It comes from surveys based on this criteria: > JOLTS defines Job Openings as all positions that are open (not filled) on the last business day of the month. A

It comes from surveys based on this criteria: > JOLTS defines Job Openings as all positions that are open (not filled) on the last business day of the month. A job is "open" only if it meets all three of the following conditions: 1. A specific position exists and there is work available for that position. The position can be full-time or part-time, and it can be permanent, short-term, or seasonal, and 2. The job could start within 30 days, whether or not the establishment finds a suitable candidate during that time, and 3. There is active recruiting for workers from outside the establishment location that has the opening.