61 percent of small business owners said they work six or more days per week.

American small business owners report working more hours, more days and more holidays than their general public counterparts, and during the past year, that gap has widened according to the latest Small Business Watch survey.

While the amount of days and hours on the job for the average American have been relatively flat since 2007, the number of small business owners who work more than 10 hours a day jumped from 30 percent in 2008 to 39 percent in 2009. In comparison, only 20 percent of average workers make the same claim.

When it comes to days worked per week, 61 percent of small business owners said they work six or more, up from 45 percent in 2008 and 43 percent in 2007. Comparatively, only 22 percent of workers in the general population say they work more than five days a week.

"The economy has obviously been a factor for small business owners caught in the slowdown; they're grinding out more hours serving existing customers and likely putting in more time looking for new business," Ryan Scully of Discover. Discover commissions the Small Business Watch Survey.

More Work Survey Results:

- Given their heavy work schedules, small business owners are finding less time for vacation than in years past. Today, only 29 percent say they have taken a vacation in the past year that lasted a week, down from 40 percent in May 2008 and 41 percent in May 2007. Thirty percent say it's been four years or more since they had a vacation that lasted a week, up from 23 percent in both 2008 and 2007.

- 56 percent of small business owners say that the economy has caused them to postpone or cancel vacation time this summer, compared to 45 percent of the general population who said the same.

- 27 percent of small business owners define a day off as not working at all, followed by 37 percent who say a day off means not actively working, but available for calls and e-mails; 25 percent define it as working an hour here and there; 7 percent said it's working all day, but from a remote location; and 3 percent weren't sure how they would define a day off. In the general population, 54 percent of people define a day off as not working at all.

- 57 percent of small business owners say they always or most of the time work on holidays, up from 47 percent in 2008.

- 31 percent of the general public says they always or most of the time work on holidays, up from 29 percent in 2008.

- The spouses of small business owners haven't changed their opinions much since 2007 on whether they approve of checking work e-mail when away: 56 percent approve, 19 percent disapprove and 24 percent aren't sure.

- Spouses in the general public seem to be getting much more used to the idea of checking work e-mail when off: In 2007, only 21 percent of spouses approved of the practice, while 74 percent disapproved and 5 percent weren't sure. This year, 39 percent of spouses approve, 22 percent disapprove and 39 percent aren't sure.