According to the article:
The civilian labor force decreased by 37,000 to 155.80 million in July, while those not in the labor force rose by 240,000 to 89.96 million.
The decrease in the percentage of Americans in the labor force–63.4% last month from 63.5% the month before–is one of the main reasons for the drop in the unemployment rate–to 7.4% in July from 7.6% in June.
Many of the jobs added were part time jobs and many jobs changed from full time to part time. ObamaCare has created some serious problems for the American economy (ObamaCare is responsible for the growth of part time jobs) and will continue to do so until it is defunded and stopped. I am not sure if the Republicans in the House of Representatives are going to get anywhere with their attempts at defunding it, but I give them credit for trying.