There's something wrong with the US labor market

Something isn't clicking in the US labor market. 
On Tuesday, the latest "Job Openings and Labor Turnover Survey" (JOLTS) showed there were 5.757 million jobs available in the US in March — a near record.
Additionally, the number of unemployed people in the US per job open is down to prerecession levels at about 1.5 workers per job. In 2010, for example, this number was closer to five unemployed workers per job opening.
While the abundance of jobs is often interpreted as a sign of str