AbstractThe picture of U.S. labor market dynamics is opaque. This paper aims at its clarification by (i) listing data facts that can be agreed upon; these indicate that there is considerable cyclicality and volatility of both accessions to and separations from employment and hence both are important for the understanding of the business cycle; (ii) presenting the business‐cycle facts of key series; (iii) pointing to specific gaps in the data picture, showing that the definite characterization of labor market dynamics depends upon the closing of these data gaps.