In a 2003 survey, AARP found that 10% of adults over the age of 45 cited "employer encourages [them]" as a very important motivation for volunteering. (AARP, 2003: 28)
AARP. (2003, October). 2003 Multicultural Study 2003: Time and Money: An In-Depth Look at 45+ Volunteers and Donors. Washington, DC.
AARP's 2003 multicultural project surveyed 2,069 Americans ages 45 and older by phone interview, aiming to "capture the several ways in which different race and ethnic groups give their time and money to the communities around them." (p.49)