A presentation by Thomas Seeley where he outlines a few different communication signals used by the bees to effectively and efficiently distribute the number of bees taking on different tasks in honey making.
Here is a quick overview:
Shake signal - Tells bees in the hive that they need more foragers.
Waggle dance - Informs bee about where to find nectar
Tremble dance - Communicates a need for more bees in the hive to work at collecting and storing the nectar brought in by the foragers.
The beep signal - If bees that are Tremble dancing encounter waggle dancers they may give them the beep signal as a way of letting them know they should stop.