Question Title Q: When President Obama took office in January 2009, the percentage of part-time workers was 18.6 percent of all employed persons. What was the percentage as of last month? 18.4 percent, slightly below the percentage when Obama took office. 18.7 percent, slightly higher than when Obama took office. 20.1 percent, the highest part-timer ratio since 1968, when BLS began the current series of figures on part-time workers. Next