The last week of October each year is Safety Week in Australia. It exists under different names in each State but everyone coordinates events for the same time each year. Below are some links for further information, some are more developed than others.
In 2009, I was a Safety Ambassador for Safe Work Australia and found that if one was prepared to give, the rewards were ten-fold.
If you are in Australia I strongly recommend attending one of the many free OHS information events. If you are outside Australia, regularly check the Australia OHS regulator websites for some innovative approaches to safety and its promotion.
Australian Capital Territory (yes, the ACT has a month of activities)