The force requirements currently necessary to activate the levers is high enough that the muscles in the employees hand show visible strain during activation. Lengthen and redesign the lever mechanism such that they can be activated with the employees palm rather than their fingers. Use of the palm activation will eliminate the need for forceful finger activations. The use of a remote control with finger activation is appropriate if the controller is to be used as part of a belly controller where it must be small and transportable. Since the current configuration never leaves the cab of the crane longer levers that are hand operated would be appropriate.
Employees maintain static postures for long periods during the day.
The compactness of the cab, location of the seating, and location of the support shelf for the controller force employees to maintain static postures. Assuming static postures for long periods of time reduces circulation to musculoskeletal entities making them more susceptible to fatigue and injury. Educate employees concerning the desirability to alter their body positioning frequently during the day. Employees should be encouraged to frequently readjust their body positioning. Provide a fully adjustable workstation for the employees to work in.