Employed contingent and noncontingent workers, age 25 to 64 years, percent distribution by educational attainment, February 2005 Percent distribution Education Contingent workers Noncontingent workers Less than a high school diploma 15.5 8.6 High school graduates, no college 24.5 29.7 Some college or associate degree 23.3 28.5 Bachelor's degree and higher 36.6 33.1 Percentages may not sum to 100.0 due to rounding. Data in this chart are based on the broadest estimate of contingency.