The Beveridge curve-the scatter plot of unemployment rates versus vaca
ncy rates-has recently shifted inward dramatically. While the Beveridg
e curve is often used to summarize the state of the labor market, it i
s not a structural economic relationship. Thus, in order to understand
the labor market implications of recent shifts in the curve, we must
first understand the labor market activities that give rise to the Bev
eridge curve. The article examines the Beveridge curve over the past 3
0 years. The authors discuss some of the issues surrounding the job-ma
tching process and attempt to estimate the extent to which changes in
the job-matching function are responsible for changes in the position
of the Beveridge curve. They also consider other potential sources of
shifts in the Beveridge curve, including shifts in the age and gender
composition of the labor force and changes in the amount of ''churning
'' in the labor market. They find significant increases in matching ef
ficiency, significant drops in labor force growth, and a decrease in l
abor force churning, the sum of which account for the inward shift in
the Beveridge curve since 1987.