1 A significant participation activity is any trade or business activity in which you participated for more than 100 hours during the year and in which you did not materially participate under any of the material participation tests, other than this test.ou did not materially participate in the activity under test (7) if you participated in the activity for 100 hours or less during the year. Your participation in managing the activity does not count in determining whether you materially participated under this test if: