This allows the blood to circulate freely in the legs and feet. Screens which swivel horizontally and tilt or elevate vertically enable the operator to select the optimum viewing angle. It should be large enough for any reference books, files, telephone, or text and also permit different positions of the screen and keyboard. Adjustable surface height is an advantage. The incline of the document holder should be adjustable.
Legibility is a prime consideration in selecting a display screen.
This also applies to document selection. It can be arranged to suit the type of work and the need to consult documents or notes. The type of task performed on a VDT influences the development of fatigue. Therefore, in designing a work station, the type of tasks a worker does should be considered when placing the screen and keyboard. This is one of a series of fact sheets highlighting U.S. Department of Labor programs.