I'm in an area where olives are grown, harvested, cured, processed for market and shipped. I don't of anyone here that requires honey bees for pollination as say almonds. I've kept bees in olive orchards as others do, pollen is spread every where by wind, a light yellow dust. Wind is the primary source of pollination, insects are secondary. It's a last resort for the honey bee and other insects. The trees are planted like a male to female ratio.
http://www.agric.wa.gov.au/PC_91824.html?s=1001