A survey done by the US Bureau of Labor Statistics to help measure job vacancies. It collects data from employers about their businesses' employment, job openings, recruitment, hires and separations.
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.
2. The job could start within 30 days, whether or not the establishment finds a suitable candidate during that time.
3. There is active recruiting for workers from outside the establishment location that has the opening.
A reading that is stronger than forecast is generally supportive (bullish) for the USD, while a weaker than forecast reading is generally negative (bearish) for the USD.