An analysis by the Institute for Women’s Policy Research (IWPR) reveals that about 596,800 private sector employees in Oregon lack even a single earned sick day. Access to earned sick days promotes healthy work environments by reducing the spread of illness,1,2 increasing productivity,3 and supporting work and family balance.4 Earned sick days allow people to take time off work to recover from illness and to tend to family members’ health without the fear of lost pay or other negative consequences. This briefing paper presents estimates of lack of earned sick days access rates in Oregon by occupation, by sex, race and ethnicity, personal annual earnings, and work schedule through analysis of government data sources, including the 2010–2011 National Health Interview Survey (NHIS) and the 2009–2011 American Community Survey (ACS).