mechanic helps plan, schedule. and perform repair and preventative maintenance on vehicles such as busses, vans, and trucks, as well as maintain related records.
Maintenance mechanics use lathes, milling machines, and grinders to maintain equipment in a manufacturing setting.
Janitors keep buildings in clean and orderly condition, perform heavy cleaning duties, such as cleaning floors, shampooing rugs, washing walls and glass, and removing rubbish.
A maintenance helper helps mechanics in maintenance, parts replacement, and repair of vehicles, industrial machinery, and electrical and electronic equipment.