A 2007 analysis of Census Bureau data shows that "in 2005, 50.1 percent of workers worked for an employer that did not offer health benefits to any workers. Nearly 18 percent worked for an employer that provided benefits, but were not eligible for them; and nearly one-third were offered benefits but chose not to participate." (p. 1)
Data for this study come from a series of supplements to the Current Population Survey (CPS) conducted by the Census Bureau. The CPS is a nationally representative survey of the civilian noninstitutionalized U.S. population. It is the primary source of data on labor force characteristics of the U.S. civilian noninstitutionalized population. The data in this report are limited to wage and salary workers ages 18-64. Self-employed workers are not included in the analysis.