Generally, the voluntary sector includes self-governing
organizations that do not generate profits for shareholders,
are non-governmental, and are formed with an organizational
structure. Some of these organizations rely on volunteer
action on an ongoing basis, while other organizations are
event driven and rely on volunteers for specific reasons
such as fundraising, festivals, or large sporting events.
Some organizations overlap classifications. For example,
museums educate, promote culture, and preserve our heritage.
For clarity, this website has identified 12 classification
categories that rely on volunteers.