Elevated work platforms are lifting and positioning devices with flat surface areas that allow personnel or materials to be lifted to heights that they would not normally be able to reach. Since elevated work platforms are most typically used to elevate personnel, they must be manufactured and operated in a manner that complies with strict regulations as defined by agencies such as the Department of Labor (DOL) and the Occupational Safety and Health Administration (OSHA).

Also known as aerial work platforms, there are a variety of elevated work platform types that suit many different applications. As a result, there is a broad spectrum of industries that utilize elevated work platforms such as: industrial manufacturing, in warehouses for retrieval and storage applications; emergency services, to enable rescuers to reach victims at heights that would otherwise be inaccessible; entertainment, for concerts and other forms of shows to allow the performers to move above the audience; construction, for the building of very tall buildings such as skyscrapers and towers; and power generation, for access to high power lines, which can also be referred to as transmission lines. Capable of both vertical and lateral movement, elevated work platforms are often constructed from materials such as aluminum, steel and stainless steel.
There are three main types of elevated work platforms: aerial devices, scissor lifts and hotel lifts. All of these are most commonly operated using hydraulic power, but at times, electric and pneumatic power may be another option. Aerial devices are almost always operated using hydraulic power as they are the largest type of elevated work platform that is able to move both vertically and laterally. Aerial devices appear very similar in design to an overhead crane, consisting of a number of jointed sections with a base containing a gasoline or diesel powered motor and a flat platform at the top, and are often seen in the construction industry. Scissor lifts are probably the most common type of elevated work platform seen in industrial manufacturing applications, although they are typically only capable of vertical motion. The elevated motion is achieved by this type of elevated work platform due to the crossed pattern of the base; pressure is applied to the outside of the bottom set of supports, elongating the x-like pattern and causing the platform to elevate vertically. Hotel lifts are the least common type of elevated work platform and are much smaller than the other two types, thus they are rarely used in industrial applications. Hotel lift-style elevated work platforms use mechanical devices such as screw threads or rack and pinions in order to extend and elevate. Since they are so limited in capacity, hotel lifts are often used in such tasks as changing a slightly higher than average light bulb.