This is a group organised for voluntary manual labor. Tasks like cleaning, painting, garden work. A working bee servers the common good. Weather at painting the fence at Grandma's house or weeding and planting flowers at your local park. A working bee is organised to get a laborious task done with the help of a group of friends, family, colleagues or community.
Example:

Hey Jane, a group of us are going to have a working-bee this weekend at Greg's place. Since he's been confined to the wheelchair hus gardens gotten totally out of hand and it doesn't look good for the street. Sally and I are gonna be there and Jeff's gonna bring his famous chocolate mousse to the bbq afterwards. I know how much you like Sally. How about you come and give us a hand, it'll be fun you can meet some of the neighbours on our street.
by Isaac Tanner-Dempsey March 26, 2021
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The illusion of work conducted by a crew under the influence of a captain in an alcoholic state.
A working bee must be completed prior to summer shenanigans aboard the captains boat
by Captain My Captain... October 13, 2014
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