Oddly enough folks,
Over here in NZ, the crazy thing about fork-lifts, is the fact that OSH actually administrates and trains those that operate forklifts.
When I went for my fork-lift licence a few years back there was actually no mention of lifting people up on the forks or any other medium.
You don't even have to hold a current drivers licence here to be able to operate a fork-lift (unless you drive it on a public road).
Personally, as a fork-lift operator, I'd NEVER lift a person up on anything with a fork-lift, the risk is just too great if something goes wrong and as I said above, there are better machines designed for this sole purpose, for things like this.