We present and estimate models of an asymmetric relationship between C
RSP stock index returns and the U.S. unemployment rate. Based on the A
kaike Information Criterion, conventional linear time series models ar
e improved by allowing asymmetric responses. Our results show that neg
ative stock returns are quickly followed by sharp increases in unemplo
yment, while more gradual unemployment declines follow positive stock
returns. According to our forecasting model, the unemployment rate ris
es by 1.12 percentage points during the 12 months offer a 10 percent s
tock decline. Because macroeconomic forecasters have been unable to re
liably predict downturns, these findings may provide a useful contribu
tion.