OSHA mandates the use of a full-body harness with a shock-absorbing lanyard or retractable lifeline as part of the complete PFAS. A full-body harness, for instance, distributes the forces throughout the body, and a shock-absorbing lanyard decreases the total fall arresting forces. A lanyard is literally defined as a flexible line securing a full-body harness to an anchorage point. Energy absorbing lanyards reduce the energy transmitted to the user’s body in the event of a fall. Shock absorbing lanyards also provide deceleration distance during a fall. This reduces the fall-arresting forces on the worker by approximately 60-80 percent below the threshold of injury, as specified by OSHA and ANSI.