From the BLS: Job Openings and Labor Turnover Summary

From the BLS: Job Openings and Labor Turnover Summary

There were 3.7 million job openings on the last business day of July, little changed from June, the U.S. Bureau of Labor Statistics reported today.
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The level of total nonfarm job openings in July was up from 2.4 million at the end of the recession in June 2009.
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In July, the quits rate was unchanged for total nonfarm, total private, and government. The number of quits was 2.2 million in July, up from 1.8 million at the end of the recession in June 2009. ... Quits are generally voluntary separations initiated by the employee. Therefore, the quits rate can serve as a measure of workers’ willingness or ability to leave jobs.