In general terms, volunteering is the practice of people willingly agreeing to offer service to a community to meet a particular cause without payment for their time and services.
Volunteering is generally considered an altruistic activity, intended to promote good or improve human quality of life, but people also volunteer for their own skill development, to meet others, to make contacts for possible employment, to have fun, and a variety of other reasons that could be considered self-serving. Volunteering takes many forms and is performed by a wide range of people. Many volunteers are specifically trained in the areas they work in, such as medicine, education, or emergency rescue. Other volunteers serve on an as-needed basis, such as in response to a natural disaster or for a beach-cleanup.