Came across an interesting thought on whether a user of a fork mounted work platform should use a lanyard and harness.
To quote joseph h of Michigan - "I do not recommend the use of safety harnesses/body belts and lanyards for fall protection on counterbalanced forklift work platforms as they pose a potential forklift stability hazard. The dynamic forces imposed by these devices from deceleration and body pendulum action in a fall from an elevated counterbalanced forklift work platform could result in forklift tip over. "
Certainly something to think about.