|Work site||Average days/week||Percent working||95% CI for percent working|
|2006 Omnibus Household Survey|
|Paid work||4.7 days||57.9||3.5% n=1,092|
|Volunteer work||2.4 days||19.5||4.1% n=504|
|2007 Omnibus Household Survey|
|Paid work||4.8 days||57.7||3.5% n=1,015|
|Volunteer work||2.1 days||16.6||3.7% n=488|
KEY: CI = Confidence interval.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Omnibus Household Surveys, November 2006 and 2007.