The Retired & Senior Volunteer Program (RSVP), one of the largest volunteer efforts in the nation, engages people age 55 and older in diverse range of volunteer activities. Volunteers organize neighborhood watch programs, tutor children, renovate homes, teach English to immigrants, assist victims of natural disasters, and serve their communities in a multitude of other ways. Through RSVP, more than 480,000 volunteers serve a few hours a week to nearly full time at an estimated 65,000 local and national nonprofit groups, places of worship, and government agencies. Volunteers are not paid, but have accident and liability insurance while on duty, sponsoring organizations may reimburse them for some costs incurred during service, such as meals and transportation.